Sanyo C2472 User Manual

TECHNICAL & SERVICE MANUAL  
KS1872 + C1872  
+ CL1872  
FILE NO.  
KS2472 + C2472  
+ CL2472  
Destination: North America  
DC INVERTER SPLIT SYSTEM AIR CONDITIONER  
Indoor Model No. Product Code No.  
Outdoor Model No. Product Code No.  
KS1872  
KS2472  
1 852 099 83  
1 852 099 84  
C1872  
C2472  
1 852 330 36  
1 852 330 37  
1 852 330 40  
1 852 330 41  
CL1872  
CL2472  
Indoor Unit  
Outdoor Unit  
AIR CO  
NDITIONER  
KS1872  
KS2472  
C1872  
CL1872  
IMPORTANT  
These air conditioners employ new  
refrigerant R410A.  
Pay special attention when  
servicing the unit.  
C2472  
CL2472  
REFERENCE NO. SM700663  
Table of Contents  
Page  
5
1. OPERATING RANGE ...................................................................................................................  
2. SPECIFICATIONS  
2-1. Unit Specifications .............................................................................................................  
6
2-2. Major Component Specifications ....................................................................................... 14  
2-3. Other Component Specifications ....................................................................................... 20  
3. DIMENSIONAL DATA ..................................................................................................................... 21  
4. REFRIGERANT FLOW DIAGRAM  
4-1. Refrigerant Flow Diagram ................................................................................................... 24  
5. PERFORMANCE DATA  
5-1. Temperature Charts ............................................................................................................ 25  
5-2. Air Throw Distance Charts ................................................................................................. 29  
6. ELECTRICAL DATA  
6-1. Electrical Characteristics .................................................................................................... 31  
6-2. Electric Wiring Diagrams .................................................................................................... 33  
7. INSTALLATION INSTRUCTIONS  
7-1. Installation Site Selection ................................................................................................... 37  
7-2. Recommended Wire Length and Diameter ........................................................................ 39  
7-3. Remote Control Unit Installation Position ........................................................................... 40  
7-4. How to Test Run the Air Conditioner ................................................................................... 41  
7-5. Remove the Grille to Install the Indoor Unit ........................................................................ 42  
8. MAINTENANCE  
8-1. Address Setting of the Remote Control Unit ....................................................................... 43  
8-2. Disconnecting and Connecting Positive Connector for Outdoor Unit .................................. 44  
9. FUNCTIONS  
9-1. Operation Functions ........................................................................................................... 45  
9-2. Protective Functions ........................................................................................................... 47  
3
Page  
10.TROUBLESHOOTING  
10-1. Precautions before Performing Inspection or Repair ........................................................... 48  
10-2. Method of Self-Diagnostics ................................................................................................. 48  
10-3. Checking the Indoor and Outdoor Units .............................................................................. 51  
10-4. Trouble Diagnosis of Fan Motor .......................................................................................... 52  
10-5. Noise Malfunction and Electromagnetic Interference .......................................................... 54  
11. CHECKING ELECTRICAL COMPONENTS  
11-1. Measurement of Insulation Resistance ............................................................................... 55  
11-2. Checking Continuity of Fuse on PCB Ass'y ......................................................................... 56  
12. REFRIGERANT R410A:  
SPECIAL PRECAUTIONS WHEN SERVICING UNIT  
12-1. Characteristics of New Refrigerant R410A ......................................................................... 57  
12-2. Checklist before Servicing ................................................................................................... 58  
12-3. Tools Specifically for R410A ................................................................................................ 59  
12-4. Tubing Installation Procedures ............................................................................................ 59  
12-5. In Case of Compressor Malfunction .................................................................................... 60  
12-6. In Case Refrigerant is Leaking ............................................................................................ 62  
12-7. Charging Additional Refrigerant .......................................................................................... 63  
12-8. Retro-Fitting Existing Systems ............................................................................................ 63  
APPENDIX INSTRUCTION MANUAL ............................................................................................ 64  
4
1. OPERATING RANGE  
Models : KS1872 + C1872  
KS2472 + C2472  
Temperature  
Indoor Air Intake Temp.  
95 °F D.B. / 71 °F W.B.  
67 °F D.B. / 57 °F W.B.  
Outdoor Air Intake Temp.  
115 °F D.B.  
Maximum  
Cooling  
Minimum  
67 °F D.B.  
Models : KS1872 + CL1872  
KS2472 + CL2472  
Temperature  
Indoor Air Intake Temp.  
95 °F D.B. / 71 °F W.B.  
67 °F D.B. / 57 °F W.B.  
Outdoor Air Intake Temp.  
115 °F D.B.  
Maximum  
Cooling  
Minimum  
0 °F D.B.  
5
2. SPECIFICATIONS  
2-1. Unit Specifications  
Indoor Unit  
KS1872  
Outdoor Unit C1872  
<
230V  
>
Voltage Rating  
230V Single-Phase 60Hz  
Performance  
Cooling  
17,600 ( 4,100 to 17,700 )  
5.15 ( 1.2 to 5.2 )  
524 (890)  
Capacity  
BTU/h  
kW  
ft3/min (m3/h)  
Pints/h  
Air Circulation (High)  
Moisture Removal (High)  
4.89  
Electrical Rating  
Cooling  
Available Voltage Range  
Running Amperes  
V
A
187 to 253  
7.0 ( 1.2 to 7.0 )  
Power Input  
W
1,500 ( 250 to 1,500 )  
Power Factor  
SEER  
%
BTU/W  
93  
16  
Compressor Locked Rotor Amperes  
Fuse or Circuit Breaker Capacity  
A
A
17.5  
20  
Features  
Controls / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
Timer  
24-Hour ON or OFF Timer, 1-Hour OFF Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor / Outdoor  
Horizontal  
Auto and 3 steps / Auto (Hi,Me,Lo)  
Manual  
Vertical  
Auto  
Air Filter  
Compressor  
Refrigerant / Amount charged at shipment  
Refrigerant Control  
Operation Sound  
Washable, Anti-Mold  
DC Twin Rotary (Inverter)  
R410A / 2.87 (1.3)  
Electric Expansion Valve  
42 / 38 / 30 / 28  
51  
lb. (kg)  
Indoor : Hi/Me/Lo/Qt*  
Outdoor : Hi  
dB-A  
dB-A  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Flare Type  
Max. allowable tubing length at shipment  
ft. (m)  
inch (mm)  
inch (mm)  
25 (7.5)  
1/4 (6.35)  
1/2 (12.7)  
Refrigerant  
Narrow tube  
Wide tube  
Tube Diameter  
Refrigerant Tube Kit / Accessories  
Optional / Air Clean Filter  
Dimensions & Weight  
Indoor Unit  
11-23/32 (298)  
41-15/16 (1,065)  
8-19/32 (218)  
11-3/8 (289)  
44-7/8 (1,140)  
14-29/32 (379)  
26.5 (12.0)  
Outdoor Unit  
26-3/8 (670)  
34-21/32 (880)  
11-7/32 (285)  
29-1/8 (740)  
39-27/32 (1,012)  
14-31/32 (380)  
90.4 (41.0)  
Unit Dimensions  
Height  
Width  
Depth  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
lb. (kg)  
Package Dimensions Height  
Width  
Depth  
Net  
Weight  
Shipping  
lb. (kg)  
cu.ft (m3)  
33.1 (15.0)  
4.24 (0.12)  
99.2 (45.0)  
9.89 (0.28)  
Shipping Volume  
DATA SUBJECT TO CHANGE WITHOUT NOTICE.  
Remarks: Rating conditions are:  
Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.  
Outdoor air temperature 95°F D.B. / 75°F W.B.  
6
Indoor Unit  
KS1872  
Outdoor Unit C1872  
<
208V  
>
Voltage Rating  
208V Single-Phase 60Hz  
Performance  
Cooling  
17,600 ( 4,100 to 17,700 )  
5.15 ( 1.2 to 5.2 )  
524 (890)  
Capacity  
BTU/h  
kW  
ft3/min (m3/h)  
Pints/h  
Air Circulation (High)  
Moisture Removal (High)  
4.89  
Electrical Rating  
Cooling  
Available Voltage Range  
Running Amperes  
V
A
187 to 253  
7.7 ( 1.2 to 7.7 )  
Power Input  
W
1,500 ( 250 to 1,500 )  
Power Factor  
SEER  
%
BTU/W  
94  
16  
Compressor Locked Rotor Amperes  
Fuse or Circuit Breaker Capacity  
A
A
17.5  
20  
Features  
Controls / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
Timer  
24-Hour ON or OFF Timer, 1-Hour OFF Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor / Outdoor  
Horizontal  
Auto and 3 steps / Auto (Hi,Me,Lo)  
Manual  
Vertical  
Auto  
Air Filter  
Compressor  
Refrigerant / Amount charged at shipment  
Refrigerant Control  
Operation Sound  
Washable, Anti-Mold  
DC Rotary (Inverter)  
R410A / 2.87 (1.3)  
Electric Expansion Valve  
42 / 38 / 30 / 28  
51  
lb. (kg)  
Indoor : Hi/Me/Lo/Qt*  
Outdoor : Hi  
dB-A  
dB-A  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Flare Type  
Max. allowable tubing length at shipment  
ft. (m)  
inch (mm)  
inch (mm)  
25 (7.5)  
1/4 (6.35)  
1/2 (12.7)  
Refrigerant  
Narrow tube  
Wide tube  
Tube Diameter  
Refrigerant Tube Kit / Accessories  
Optional / Air Clean Filter  
Dimensions & Weight  
Indoor Unit  
11-23/32 (298)  
41-15/16 (1,065)  
8-19/32 (218)  
11-3/8 (289)  
44-7/8 (1,140)  
14-29/32 (379)  
26.5 (12.0)  
Outdoor Unit  
26-3/8 (670)  
34-21/32 (880)  
11-7/32 (285)  
29-1/8 (740)  
39-27/32 (1,012)  
14-31/32 (380)  
90.4 (41.0)  
Unit Dimensions  
Height  
Width  
Depth  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
lb. (kg)  
Package Dimensions Height  
Width  
Depth  
Net  
Weight  
Shipping  
lb. (kg)  
cu.ft (m3)  
33.1 (15.0)  
4.24 (0.12)  
99.2 (45.0)  
9.89 (0.28)  
Shipping Volume  
DATA SUBJECT TO CHANGE WITHOUT NOTICE.  
Remarks: Rating conditions are:  
Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.  
Outdoor air temperature 95°F D.B. / 75°F W.B.  
7
Indoor Unit  
KS2472  
Outdoor Unit C2472  
<
230V  
>
Voltage Rating  
230V Single-Phase 60Hz  
Performance  
Cooling  
24,200 ( 4,100 to 24,200 )  
7.1 ( 1.2 to 7.1 )  
600 (1,020)  
Capacity  
BTU/h  
kW  
ft3/min (m3/h)  
Pints/h  
Air Circulation (High)  
Moisture Removal (High)  
4.89  
Electrical Rating  
Cooling  
Available Voltage Range  
Running Amperes  
V
A
187 to 253  
10.8 ( 1.3 to 10.8 )  
Power Input  
W
2,355 ( 280 to 2,355 )  
Power Factor  
SEER  
%
BTU/W  
95  
16  
Compressor Locked Rotor Amperes  
Fuse or Circuit Breaker Capacity  
A
A
17.5  
20  
Features  
Controls / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
Timer  
24-Hour ON or OFF Timer, 1-Hour OFF Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor / Outdoor  
Horizontal  
Auto and 3 steps / Auto (Hi,Me,Lo)  
Manual  
Vertical  
Auto  
Air Filter  
Compressor  
Refrigerant / Amount charged at shipment  
Refrigerant Control  
Operation Sound  
Washable, Anti-Mold  
DC Twin Rotary (Inverter)  
R410A / 4.30 (1.95)  
Electric Expansion Valve  
47 / 44 / 41 / 30  
55  
lb. (kg)  
Indoor : Hi/Me/Lo/Qt*  
Outdoor : Hi  
dB-A  
dB-A  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Flare Type  
Max. allowable tubing length at shipment  
ft. (m)  
inch (mm)  
inch (mm)  
33 (10)  
1/4 (6.35)  
5/8 (15.88)  
Refrigerant  
Narrow tube  
Wide tube  
Tube Diameter  
Refrigerant Tube Kit / Accessories  
Optional / Air Clean Filter  
Dimensions & Weight  
Indoor Unit  
11-23/32 (298)  
41-15/16 (1,065)  
8-19/32 (218)  
11-3/8 (289)  
44-7/8 (1,140)  
14-29/32 (379)  
26.5 (12.0)  
Outdoor Unit  
29-1/8 (740)  
35-7/16 (900)  
12-19/32 (320)  
33-27/32 (860)  
40-5/8 (1,032)  
16-1/4 (413)  
119.0 (54.0)  
Unit Dimensions  
Height  
Width  
Depth  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
lb. (kg)  
Package Dimensions Height  
Width  
Depth  
Net  
Weight  
Shipping  
lb. (kg)  
cu.ft (m3)  
33.1 (15.0)  
4.24 (0.12)  
127.9 (58.0)  
12.71 (0.36)  
Shipping Volume  
DATA SUBJECT TO CHANGE WITHOUT NOTICE.  
Remarks: Rating conditions are:  
Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.  
Outdoor air temperature 95°F D.B. / 75°F W.B.  
8
Indoor Unit  
KS2472  
Outdoor Unit C2472  
<
208V  
>
Voltage Rating  
208V Single-Phase 60Hz  
Performance  
Cooling  
24,200 ( 4,100 to 24,200 )  
7.1 ( 1.2 to 7.1 )  
600 (1,020)  
Capacity  
BTU/h  
kW  
ft3/min (m3/h)  
Pints/h  
Air Circulation (High)  
Moisture Removal (High)  
4.89  
Electrical Rating  
Cooling  
Available Voltage Range  
Running Amperes  
V
A
187 to 253  
12.1 ( 1.3 to 12.1 )  
Power Input  
W
2,355 ( 280 to 2,350 )  
Power Factor  
SEER  
%
BTU/W  
94  
16  
Compressor Locked Rotor Amperes  
Fuse or Circuit Breaker Capacity  
A
A
17.5  
20  
Features  
Controls / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
Timer  
24-Hour ON or OFF Timer, 1-Hour OFF Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor / Outdoor  
Horizontal  
Auto and 3 steps / Auto (Hi,Me,Lo)  
Manual  
Vertical  
Auto  
Air Filter  
Compressor  
Refrigerant / Amount charged at shipment  
Refrigerant Control  
Operation Sound  
Washable, Anti-Mold  
DC Twin Rotary (Inverter)  
R410A / 4.30 (1.95)  
Electric Expansion Valve  
47 / 44 / 41 / 30  
55  
lb. (kg)  
Indoor : Hi/Me/Lo/Qt*  
Outdoor : Hi  
dB-A  
dB-A  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Flare Type  
Max. allowable tubing length at shipment  
ft. (m)  
inch (mm)  
inch (mm)  
33 (10)  
1/4 (6.35)  
5/8 (15.88)  
Refrigerant  
Narrow tube  
Wide tube  
Tube Diameter  
Refrigerant Tube Kit / Accessories  
Optional / Air Clean Filter  
Dimensions & Weight  
Indoor Unit  
11-23/32 (298)  
41-15/16 (1,065)  
8-19/32 (218)  
11-3/8 (289)  
44-7/8 (1,140)  
14-29/32 (379)  
26.5 (12.0)  
Outdoor Unit  
29-1/8 (740)  
35-7/16 (900)  
12-19/32 (320)  
33-27/32 (860)  
40-5/8 (1,032)  
16-1/4 (413)  
119.0 (54.0)  
Unit Dimensions  
Height  
Width  
Depth  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
lb. (kg)  
Package Dimensions Height  
Width  
Depth  
Net  
Weight  
Shipping  
lb. (kg)  
cu.ft (m3)  
33.1 (15.0)  
4.24 (0.12)  
127.9 (58.0)  
12.71 (0.36)  
Shipping Volume  
DATA SUBJECT TO CHANGE WITHOUT NOTICE.  
Remarks: Rating conditions are:  
Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.  
Outdoor air temperature 95°F D.B. / 75°F W.B.  
9
Indoor Unit  
KS1872  
Outdoor Unit CL1872  
<
230V  
>
Voltage Rating  
230V Single-Phase 60Hz  
Performance  
Cooling  
17,600 ( 4,100 to 17,700 )  
5.15 ( 1.2 to 5.2 )  
524 (890)  
Capacity  
BTU/h  
kW  
ft3/min (m3/h)  
Pints/h  
Air Circulation (High)  
Moisture Removal (High)  
4.89  
Electrical Rating  
Cooling  
Available Voltage Range  
Running Amperes  
V
A
187 to 253  
7.0 ( 1.2 to 7.0 )  
Power Input  
W
1,500 ( 250 to 1,500 )  
Power Factor  
SEER  
%
BTU/W  
93  
16  
Compressor Locked Rotor Amperes  
Fuse or Circuit Breaker Capacity  
A
A
17.5  
20  
Features  
Controls / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
Timer  
24-Hour ON or OFF Timer, 1-Hour OFF Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor / Outdoor  
Horizontal  
Auto and 3 steps / Auto (Hi and multi steps)  
Manual  
Auto  
Vertical  
Air Filter  
Compressor  
Refrigerant / Amount charged at shipment  
Refrigerant Control  
Operation Sound  
Washable, Anti-Mold  
DC Twin Rotary (Inverter)  
R410A / 2.87 (1.3)  
Electric Expansion Valve  
42 / 38 / 30 / 28  
51  
lb. (kg)  
Indoor : Hi/Me/Lo/Qt*  
Outdoor : Hi  
dB-A  
dB-A  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Flare Type  
Max. allowable tubing length at shipment  
ft. (m)  
inch (mm)  
inch (mm)  
33 (10)  
1/4 (6.35)  
1/2 (12.7)  
Refrigerant  
Narrow tube  
Wide tube  
Tube Diameter  
Refrigerant Tube Kit / Accessories  
Optional / Air Clean Filter  
Dimensions & Weight  
Indoor Unit  
11-23/32 (298)  
41-15/16 (1,065)  
8-19/32 (218)  
11-3/8 (289)  
44-7/8 (1,140)  
14-29/32 (379)  
26.5 (12.0)  
Outdoor Unit  
26-3/8 (670)  
34-21/32 (880)  
11-7/32 (285)  
29-1/8 (740)  
39-27/32 (1,012)  
14-31/32 (380)  
90.4 (41.0)  
Unit Dimensions  
Height  
Width  
Depth  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
lb. (kg)  
Package Dimensions Height  
Width  
Depth  
Net  
Weight  
Shipping  
lb. (kg)  
cu.ft (m3)  
33.1 (15.0)  
4.24 (0.12)  
99.2 (45.0)  
9.89 (0.28)  
Shipping Volume  
DATA SUBJECT TO CHANGE WITHOUT NOTICE.  
Remarks: Rating conditions are:  
Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.  
Outdoor air temperature 95°F D.B. / 75°F W.B.  
10  
Indoor Unit  
KS1872  
Outdoor Unit CL1872  
<
208V  
>
Voltage Rating  
208V Single-Phase 60Hz  
Performance  
Cooling  
17,600 ( 4,100 to 17,700 )  
5.15 ( 1.2 to 5.2 )  
524 (890)  
Capacity  
BTU/h  
kW  
ft3/min (m3/h)  
Pints/h  
Air Circulation (High)  
Moisture Removal (High)  
4.89  
Electrical Rating  
Cooling  
Available Voltage Range  
Running Amperes  
V
A
187 to 253  
7.7 ( 1.2 to 7.7 )  
Power Input  
W
1,500 ( 250 to 1,500 )  
Power Factor  
SEER  
%
BTU/W  
94  
16  
Compressor Locked Rotor Amperes  
Fuse or Circuit Breaker Capacity  
A
A
17.5  
20  
Features  
Controls / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
Timer  
24-Hour ON or OFF Timer, 1-Hour OFF Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor / Outdoor  
Horizontal  
Auto and 3 steps / Auto (Hi and multi steps)  
Manual  
Auto  
Vertical  
Air Filter  
Compressor  
Refrigerant / Amount charged at shipment  
Refrigerant Control  
Operation Sound  
Washable, Anti-Mold  
DC Twin Rotary (Inverter)  
R410A / 2.87 (1.3)  
Electric Expansion Valve  
42 / 38 / 30 / 28  
51  
lb. (kg)  
Indoor : Hi/Me/Lo/Qt*  
Outdoor : Hi  
dB-A  
dB-A  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Flare Type  
Max. allowable tubing length at shipment  
ft. (m)  
inch (mm)  
inch (mm)  
33 (10)  
1/4 (6.35)  
1/2 (12.7)  
Refrigerant  
Narrow tube  
Wide tube  
Tube Diameter  
Refrigerant Tube Kit / Accessories  
Optional / Air Clean Filter  
Dimensions & Weight  
Indoor Unit  
11-23/32 (298)  
41-15/16 (1,065)  
8-19/32 (218)  
11-3/8 (289)  
44-7/8 (1,140)  
14-29/32 (379)  
26.5 (12.0)  
Outdoor Unit  
26-3/8 (670)  
34-21/32 (880)  
11-7/32 (285)  
29-1/8 (740)  
39-27/32 (1,012)  
14-31/32 (380)  
90.4 (41.0)  
Unit Dimensions  
Height  
Width  
Depth  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
lb. (kg)  
Package Dimensions Height  
Width  
Depth  
Net  
Weight  
Shipping  
lb. (kg)  
cu.ft (m3)  
33.1 (15.0)  
4.24 (0.12)  
99.2 (45.0)  
9.89 (0.28)  
Shipping Volume  
DATA SUBJECT TO CHANGE WITHOUT NOTICE.  
Remarks: Rating conditions are:  
Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.  
Outdoor air temperature 95°F D.B. / 75°F W.B.  
11  
Indoor Unit  
KS2472  
Outdoor Unit CL2472  
<
230V  
>
Voltage Rating  
230V Single-Phase 60Hz  
Performance  
Cooling  
24,200 ( 4,100 to 24,200 )  
7.1 ( 1.2 to 7.1 )  
600 (1,020)  
Capacity  
BTU/h  
kW  
ft3/min (m3/h)  
Pints/h  
Air Circulation (High)  
Moisture Removal (High)  
4.89  
Electrical Rating  
Cooling  
Available Voltage Range  
Running Amperes  
V
A
187 to 253  
10.8 ( 1.3 to 10.8 )  
Power Input  
W
2,355 ( 280 to 2,355 )  
Power Factor  
SEER  
%
BTU/W  
95  
16  
Compressor Locked Rotor Amperes  
Fuse or Circuit Breaker Capacity  
A
A
17.5  
20  
Features  
Controls / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
Timer  
24-Hour ON or OFF Timer, 1-Hour OFF Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor / Outdoor  
Horizontal  
Auto and 3 steps / Auto (Hi and multi steps)  
Manual  
Auto  
Vertical  
Air Filter  
Compressor  
Refrigerant / Amount charged at shipment  
Refrigerant Control  
Operation Sound  
Washable, Anti-Mold  
DC Twin Rotary (Inverter)  
R410A / 4.30 (1.95)  
Electric Expansion Valve  
47 / 44 / 41 / 30  
55  
lb. (kg)  
Indoor : Hi/Me/Lo/Qt*  
Outdoor : Hi  
dB-A  
dB-A  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Flare Type  
Max. allowable tubing length at shipment  
ft. (m)  
inch (mm)  
inch (mm)  
33 (10)  
1/4 (6.35)  
5/8 (15.88)  
Refrigerant  
Narrow tube  
Wide tube  
Tube Diameter  
Refrigerant Tube Kit / Accessories  
Optional / Air Clean Filter  
Dimensions & Weight  
Indoor Unit  
11-23/32 (298)  
41-15/16 (1,065)  
8-19/32 (218)  
11-3/8 (289)  
44-7/8 (1,140)  
14-29/32 (379)  
26.5 (12.0)  
Outdoor Unit  
29-1/8 (740)  
35-7/16 (900)  
12-19/32 (320)  
33-27/32 (860)  
40-5/8 (1,032)  
16-1/4 (413)  
119.0 (54.0)  
Unit Dimensions  
Height  
Width  
Depth  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
lb. (kg)  
Package Dimensions Height  
Width  
Depth  
Net  
Weight  
Shipping  
lb. (kg)  
cu.ft (m3)  
33.1 (15.0)  
4.24 (0.12)  
127.9 (58.0)  
12.71 (0.36)  
Shipping Volume  
DATA SUBJECT TO CHANGE WITHOUT NOTICE.  
Remarks: Rating conditions are:  
Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.  
Outdoor air temperature 95°F D.B. / 75°F W.B.  
12  
Indoor Unit  
KS2472  
Outdoor Unit CL2472  
<
208V  
>
Voltage Rating  
208V Single-Phase 60Hz  
Performance  
Cooling  
24,200 ( 4,100 to 24,200 )  
7.1 ( 1.2 to 7.1 )  
600 (1,020)  
Capacity  
BTU/h  
kW  
ft3/min (m3/h)  
Pints/h  
Air Circulation (High)  
Moisture Removal (High)  
4.89  
Electrical Rating  
Cooling  
Available Voltage Range  
Running Amperes  
V
A
187 to 253  
12.1 ( 1.3 to 12.1 )  
Power Input  
W
2,355 ( 280 to 2,355 )  
Power Factor  
SEER  
%
BTU/W  
94  
16  
Compressor Locked Rotor Amperes  
Fuse or Circuit Breaker Capacity  
A
A
17.5  
20  
Features  
Controls / Temperature Control  
Control Unit  
Microprocessor / I.C. Thermister  
Wireless Remote Control Unit  
Timer  
24-Hour ON or OFF Timer, 1-Hour OFF Timer  
Fan Speeds  
Airflow Direction (Indoor)  
Indoor / Outdoor  
Horizontal  
Auto and 3 steps / Auto (Hi and multi steps)  
Manual  
Auto  
Vertical  
Air Filter  
Compressor  
Refrigerant / Amount charged at shipment  
Refrigerant Control  
Operation Sound  
Washable, Anti-Mold  
DC Twin Rotary (Inverter)  
R410A / 4.30 (1.95)  
Electric Expansion Valve  
47 / 44 / 41 / 30  
55  
lb. (kg)  
Indoor : Hi/Me/Lo/Qt*  
Outdoor : Hi  
dB-A  
dB-A  
(*Qt = Quiet mode)  
Refrigerant Tubing Connections  
Flare Type  
Max. allowable tubing length at shipment  
ft. (m)  
inch (mm)  
inch (mm)  
33 (10)  
1/4 (6.35)  
5/8 (15.88)  
Refrigerant  
Narrow tube  
Wide tube  
Tube Diameter  
Refrigerant Tube Kit / Accessories  
Optional / Air Clean Filter  
Dimensions & Weight  
Indoor Unit  
11-23/32 (298)  
41-15/16 (1,065)  
8-19/32 (218)  
11-3/8 (289)  
44-7/8 (1,140)  
14-29/32 (379)  
26.5 (12.0)  
Outdoor Unit  
29-1/8 (740)  
35-7/16 (900)  
12-19/32 (320)  
33-27/32 (860)  
40-5/8 (1,032)  
16-1/4 (413)  
119.0 (54.0)  
Unit Dimensions  
Height  
Width  
Depth  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
inch (mm)  
lb. (kg)  
Package Dimensions Height  
Width  
Depth  
Net  
Weight  
Shipping  
lb. (kg)  
cu.ft (m3)  
33.1 (15.0)  
4.24 (0.12)  
127.9 (58.0)  
12.71 (0.36)  
Shipping Volume  
DATA SUBJECT TO CHANGE WITHOUT NOTICE.  
Remarks: Rating conditions are:  
Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.  
Outdoor air temperature 95°F D.B. / 75°F W.B.  
13  
2-2. Major Component Specifications  
2-2-1. Indoor Unit  
Indoor Unit  
KS1872  
Control PCB  
Part No.  
CB-KS1872  
Microprocessor  
250V 3A  
Controls  
Control Circuit Fuse  
Remote Control Unit  
RCS-4VPIS4U  
Fan  
Type  
Cross-Flow  
Q'ty ... Dia. and Length  
inch (mm)  
1 ... D3-11/16 / L33-9/32 (D94/L845)  
Fan Motor  
Type  
DC Motor  
Model ... Q'ty  
No. of Poles  
SIC-39CVL-D847-2-A ... 1  
8
1,250  
30  
Rough Measure RPM (Cool)  
Nominal Output  
Coil Resistance  
W
Ohm  
-
(Ambient Temp. 68 F (20 oC))  
o
Safety Device  
Type  
Internal Controller  
Over-Current Protection  
Over-Heat Protection  
Run Capacitor  
Yes  
Yes  
-
-
Micro F  
VAC  
Flap Motor  
Type  
Stepping Motor  
MP24Z3  
Model  
Rating  
DC 12V  
Coil Resistance  
Ohm  
Each Pair of Terminal : 400 +/- 7%  
o
(Ambient Temp. 77 F (25 oC ))  
Heat Exchanger Coil  
Coil  
Aluminum Plate Fin / Copper Tube  
Rows  
2
Fins per inch  
Face Area  
19.5  
3.07 (0.285)  
ft2 (m2)  
DATA SUBJECT TO CHANGE WITHOUT NOTICE.  
14  
Indoor Unit  
KS2472  
Control PCB  
Part No.  
CB-KS2472  
Microprocessor  
250V 3A  
Controls  
Control Circuit Fuse  
Remote Control Unit  
RCS-4VPIS4U  
Fan  
Type  
Cross-Flow  
Q'ty ... Dia. and Length  
inch (mm)  
1 ... D3-11/16 / L33-9/32 (D94/L845)  
Fan Motor  
Type  
DC Motor  
Model ... Q'ty  
No. of Poles  
SIC-39CVL-D847-2-A ... 1  
8
1,500  
30  
Rough Measure RPM (Cool)  
Nominal Output  
Coil Resistance  
W
Ohm  
-
(Ambient Temp. 68 F (20 oC))  
o
Safety Device  
Type  
Internal Controller  
Over-Current Protection  
Over-Heat Protection  
Run Capacitor  
Yes  
Yes  
-
-
Micro F  
VAC  
Flap Motor  
Type  
Stepping Motor  
MP24Z3  
Model  
Rating  
DC 12V  
Coil Resistance  
Ohm  
Each Pair of Terminal : 400 +/- 7%  
o
(Ambient Temp. 77 F (25 oC ))  
Heat Exchanger Coil  
Coil  
Aluminum Plate Fin / Copper Tube  
Rows  
2
Fins per inch  
Face Area  
19.5  
3.07 (0.285)  
ft2 (m2)  
DATA SUBJECT TO CHANGE WITHOUT NOTICE.  
15  
2-2-2. Outdoor Unit  
Outdoor Unit C1872  
Control PCB  
Part No.  
CB-C1872  
Microprocessor  
250V 25A  
Controls  
Control Circuit Fuse  
Compressor  
Type  
DC Twin Rotary (Hermetic)  
C-6RVN93H0M / 1,050W  
FV50S ... 0.74 (350)  
R - S : 0.482  
Compressor Model / Nominal Output  
Compressor Oil ... Amount  
Coil Resistance (Ambient Temp. 68 F (20 oC))  
Pints (cc)  
Ohm  
o
S - T : 0.482  
T - R : 0.482  
Safety Device  
CT (Peak current cut-off control)  
Compressor Discharge Temp. Control  
Operation cut-off control in abnormal ambient Temp.  
Yes  
Yes  
Yes  
Overload Relay  
Model  
Operation Temp.  
Micro F  
CS-7L115  
o
Open : 239 oF(115 oC), Close : 203 F(95 oC)  
Run Capacitor  
-
-
-
VAC  
Crankcase Heater  
Fan  
Type  
Propeller  
Q'ty ... Dia.  
inch (mm)  
1 ... D16 -17/32 (D420)  
Fan Motor  
Type  
DC Motor  
Model ... Q'ty  
DAJ12-55J71A-CU ... 1  
No. of Poles  
Rough Measure RPM (Cool)  
Nominal Output  
8
820  
50  
W
Coil Resistance  
Ohm  
RED - WHT : 77.5  
WHT - BLU : 77.5  
BLU - RED : 77.5  
o
(Ambient Temp. 68 F (20 oC))  
Safety Device  
Type  
Internal Controller  
Over- Current Protection  
Run Capacitor  
Yes  
-
-
Micro F  
VAC  
Heat Exchanger Coil  
Coil  
Aluminum Plate Fin / Copper Tube  
Rows  
2
Fins per inch  
Face Area  
21.2  
5.49 (0.510)  
ft2 (m2)  
External Finish  
Acrylic baked-on enamel finish  
DATA SUBJECT TO CHANGE WITHOUT NOTICE.  
16  
Outdoor Unit C2472  
Control PCB  
Part No.  
CB-C2472  
Microprocessor  
250V 25A  
Controls  
Control Circuit Fuse  
Compressor  
Type  
DC Twin Rotary (Hermetic)  
G8T265FU1JW / 2,410W  
FV50S ... 1.49 (700)  
U - V : 0.36  
Compressor Model / Nominal Output  
Compressor Oil ... Amount  
Coil Resistance (Ambient Temp. 77 F (25 oC))  
Pints (cc)  
Ohm  
o
V - W : 0.36  
W - U : 0.36  
Safety Device  
CT (Peak current cut-off control)  
Compressor Discharge Temp. Control  
Operation cut-off control in abnormal ambient Temp.  
Yes  
Yes  
Yes  
Overload Relay  
Model  
Operation Temp.  
Micro F  
CS-7L115  
o
Open : 239 oF(115 oC), Close : 203 F(95 oC)  
Run Capacitor  
-
-
-
VAC  
Crankcase Heater  
Fan  
Type  
Propeller  
Q'ty ... Dia.  
inch (mm)  
1 ... D18-1/8 (D460)  
Fan Motor  
Type  
DC Motor  
Model ... Q'ty  
SIC-71FW-D490-1 ... 1  
No. of Poles  
8
Rough Measure RPM (Cool)  
Nominal Output  
850  
90  
W
Coil Resistance  
Ohm  
o
(Ambient Temp. 68 F (20 oC))  
-
Safety Device  
Type  
Internal Controller  
Over- Current Protection  
Over- Heat Protection  
Run Capacitor  
Yes  
Yes  
-
-
Micro F  
VAC  
Heat Exchanger Coil  
Coil  
Aluminum Plate Fin / Copper Tube  
Rows  
2
Fins per inch  
Face Area  
18.1  
6.40 (0.595)  
ft2 (m2)  
External Finish  
Acrylic baked-on enamel finish  
DATA SUBJECT TO CHANGE WITHOUT NOTICE.  
17  
Outdoor Unit CL1872  
Control PCB  
Part No.  
CB-CL1842  
Microprocessor  
250V 25A  
Controls  
Control Circuit Fuse  
Compressor  
Type  
DC Twin Rotary (Hermetic)  
C-6RVN93H0M / 1,050W  
FV50S ... 0.74 (350)  
R - S : 0.482  
Compressor Model / Nominal Output  
Compressor Oil ... Amount  
Coil Resistance (Ambient Temp. 68 F (20 oC))  
Pints (cc)  
Ohm  
o
S - T : 0.482  
T - R : 0.482  
Safety Device  
CT (Peak current cut-off control)  
Compressor Discharge Temp. Control  
Operation cut-off control in abnormal ambient Temp.  
Yes  
Yes  
Yes  
Overload Relay  
Model  
Operation Temp.  
Micro F  
CS-7L115  
o
Open : 239 oF(115 oC), Close : 203 F(95 oC)  
Run Capacitor  
-
-
-
VAC  
Crankcase Heater  
Fan  
Type  
Propeller  
Q'ty ... Dia.  
inch (mm)  
1 ... D16 -17/32 (D420)  
Fan Motor  
Type  
DC Motor  
Model ... Q'ty  
DAJ12-55J71A-CU ... 1  
No. of Poles  
Rough Measure RPM (Cool)  
Nominal Output  
8
820  
50  
W
Coil Resistance  
Ohm  
RED - WHT : 77.5  
WHT - BLU : 77.5  
BLU - RED : 77.5  
o
(Ambient Temp. 68 F (20 oC))  
Safety Device  
Type  
Internal Controller  
Over- Current Protection  
Run Capacitor  
Yes  
-
-
Micro F  
VAC  
Heat Exchanger Coil  
Coil  
Aluminum Plate Fin / Copper Tube  
Rows  
2
Fins per inch  
Face Area  
21.2  
5.49 (0.510)  
ft2 (m2)  
External Finish  
Acrylic baked-on enamel finish  
DATA SUBJECT TO CHANGE WITHOUT NOTICE.  
18  
Outdoor Unit CL2472  
Control PCB  
Part No.  
CB-CL2472  
Microprocessor  
250V 25A  
Controls  
Control Circuit Fuse  
Compressor  
Type  
DC Twin Rotary (Hermetic)  
G8T265FU1JW / 2,410W  
FV50S ... 1.49 (700)  
U - V : 0.36  
Compressor Model / Nominal Output  
Compressor Oil ... Amount  
Coil Resistance (Ambient Temp. 77 F (25 oC))  
Pints (cc)  
Ohm  
o
V - W : 0.36  
W - U : 0.36  
Safety Device  
CT (Peak current cut-off control)  
Compressor Discharge Temp. Control  
Operation cut-off control in abnormal ambient Temp.  
Yes  
Yes  
Yes  
Overload Relay  
Model  
Operation Temp.  
Micro F  
CS-7L115  
o
Open : 239 oF(115 oC), Close : 203 F(95 oC)  
Run Capacitor  
-
VAC  
-
Crankcase Heater  
230V 30W  
Fan  
Type  
Propeller  
Q'ty ... Dia.  
inch (mm)  
1 ... D18-1/8 (D460)  
Fan Motor  
Type  
DC Motor  
Model ... Q'ty  
SIC-71FW-D490-1 ... 1  
No. of Poles  
8
Rough Measure RPM (Cool)  
Nominal Output  
850  
90  
W
Coil Resistance  
Ohm  
o
(Ambient Temp. 68 F (20 oC))  
-
Safety Device  
Type  
Internal Controller  
Over- Current Protection  
Over- Heat Protection  
Run Capacitor  
Yes  
Yes  
-
-
Micro F  
VAC  
Heat Exchanger Coil  
Coil  
Aluminum Plate Fin / Copper Tube  
Rows  
2
Fins per inch  
Face Area  
18.1  
6.40 (0.595)  
ft2 (m2)  
External Finish  
Acrylic baked-on enamel finish  
DATA SUBJECT TO CHANGE WITHOUT NOTICE.  
19  
2-3. Other Component Specifications  
Indoor Unit  
KS1872  
KS2472  
Outdoor Unit C1872 C2472  
CL1872 CL2472  
Indoor heat exchanger sensor  
(Model:PTM-D51H-S3 TH1)  
Compressor temp sensor  
(Model:TKS 293B)  
Indoor air temp sensor  
(Model:PTM-D51H-S3 TH2)  
10  
9
8
7
6
5
4
3
2
1
0
200  
180  
160  
140  
120  
100  
80  
60  
40  
20  
0
50  
59 68 77 86 95 104  
32 50 68 86 104 122 140 158 176 194  
(0) (10)(20) (30) (40)(50) (60) (70)(80) (90)  
(10) (15) (20) (25) (30) (35) (40)  
Temperature °F (°C)  
Temperature °F (°C)  
Outdoor air temp sensor  
(Model:TKS295B)  
Outdoor heat exchanger sensor  
(Model:TKS292B)  
40  
35  
30  
25  
20  
15  
10  
5
0
-
4
5
14 23 32 41 50 59 68  
10) ( 5) (0) (5) (10) (15) (20)  
Temperature °F (°C)  
(
-20)(  
-15)(  
-
-
20  
3. DIMENSIONAL DATA  
Indoor Unit  
KS1872  
KS2472  
Unit: inch(mm)  
21  
Outdoor Unit C1872  
CL1872  
23-15/16  
5-11/32  
15/32  
11-17/32  
Wide tube service valve  
dia.1/2" (12.70)  
34-21/32 (880)  
2-17/32  
Narrow tube service valve  
dia.1/4" (6.35)  
3/32  
5-23/32  
1-13/16  
2-13/32  
Unit: inch(mm)  
22  
Outdoor Unit C2472  
CL2472  
23-15/16  
5-11/32  
15/32  
11-17/32  
Narrow tube service valve  
dia.1/4" (6.35)  
35-7/16(900)  
2-15/16  
Wide tube service valve  
dia.5/8" (15.88)  
2-1/32  
4-1/2  
1-21/32  
2-7/8  
Unit: inch(mm)  
23  
4. REFRIGERANT FLOW DIAGRAM  
4-1. Refrigerant Flow Diagram  
Indoor Unit  
KS1872  
KS2472  
Outdoor Unit C1872 C2472  
CL1872 CL2472  
Indoor unit  
Outdoor unit  
Wide tube  
service  
valve  
Wide tube  
*1  
Accumulator  
Muffler  
High pressure  
switch  
H.P.  
Electric  
expansion  
valve  
Narrow  
tube  
service  
valve  
M
Narrow tube  
O.D.  
1/4"  
(6.35 mm)  
Cooling cycle  
...  
...  
*1 O.D.1/2"(12.7mm)  
O.D.5/8"(15.88mm)  
1872 class  
2472 class  
Insulation of Refrigerant Tubing  
IMPORTANT  
Because capillary tubing is used in the outdoor unit, both the  
wide and narrow tubes of this air conditioner become cold. To  
prevent heat loss and wet floors due to dripping of  
condensation, both tubes must be well insulated with a  
proper insulation material. The thickness of the insulation  
should be a min. 5/16"(8 mm).  
Insulation  
Thickness:  
Min. 5/16"(8 mm)  
Thickness:  
Min. 5/16"(8 mm)  
Narrow tube  
After a tube has been insulated,  
never try to bend it into a narrow  
Wide tube  
CAUTION  
curve because it can cause the tube  
to break or crack.  
24  
5. PERFORMANCE DATA  
5-1. Temperature Charts  
Indoor Unit  
KS1872  
Outdoor Unit C1872  
Cooling Characteristics (230V)  
159  
(1.1)  
Outdoor fan speed  
Low High  
145  
(1.0)  
131  
(0.9)  
117  
(0.8)  
77  
(25)  
86  
(30)  
95  
(35)  
104  
(40)  
Outdoor inlet air D.B. temp. °F(°C)  
9
8
7
6
Outdoor fan speed  
Low  
High  
77  
(25)  
86  
(30)  
95  
(35)  
104  
(40)  
Outdoor inlet air D.B. temp. °F(°C)  
Outdoor fan speed  
Low  
High  
68.0(20)  
64.4(18)  
60.8(16)  
57.2(14)  
53.6(12)  
50.0(10)  
77  
(25)  
86  
95  
104  
(40)  
(30)  
(35)  
Outdoor inlet air D.B. temp. °F(°C)  
NOTE  
Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.  
Overload prevention operates to protect the air conditioner when outdoor ambient temperature becomes extremely high in  
heating mode. (Refer to "9-2. Overload prevention during heating.")  
:Points of rating condition  
Black dots in above charts indicate the following rating conditions.  
Cooling: Indoor air temperature 80 °F D.B. / 67 °F W.B.  
Outdoor air temperature 95 °F D.B.  
25  
Indoor Unit  
KS1872  
Outdoor Unit CL1872  
Cooling Characteristics (230V)  
159  
(1.1)  
Outdoor fan speed  
Low High  
145  
(1.0)  
131  
(0.9)  
117  
(0.8)  
77  
(25)  
86  
(30)  
95  
(35)  
104  
(40)  
Outdoor inlet air D.B. temp. °F(°C)  
9
8
7
6
Outdoor fan speed  
Low  
High  
77  
(25)  
86  
(30)  
95  
(35)  
104  
(40)  
Outdoor inlet air D.B. temp. °F(°C)  
Outdoor fan speed  
Low  
High  
68.0(20)  
64.4(18)  
60.8(16)  
57.2(14)  
53.6(12)  
50.0(10)  
77  
(25)  
86  
95  
104  
(40)  
(30)  
(35)  
Outdoor inlet air D.B. temp. °F(°C)  
NOTE  
Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.  
Overload prevention operates to protect the air conditioner when outdoor ambient temperature becomes extremely high in  
heating mode. (Refer to "9-2. Overload prevention during heating.")  
:Points of rating condition  
Black dots in above charts indicate the following rating conditions.  
Cooling: Indoor air temperature 80 °F D.B. / 67 °F W.B.  
Outdoor air temperature 95 °F D.B.  
26  
Indoor Unit  
KS2472  
Outdoor Unit C2472  
Cooling Characteristics (230V)  
159  
(1.1)  
Outdoor fan speed  
Low High  
145  
(1.0)  
131  
(0.9)  
117  
(0.8)  
77  
(25)  
86  
(30)  
95  
(35)  
104  
(40)  
Outdoor inlet air D.B. temp. °F(°C)  
15  
Outdoor fan speed  
Low  
High  
14  
13  
12  
11  
10  
9
77  
(25)  
86  
(30)  
95  
(35)  
104  
(40)  
Outdoor inlet air D.B. temp. °F(°C)  
Outdoor fan speed  
Low  
High  
68.0(20)  
64.4(18)  
60.8(16)  
57.2(14)  
53.6(12)  
50.0(10)  
77  
(25)  
86  
95  
104  
(40)  
(30)  
(35)  
Outdoor inlet air D.B. temp. °F(°C)  
NOTE  
Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.  
Overload prevention operates to protect the air conditioner when outdoor ambient temperature becomes extremely high in  
heating mode. (Refer to "9-2. Overload prevention during heating.")  
:Points of rating condition  
Black dots in above charts indicate the following rating conditions.  
Cooling: Indoor air temperature 80 °F D.B. / 67 °F W.B.  
Outdoor air temperature 95 °F D.B.  
27  
Indoor Unit  
KS2472  
Outdoor Unit CL2472  
Cooling Characteristics (230V)  
159  
(1.1)  
Outdoor fan speed  
Low High  
145  
(1.0)  
131  
(0.9)  
117  
(0.8)  
77  
(25)  
86  
(30)  
95  
(35)  
104  
(40)  
Outdoor inlet air D.B. temp. °F(°C)  
15  
Outdoor fan speed  
Low  
High  
14  
13  
12  
11  
10  
9
77  
(25)  
86  
(30)  
95  
(35)  
104  
(40)  
Outdoor inlet air D.B. temp. °F(°C)  
Outdoor fan speed  
Low  
High  
68.0(20)  
64.4(18)  
60.8(16)  
57.2(14)  
53.6(12)  
50.0(10)  
77  
(25)  
86  
95  
104  
(40)  
(30)  
(35)  
Outdoor inlet air D.B. temp. °F(°C)  
NOTE  
Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.  
Overload prevention operates to protect the air conditioner when outdoor ambient temperature becomes extremely high in  
heating mode. (Refer to "9-2. Overload prevention during heating.")  
:Points of rating condition  
Black dots in above charts indicate the following rating conditions.  
Cooling: Indoor air temperature 80 °F D.B. / 67 °F W.B.  
Outdoor air temperature 95 °F D.B.  
28  
5-2. Air Throw Distance Charts  
Indoor Unit  
KS1872  
Room air temp. : 80°F (26.7°C)  
Cooling  
Fan speed  
:
High  
Horizontal distance (ft.)  
10 15 20  
0
5
25  
30  
0
5
10  
15  
: Flap angle 0 ,  
: Flap angle 30 ,  
: Axis air velocity 0  
: Axis air velocity 30  
29  
Indoor Unit  
KS2472  
Room air temp. : 80°F (26.7°C)  
Cooling  
Fan speed  
:
High  
Horizontal distance (ft.)  
10 15 20  
0
5
25  
30  
0
5
10  
15  
: Flap angle 0 ,  
: Flap angle 30 ,  
: Axis air velocity 0  
: Axis air velocity 30  
30  
6. ELECTRICAL DATA  
6-1. Electrical Characteristics  
Indoor Unit  
KS1872  
Outdoor Unit C1872  
Cooling  
<
230V >  
Indoor Unit  
Fan Motor  
Outdoor Unit  
Fan Motor + Compressor  
230V Single-phase 60Hz  
6.7  
Complete Unit  
Performance at  
Rating conditions  
Running amp.  
Power input  
A
0.3  
32  
7.0  
W
1,468  
1,500  
Rating conditions:  
Indoor air temperature:  
Outdoor air temperature:  
80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.  
95°F (35°C) D.B.  
Cooling  
<
208V >  
Indoor Unit  
Fan Motor  
Outdoor Unit  
Complete Unit  
Fan Motor + Compressor  
Performance at  
208V Single-phase 60Hz  
Rating conditions  
Running amp.  
Power input  
0.3  
32  
7.4  
7.7  
A
1,468  
1,500  
W
Rating conditions:  
Indoor air temperature:  
Outdoor air temperature:  
80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.  
95°F (35°C) D.B.  
Indoor Unit  
KS1872  
Outdoor Unit CL1872  
Cooling  
<
230V >  
Indoor Unit  
Fan Motor  
Outdoor Unit  
Complete Unit  
Fan Motor + Compressor  
Performance at  
230V Single-phase 60Hz  
Rating conditions  
Running amp.  
Power input  
0.3  
32  
6.7  
7.0  
A
1,468  
1,500  
W
Rating conditions:  
Indoor air temperature:  
Outdoor air temperature:  
80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.  
95°F (35°C) D.B.  
Cooling  
<
208V >  
Indoor Unit  
Fan Motor  
Outdoor Unit  
Complete Unit  
Fan Motor + Compressor  
Performance at  
208V Single-phase 60Hz  
Rating conditions  
Running amp.  
Power input  
0.3  
32  
7.4  
7.7  
A
1,468  
1,500  
W
Rating conditions:  
Indoor air temperature:  
Outdoor air temperature:  
80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.  
95°F (35°C) D.B.  
31  
Indoor Unit  
KS2472  
Outdoor Unit C2472  
Cooling  
<
230V >  
Indoor Unit  
Fan Motor  
Outdoor Unit  
Fan Motor + Compressor  
230V Single-phase 60Hz  
10.3  
Complete Unit  
Performance at  
Rating conditions  
Running amp.  
Power input  
A
0.5  
55  
10.8  
W
2,300  
2,355  
Rating conditions:  
Indoor air temperature:  
Outdoor air temperature:  
80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.  
95°F (35°C) D.B.  
Cooling  
<
208V >  
Indoor Unit  
Fan Motor  
Outdoor Unit  
Complete Unit  
Fan Motor + Compressor  
Performance at  
208V Single-phase 60Hz  
Rating conditions  
Running amp.  
Power input  
0.5  
55  
11.6  
12.1  
A
2,300  
2,355  
W
Rating conditions:  
Indoor air temperature:  
Outdoor air temperature:  
80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.  
95°F (35°C) D.B.  
Indoor Unit  
KS2472  
Outdoor Unit CL2472  
Cooling  
<
230V >  
Indoor Unit  
Fan Motor  
Outdoor Unit  
Complete Unit  
Fan Motor + Compressor  
Performance at  
230V Single-phase 60Hz  
Rating conditions  
Running amp.  
Power input  
0.5  
55  
10.3  
10.8  
A
2,300  
2,355  
W
Rating conditions:  
Indoor air temperature:  
Outdoor air temperature:  
80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.  
95°F (35°C) D.B.  
Cooling  
<
208V >  
Indoor Unit  
Fan Motor  
Outdoor Unit  
Complete Unit  
Fan Motor + Compressor  
Performance at  
208V Single-phase 60Hz  
Rating conditions  
Running amp.  
Power input  
0.5  
55  
11.6  
12.1  
A
2,300  
2,355  
W
Rating conditions:  
Indoor air temperature:  
Outdoor air temperature:  
80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.  
95°F (35°C) D.B.  
32  
6-2. Electric Wiring Diagrams  
Indoor Unit  
KS1872  
KS2472  
To avoid electrical shock hazard, be sure to  
disconnect power before checking, servicing  
and/or cleaning any electrical parts.  
WARNING  
TERMINAL BASE  
EVAPORATOR  
1
2
3
BLK  
WHT  
RED  
AC1 AC2 SI  
1 1  
2 2  
3 3  
4 4  
5 5  
6 6  
7 7  
8 8  
9 9  
10 10  
1 1  
2 2  
3 3  
4 4  
5 5  
6 6  
7 7  
8 8  
9 9  
10 10  
RED  
WHT  
WHT  
WHT  
WHT  
WHT  
WHT  
WHT  
WHT  
WHT  
CONNECTOR  
1 1  
2 2  
3 3  
4 4  
5 5  
RED  
1 1  
2 2  
3 3  
4 4  
5 5  
PNK  
BLU  
BRN  
YEL  
FLAP  
5P (WHT)  
FLAP  
LAMP  
10P(  
)
WHT  
FLAP MOTOR  
CONTROLLER  
ROOM THERMISTOR  
1 1  
2 2  
3 3  
4 4  
BLK  
BLK  
BLK  
BLK  
RED 1 1  
2 2  
BLK 3 3  
WHT 4 4  
YEL 5 5  
BLU 6 6  
ROOM/COIL  
4P(  
)
WHT  
DCM  
FM  
6P(BLU)  
COIL THERMISTOR  
FAN MOTOR  
1 1  
2 2  
3 3  
ION  
WHT  
3P (  
)
HA  
JEM-A  
4P (WHT)  
1 2 3 4  
1 2 3 4  
1 2 3 4  
ION  
TERMINAL  
ION ASSY  
8FA2-5257-70500-0  
33  
Outdoor Unit C1872  
CL1872  
To avoid electrical shock hazard, be sure to  
disconnect power before checking, servicing  
and/or cleaning any electrical parts.  
WARNING  
REACTANCE  
BLK  
POWER RELAY  
1
1
2
2
6
1
4
5
BLK  
W
W
W
W
W
W
W
W
W
W
W
W
W
W
+
+
-
-
-
-
L1  
L2 HIC HIC  
BD BD  
HIC HIC  
AC2 AC2  
A1 A2  
FERRITE  
CORE  
TERMINAL  
PLATE  
E1  
E
25A  
1
2
3
4
5
6
W
W
W
ACIN1  
ACIN2  
SI-A  
BLK  
WHT  
RED  
W
W
W
U
V
CONTROLLER  
GND  
W
BLK  
WHT  
DCFM  
COMP  
A-TH  
COIL/OUTDOOR  
MV0  
1
2
3
4
5
6
7
1
1
2
2
1
1
2
2
3
3
4
4
1
1
2
2
3
3
4
4
1
1
2
2
3
3
4
4
5
5
N
L
1
1
2
2
3
3
POWER  
SUPPLY  
1
1
2
2
3
3
4
4
5
5
6
6
7
7
HIGH PRESSURE  
SWITCH  
1
1
2
2
3
3
4
4
5
5
1
2
1
2
BLK  
BLK  
MV  
2P-CONNECTOR (BLK)  
S
MAGNETIC COIL  
R
T
CM  
FM  
GRN/YEL  
OVERLOAD RELAY  
(OLR)  
COMPRESSOR  
MOTOR  
FAN MOTOR  
1
2
1
2
WHT  
WHT  
WHT  
WHT  
2P-CONNECTOR (RED)  
8FA2-5257-68600-2  
34  
Outdoor Unit C2472  
To avoid electrical shock hazard, be sure to  
disconnect power before checking, servicing  
and/or cleaning any electrical parts.  
WARNING  
REACTANCE  
BLK  
POWER RELAY  
1
1
2
2
6
1
4
5
BLK  
W
W
W
W
W
W
W
W
W
W
W
W
W
W
+
+
-
-
-
-
L1  
L2 HIC HIC  
BD  
BD  
HIC HIC  
AC2 AC2  
A1 A2  
FERRITE  
CORE  
TERMINAL  
PLATE  
E1  
E
25A  
1
2
3
4
5
6
W
W
W
ACIN1  
ACIN2  
SI-A  
BLK  
WHT  
RED  
W
W
W
U
V
CONTROLLER  
GND  
W
BLK  
WHT  
DCFM  
COMP  
A-TH  
COIL/OUTDOOR  
MV0  
1
2
3
4
5
6
7
1
1
2
2
1
1
2
2
3
3
4
4
1
1
2
2
3
3
4
4
1
1
2
2
3
3
4
4
5
5
N
L
1
1
2
2
3
3
POWER  
SUPPLY  
1
1
2
2
3
3
4
4
5
5
6
6
7
7
HIGH PRESSURE  
SWITCH  
1
1
2
2
3
3
4
4
5
5
1
2
1
2
BLK  
BLK  
MV  
2P-CONNECTOR (BLK)  
V
MAGNETIC COIL  
U
W
CM  
FM  
OVERLOAD RELAY  
(OLR)  
COMPRESSOR  
MOTOR  
FAN MOTOR  
1
2
1
2
WHT  
WHT  
WHT  
WHT  
2P-CONNECTOR (RED)  
8FA2-5257-68700-3  
35  
Outdoor Unit CL2472  
To avoid electrical shock hazard, be sure to  
disconnect power before checking, servicing  
and/or cleaning any electrical parts.  
WARNING  
REACTANCE  
BLK  
(
)
)
1P-CONNECTOR WHT  
POWER RELAY  
1
1
2
2
1
1
6
1
4
(
1P-CONNECTOR WHT  
1
1
5
BLK  
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
W
+
+
-
-
-
-
HEATER1 HEATER0 L1  
L2 HIC HIC  
BD  
BD  
HIC HIC  
AC2 AC2  
A1 A2  
FERRITE  
CORE  
TERMINAL  
PLATE  
E1  
E
25A  
CRANKCASE  
HEATER  
1
2
3
4
5
6
W
W
W
ACIN1  
ACIN2  
SI-A  
BLK  
WHT  
RED  
W
U
CONTROLLER  
GND  
W
V
W
W
BLK  
WHT  
DCFM  
COMP  
A-TH  
COIL/OUTDOOR  
MV0  
1
2
3
4
5
6
7
1
1
2
2
1
1
2
2
3
3
4
4
1
1
2
2
3
3
4
4
1
1
2
2
3
3
4
4
5
5
N
L
1
1
2
2
3
3
POWER  
SUPPLY  
1
1
2
2
3
3
4
4
5
5
6
6
7
7
HIGH PRESSURE  
SWITCH  
1
1
2
2
3
3
4
4
5
5
1
2
1
2
BLK  
BLK  
MV  
2P-CONNECTOR (BLK)  
V
MAGNETIC COIL  
U
W
CM  
FM  
OVERLOAD RELAY  
(OLR)  
COMPRESSOR  
MOTOR  
FAN MOTOR  
1
2
1
2
WHT  
WHT  
WHT  
WHT  
2P-CONNECTOR (RED)  
8FA2-5257-68400-3  
36  
7. INSTALLATION INSTRUCTIONS  
7-1. Installation Site Selection  
7-1-1. Indoor Unit  
To prevent abnormal heat  
WARNING  
generation and the possibility  
of fire, do not place obstacles,  
enclosures and grilles in front  
of or surrounding the air  
conditioner in a way that may  
block air flow.  
6" (15 cm)  
min.  
2" (5 cm)  
min.  
2" (5 cm)  
min.  
Front View  
AVOID:  
Fig. 1  
direct sunlight.  
nearby heat sources that may affect performance of  
the unit.  
Tubing length (L)  
INDOOR  
UNIT  
areas where leakage of flammable gas may be  
expected.  
Elevation  
difference (H)  
OUTDOOR  
UNIT  
places where large amounts of oil mist exist.  
DO:  
select an appropriate position from which every corner  
of the room can be uniformly cooled. (High on a wall  
is best.)  
Fig. 2  
select a location that will hold the weight of the unit.  
select a location where tubing and drain hose have  
the shortest run to the outside.  
CAUTION  
Indoor unit  
Wall  
For stable operation of  
the air conditioner, do not  
install wall-mounted type  
indoor units less than  
allow room for operation and maintenance as well as  
unrestricted air flow around the unit. (Fig. 1)  
install the unit within the maximum elevation  
difference (H) above or below the outdoor unit and  
within a total tubing length (L) from the outdoor unit as  
detailed in Table 1 and Fig. 2.  
Minimum height  
from floor level  
5' (1.5 m)  
5' (1.5 m) from floor level.  
Floor level  
Install the indoor unit more than 3.3' (1 m) away from  
any antenna or power lines or connecting wires used  
for television, radio, telephone, security system, or  
intercom. Electrical noise from any of these sources  
may affect operation.  
Fig. 3  
Table 1  
Max. Allowable Tubing  
Length at Shipment  
(ft.)  
Limit of Tubing  
Length (L)  
(ft.)  
Limit of Elevation  
Difference (H)  
(ft.)  
Required Amount of  
Additional Refrigerant  
(oz. / ft.)*  
Model  
KS1872  
KS2472  
25  
33  
98  
49  
49  
0.27  
0.27  
131  
* If total tubing length becomes 25 to 98 ft. (Max.) or 33 to 131 ft. (Max.), charge additional refrigerant (R410A) by 0.27 oz. /ft.  
No additional charge of compressor oil is necessary.  
37  
7-1-2. Outdoor Unit  
Exhaust fan  
NO  
Hot air  
AVOID:  
Heat source  
heat sources, exhaust fans, etc. (Fig. 4)  
damp, humid or uneven locations.  
DO:  
Outdoor unit  
choose a place as cool as possible.  
choose a place that is well ventilated.  
allow enough room around the unit for air intake/  
exhaust and possible maintenance. (Fig. 5a or 5b)  
provide a solid base (level concrete pad, concrete  
block, 4" × 1' 4" (10 × 40 cm) or 6" × 1'4" (15 × 40  
cm) beams or equal), a minimum of 4" (10 cm) or  
6" (15 cm) above ground level to reduce humidity  
and protect the unit against possible water damage  
and decreased service life. (Fig. 5c or 5d)  
Install cushion rubber under unit's feet to reduce  
vibration and noise. (Fig. 5e)  
Fig. 4  
Obstacle above  
Min.  
(C1872, CL1872)  
Min.  
7' (2 m)  
7' (2 m)  
Air intake  
Min. 4" (10 cm) Valve  
side  
Min. 10"  
(25 cm)  
Min.  
2" (5 cm)  
use lug bolts or equal to bolt down unit, reducing  
vibration and noise.  
Air discharge  
Min.  
1'4" (40 cm)  
Install in a location where no antenna of a  
television or radio exists within 10' (3 m).  
Ground  
Min. 4" (10 cm)  
Air intake  
Fig. 5a  
(C1872, CL1872)  
Anchor bolts  
(4 pcs.)  
Obstacle above  
Min.  
(C2472, CL2472)  
Min. 4" (10 cm)  
Air intake  
Min.  
7' (2 m)  
7' (2 m)  
Air intake  
Min. 8" (20 cm) Valve  
side  
Concrete  
or equal  
Min. 10"  
(25 cm)  
Min.  
4" (10 cm)  
Air discharge  
Min.  
1'8" (50 cm)  
Ground  
Min. 8" (20 cm)  
Air intake  
Fig. 5c  
Fig. 5b  
Anchor bolts  
(4 pcs.)  
(C2472, CL2472)  
Min. 6" (15 cm)  
Air intake  
Concrete  
or equal  
Cushion rubber  
Fig. 5e  
Fig. 5d  
38  
7-2. Recommended Wire Length and Diameter  
Regulations on wiring diameter differ from locality to locality. For field wiring requirements, please refer to your  
local electrical codes. Carefully observe these regulations when carrying out the installation.  
Table 2 lists recommended wire lengths and diameters for power supply systems.  
NOTE  
Refer to the wiring system diagram (Fig. 6) for the meaning of (A), (B) and (C) in Table 2.  
Refer to your local codes or in the absence of local codes see the National Electric Code: ANSI/NFPA70.  
Table 2  
(A)+(B) (A) Power Supply Wiring Length (ft.)  
(B) Power Line Length (ft.)  
(C) Control  
AWG  
Fuse or Circuit  
Breaker Capacity  
Line Length (ft.)  
(#14)  
(#12)  
(#14)  
Model  
C1872, C2472, CL1872, CL2472  
20A  
131 (Max.)  
230 (Max.)  
65 (Max.)  
#...AWG (American Wire Gauge)  
WARNING  
WIRING SYSTEM DIAGRAM  
INDOOR  
UNIT  
Terminal  
OUTDOOR  
UNIT  
Disconnect  
switch  
Field supply  
Be sure to comply with local codes on running the  
wire from the indoor unit to the outdoor unit (size of  
wire and wiring method, etc.).  
Each wire must be firmly connected.  
No wire should be allowed to touch refrigerant tubing,  
the compressor, or any moving part.  
Terminal  
(B)  
230 / 208V  
1
2
1
2
230 / 208V  
230 / 208V  
3
3
4
5
6
(C)  
(A)  
L1  
L2  
Grounding line  
(B)  
WARNING  
Grounding  
line  
To avoid the risk of electrical shock, each air  
conditioner unit must be grounded.  
Fig. 6  
For the installation of a grounding device, please  
observe local electrical codes.  
Grounding is necessary, especially for units using  
inverter circuits, in order to release charged  
electricity and electrical noise caused by high  
tension. Otherwise, electrical shock may occur.  
Place a dedicated ground more than 7' (2 m) away  
from other grounds and do not have it shared with  
other electric appliances.  
CAUTION  
Be sure to connect the power supply line to the outdoor unit as shown in the wiring  
diagram. The indoor unit draws its power from the outdoor unit.  
Do not run wiring for antenna, signal, or power lines of television, radio, stereo, telephone,  
security system, or intercom any closer than 3' 4" (1 m) from the power cable and wires  
between the indoor and outdoor units. Electrical noise may affect the operation.  
39  
7-3. Remote Control Unit Installation Position  
The remote control unit can be operated from either a non-fixed position or a wall-mounted position.  
To ensure that the air conditioner operates correctly, do not install the remote control unit in the following places:  
In direct sunlight  
Behind a curtain or other place where it is covered  
More than 26' (8 m) away from the air conditioner  
In the path of the air conditioner’s airstream  
Where it may become extremely hot or cold  
Where it may be subject to electrical or magnetic interference  
Where there is an obstacle between the remote control unit and the air conditioner (since a check signal is sent  
from the remote control unit every 5 minutes)  
7-3-1. Mounting on a Wall  
Before mounting the  
Rear side  
remote control unit, press  
the ON/OFF operation  
button at the mounting  
location to make sure that  
the air conditioner  
Remote control unit mount  
Press  
Mounting screws  
5/32 × 5/8"(4 × 16mm)  
(included)  
operates from that  
Hole  
location. The indoor unit  
should make a beeping  
sound to indicate that it  
has received the signal.  
Set in  
place  
To prevent loss of the remote control  
unit, you can connect the remote  
control unit to the mount by passing  
a string through the remote control  
unit and attachment hole.  
To take out the remote control unit, pull it forward.  
Fig. 7  
40  
7-4. How to Test Run the Air Conditioner  
After turning on power to the air conditioner, use the remote  
controller and follow the steps below to conduct the test run.  
(1) Set the remote controller in Test Run mode.  
(Fig. 8a)  
a) Press and hold the ION button.  
b) Then press and hold the 1HR TIMER button.  
ON/OFF  
operation  
button  
c) At the same time, press the ACL (reset) button once.  
Use a pointed object such as the tip of a pen to press  
the ACL button.  
ION  
button  
After a few seconds, " " appears and "oP-1" blinks in  
the remote controller display area.  
(Fig. 8b)  
1HR.  
TIMER  
button  
d) Release the 1HR TIMER button.  
e) Release the ION button.  
(2) Start Cooling mode test run by pressing the ON/OFF  
operation button of the remote controller. (Fig. 8a)  
This starts the fan producing uncooled forced air with  
the 4 indicator lamps (OPERATION lamp, TIMER  
lamp, QUIET lamp, and ION lamp) on the main unit  
blinking. (Fig. 8c)  
ACL  
(Reset)  
button  
After 3 minutes, the system shifts into cooling operation,  
and cool air will start to be felt. Cool mode test  
run is unaffected by the room temperature.  
Fig. 8a  
(3) Press the ON/OFF operation button of the remote controller  
again to stop the test run. (Fig. 8a)  
(4) Finally press the ACL (reset) button of the remote controller  
to release it from Test Run mode to return to normal  
mode. (Fig. 8a)  
" " and "oP-1" will disappear from the remote controller  
display area.  
IMPORTANT  
Fig. 8b  
After the test run is completed, be sure to press the ACL  
(reset) button to return to normal mode. The air conditioner  
will not operate correctly if this is not done.  
OPERATION lamp  
TIMER lamp  
QUIET lamp  
ION lamp  
Fig. 8c  
41  
Grille  
Air intake grille  
7-5. Remove the Grille to Install the  
Indoor Unit  
Basically, these models can be installed and wired without  
removing the grille. If access to any internal part is needed,  
follow the steps as given below.  
Fig. 9a  
How to remove the grille  
(1) Grasp both ends of the air intake grille, and remove  
it by opening towards the front and pulling towards  
you. (Fig. 9a)  
(2) Remove the 3 screws. (Fig. 9b)  
(3) Remove the screw on the right side cover plate and  
open the cover. (Fig. 10a)  
(4) Take out the thermistor from the grille. (Fig. 10b)  
(5) Press the 3 tabs at the top of the grille and the 3  
tabs on the front face to separate the grille from the  
frame. (Fig. 11a)  
Fig. 9b  
Cover  
Thermistor  
Thermistor  
(6) Pull the grill toward you to remove it.  
How to replace the grille  
(1) When installing the grille, place the bottom of the  
grille into the frame first. (Fig. 11b)  
Fig. 10b  
Fig. 10a  
Tab  
Then insert the tabs on the top of the grille and on  
the front face into the frame.  
(2) Make sure that the grille and frame are firmly fitted  
together by engaging the tabs.  
(3) Attach the thermistor on the grille. (Fig. 10a)  
(4) Close the cover and replace the screw. (Fig. 10a)  
(5) Affix the grille with the 3 previously removed screws.  
(Fig. 9b)  
Tab  
(6) Install the air intake grille.  
Fig. 11a  
(a) Allow the edge of the air intake grille to slide into the  
top of the indoor unit, and then insert it all the way  
inside. (Fig. 12a)  
(b) Press the bottom right and left corners and center of  
the air intake grille to attach it to the indoor unit.  
(Fig. 12b)  
NOTE  
Attach so that the round pins at the top right and left cor-  
ners of the air intake grille are inserted into the grooves at  
the top right and left of the indoor unit.  
Fig. 11b  
Pin  
Groove  
Fig. 12a  
Fig. 12b  
42  
8. MAINTENANCE  
Tab  
8-1. Address Setting of the Remote  
Control Unit  
The address can be set in order to prevent  
interference between remote controllers when two  
Sanyo indoor units are installed near each other. The  
address is normally set to "A." To set a different  
address, it is necessary to change the address on the  
second remote controller.  
Fig. 13  
NOTE  
Once changed, you cannot restore the original  
address setting of the air conditioner.  
(1) Switch on the power source.  
(2) Break the address-setting tab marked "A" on the  
second remote controller to change the address  
(Fig. 13). When the tab is removed, the address is  
automatically set to B (Fig. 14).  
ACL button  
(3) Press and hold the remote controller ION button  
and 1 HR TIMER button. At the same time, press  
the ACL(reset) button. Use a thin object such as  
the tip of a pen to press the ACL button. When  
this has been done, "oP-1" (test run) appears,  
blinking, in the remote controller clock display  
area.  
Fig. 14  
(4) Each time the 1 HR TIMER button is pressed, the  
display changes as shown below. Press this  
button 2 times to change the display to "oP-7"  
(address setting). (Fig. 15)  
ON/OFF  
operation  
button  
ION  
button  
Test run mode  
Self-diagnostic mode  
Address setting mode  
1HR.  
TIMER  
button  
(5) "oP-7" has now been selected for address setting.  
(6) Press the ON/OFF operation button on the remote  
controller. (Fig. 15) Check that the "beep"signal-  
received sound is heard from the second indoor  
unit (approximately 5 times). The sound you hear  
is the signal that the remote controller address  
has been changed.  
(7) Finally press the remote controller ACL (reset)  
button to cancel the blinking "oP-7" display. (Fig.  
15)  
ACL  
(Reset)  
button  
Changing of the second remote controller address is  
now completed.  
Fig. 15  
43  
8-2. Disconnecting and Connecting Positive Connector for Outdoor Unit  
One of the two types of connectors illustrated at left is used. Their  
basic structure is the same for each.  
How to Disconnect  
Hold the resin connector cover, and pull the connector off.  
You cannot disconnect the connector by pulling the wire since  
it is locked inside. Always hold the cover to disconnect. (See  
illustration at left.) For the connector without the resin cover,  
push the lock in the direction of "2" while pulling it off.  
Pull the cover upward  
How to Connect  
In order to connect, hold the resin cover of the connector and  
push it in. Confirm the click sound for the inside lock.  
When the cover is pulled upward, the lock is  
released with the sequence of 1 and 2.  
44  
9. FUNCTIONS  
9-1. Operation Functions  
Emergency operation  
SENSOR DRY  
Emergency operation is available when the remote  
controller malfunctions, has been lost, or otherwise  
cannot be used.  
During DRY operation, the system adjusts the room  
temperature and fan speed according to the conditions in the  
room, in order to maintain a comfortable room environment.  
SENSOR DRY operation  
To operate the system, press the OPERATION button,  
which is also used as the receiver, below the unit display.  
Each time this button is pressed, the OPERATION lamp  
changes color to indicate the type of operation. Select the  
desired type of operation.  
DRY operation is as shown in the figure below.  
Load  
COOL zone  
A zone  
COOL  
(GREEN)  
STOP  
(Lamp Off)  
B zone  
The set temperature is 4°F(2°C) below the detected room  
temperature in the case of cooling operation.  
Conditions are monitored at all  
times when the room temperature  
is below 59°F(15°C).  
DRY A  
The compressor operation frequency varies.  
The indoor fan operates with 1/f fluctuation.  
DRY B  
The compressor operates at a low operating frequency.  
The indoor fan operates with 1/f fluctuation.  
Monitor  
Monitoring operation takes place when the room temperature  
is below 59°F(15°C), or more than 5°F(3°C) below the set  
temperature.  
When the monitoring range is entered, the compressor stops,  
and the indoor fan operates with 1/f fluctuation.  
NOTE  
(CLxx models only)  
The Sensor Dry operation during the Low Ambient Cooling  
Mode (outside air temperature:59°F(15°C) or lower) is as  
follows.  
DRY A  
and  
DRY B  
The compressor operates a cycle of 3 minutes ON and 6  
minutes OFF repeatedly.  
PAM- control  
In order to further improve inverter performance, control is  
switched between PWM control at low operation speeds, and  
PAM control at high operation speeds, making the most  
effective use of power.  
45  
HIGH POWER  
NIGHT SETBACK  
This function acts to raise the power but keeps the AC system in  
the same operating mode.  
This function is set with the HIGH POWER button on the remote  
controller.  
(It can be set regardless of the temperature and fan speed  
settings.)  
When NIGHT SETBACK operation is set, the temperature and  
fan speed settings will be adjusted automatically to allow  
comfortable sleep.  
When NIGHT SETBACK operation is set, " mark" appears on  
the remote controller. The main unit display lamp also becomes  
dimmer.  
HIGH POWER operation from remote controller  
COOL and DRY modes  
The unit operates at maximum output for 30 minutes,  
regardless of the desired temperature.  
The fan speed is 1 step above "High."  
When the night setback mode is selected, the air conditioner  
automatically raises the temperature setting 2°F(1°C) when 30  
minutes have passed after the selection was made, and then  
another 2°F(1°C) after another 30 minutes have passed,  
regardless of the indoor temperature when night setback was  
selected. This enables you to save energy without sacrificing  
comfort. This function is convenient when gentle cooling is  
needed.  
Frequency  
MAX  
2°F(1°C)  
Setting  
temperature  
Time  
0
2°F(1°C)  
30 min.  
5 min.  
Press the NIGHT  
SETBACK button  
30 min.  
30 min.  
Start  
End  
Time  
NOTE  
When HIGH POWER operation ends, the unit operates at low  
Hz for 5 minutes, regardless of the thermostat OFF conditions.  
When in DRY mode, operation is in the cooling zone.  
Lamp colors  
OPERATION lamp  
DRY operation  
COOL operation  
FAN operation  
Orange  
Green  
Green  
TIMER lamp  
Green  
Green  
Green  
QUIET lamp  
ION lamp  
Timer backup  
Operation stops if there are no operator controls for 25 hours or  
longer after unit operation switched from OFF to ON by use of  
ON timer operation.  
46  
9-2. Protective Functions  
Compressor discharge temperature control  
Freeze prevention  
This function controls the operation frequency to prevent the  
compressor discharge temperature from rising more than a  
specified temperature.  
During COOL or DRY operation, freezing is detected and  
operation is stopped when the temperature of the indoor heat  
exchanger matches the conditions below.  
1. Freeze-prevention operation is engaged when the  
Compressor discharge temperature °F(°C)  
temperature of the indoor heat exchanger is below 43°F(6°C).  
2. Restart after freeze-prevention operation occurs when the  
temperature of the indoor heat exchanger reaches 46°F(8°C)  
or above.  
Approx.  
A
214  
(101)  
Approx.  
B
201  
C
(94)  
8
a
b
c
d
A
B
6
2
a. Area: Automatic capacity control.  
b. When the temperature rises above Point A, the operation  
frequency is reduced at a specified rate.  
c. Area: Further frequency increase is prohibited.  
d. When the temperature falls below Point B, prevention of a rise  
in frequency is released and the air conditioner operates as in  
*
a
b
c
d
a. Area: Automatic capacity control  
b. When the temperature drops below Point A, the operation  
frequency is reduced by a certain proportion.  
c. Area: Frequency increase is prohibited.  
d. When the temperature reaches Point C or above, freezing  
a
area.  
* The compressor will stop if the temperature of the compressor  
discharge exceeds 248°F(120°C) due to shortage of gas or  
other reason.  
prevention is ended and control is the same as in the  
a
area.  
* When the temperature drops to below 4°F(2°C) (continuously  
for 2 minutes or longer), the compressor stops.  
Once the freeze condition is detected, the air conditioner will  
work less than the maximum frequency until it is turned off.  
CT (Peak current cut-off control)  
This function prevents the circuit breaker or fuse from operating  
to open the circuit. This function works when electrical current  
has increased due to an increase in the cooling load,  
or to a decrease in the power supply voltage. In these cases,  
operation frequency is reduced or operation is interrupted auto-  
matically to control the electrical current for operation.  
NOTE  
(CLxx models only)  
The Freeze Prevention Control during the Low Ambient Cooling  
Mode (outside air temperature:59°F(15°C) or lower) is as follows.  
The compressor stops when the temperature of indoor heat  
exchanger becomes less than 36°F(2°C).  
The compressor restarts when the temperature of indoor heat  
exchanger becomes 46°F(8°C) or higher.  
When the cause of the increase in electrical current is rectified,  
the system will resume operation in the original mode.  
(A)  
Cooling Dry  
Peak current cut-off trips  
Hz down  
22.5  
14.0  
47  
10. TROUBLESHOOTING  
10-1. Precautions before Performing Inspection or Repair  
After checking the self-diagnostics monitor, turn the power OFF before starting inspection or repair.  
High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). They retain an electrical charge  
(charging voltage DC 310V) even after the power is turned OFF, and some time is required for the charge to dissipate. Be  
careful not to touch any electrified parts before the controller LED (red) turns OFF.  
If the outdoor controller is normal, approximately 30 seconds will be required for the charge to dissipate. However, allow at  
least 5 minutes for the charge to dissipate if there is thought to be any trouble with the outdoor controller.  
10-2. Method of Self-Diagnostics  
< Clock display >  
Follow the procedure below to perform detailed trouble diagnostics.  
Test run mode  
Self-diagnostics mode  
NOTE  
1:If the operation lamp blinks every 0.5 seconds immediately when the  
power is turned ON, there is an external ROM (OTP data) failure on the  
indoor circuit board, or a ROM socket insertion problem, or the ROM  
has not been installed.  
2:The failure mode is stored in memory even when the power is not ON.  
Follow the procedure below to perform diagnostics.  
PROCEDURE  
ON/OFF  
operation  
button  
ION  
button  
After turning on power to the air conditioner, use the remote controller and  
follow the steps below to execute self-diagnostics.  
Step 1: Press and hold the remote controller ION button and 1 HR TIMER  
button. At the same time, press the ACL (reset) button. Use a  
pointed object such as the tip of a pen to press the ACL button.  
When this has been done, "oP-1" (test run) appears, blinking, in  
the remote controller clock display area.  
1HR.  
TIMER  
button  
Step 2: Next, press the 1 HR TIMER button once to change the display  
from "oP-1" to "oP-3" (self-diagnostics). (The display continues to  
blink.)  
Step 3: Finally press the ON/OFF button to engage self-diagnostics mode.  
• The self-diagnostics function utilizes the 3 indicator lamps on the main  
unit, in combinations of ON lamps, blinking lamps, and OFF lamps, to  
report the existence of sensor trouble or a protective operation. (The  
lamps blink or remain ON for 5 seconds, then turn OFF for 2 seconds.)  
Self-diagnostics is completed when the buzzer sounds 3 short beeps.  
• A maximum of 3 self-diagnostics reports are displayed, for 5 seconds  
each, beginning with the most recent report. Following this display the  
lamps turn OFF. In order to view the self-diagnostics results again,  
press the ON/OFF button again.  
ACL  
(Reset)  
button  
• The 3 lamps remain OFF if no trouble has occurred.  
<IMPORTANT> After self-diagnostics is completed, be sure to press the  
ACL (reset) button to return to normal mode. The air  
conditioner will not operate if this is not done.  
48  
(1) Self-diagnostics Lamps  
INDOOR UNIT  
(1) OPERATION lamp  
(2) TIMER lamp  
(3) QUIET lamp  
ION lamp  
OPERATION button  
REMOTE CONTROL receiver  
Since the indications cover various units, the corresponding parts listed below may not be present in some models.  
.... .... ....  
Indication on indoor unit  
OFF  
Blinking  
ON (Illuminated)  
Quiet  
(3)  
Timer  
(2)  
Operation  
(1)  
Code  
S01  
S02  
S03  
Diagnostics item  
Room temperature sensor failure  
Indoor heat exchanger sensor failure  
Humidity sensor failure  
Diagnostics contents  
(1) Sensor open circuit or short circuit  
(2) Contact failure at connector or open circuit at terminal crimping location  
(short-circuit detection only for the humidity sensor)  
(3) Indoor/outdoor circuit board failure  
Compressor temperature sensor failure  
S04  
S05  
(1) Sensor open circuit or short circuit  
(2) Contact failure at connector or open circuit at terminal crimping location  
(3) Outdoor circuit board failure  
Outdoor heat exchanger sensor failure  
Outdoor air temperature sensor failure  
S06  
S07  
E01  
Outdoor electrical current detection  
failure  
Outdoor circuit board failure  
(1) Mis-wiring (2) AC power failure (3) Blown fuse (4) Power relay failure  
(5) Indoor or outdoor circuit board failure  
Indoor/outdoor communications failure  
(serial communications)  
(1) HIC or power Tr failure (2) Outdoor fan does not turn. (3) Instantaneous power outage  
(4) Service valve not opened. (5) Outdoor fan blocked. (6) Continuous overload operation  
(7) Compressor failure (8) Outdoor circuit board failure  
• HIC circuit failure  
• Power Tr (transistor) circuit failure  
E02  
Outdoor unit external ROM (OTP data)  
failure  
(1) External ROM data failure (2) Outdoor circuit board failure  
E03  
E04  
E05  
(1) Instantaneous power outage (2) HIC or power transistor failure  
(3) Outdoor circuit board failure  
Peak current cut-off  
PAM circuit failure  
Active circuit failure  
(1) Outdoor circuit board failure (2) Outdoor power supply voltage failure  
Compressor discharge overheat  
prevention activated.  
(1) Electric expansion valve failure (2) Capillaries choked (3) Shortage of refrigerant  
(4) Continuous overload operation (5) Outdoor fan does not rotate (6) Outdoor circuit board failure  
E06  
E07  
Indoor fan operating failure  
(1) Fan motor failure (2) Contact failure at connector (3) Indoor circuit board failure  
4-way valve switching failure  
Indoor zero-cross failure  
(1) 4-way valve failure (heat pump model only)  
(2) Outdoor circuit board failure  
E08  
E09  
E10  
E11  
No-refrigerant protection  
(1) Service valve not opened. (2) Shortage of refrigerant  
DC compressor drive circuit failure  
Outdoor fan operating failure  
(1) Open phase (2) Outdoor circuit board failure  
(1) Fan motor failure (2) Contact failure at connector (3) Outdoor circuit board failure  
Outdoor system communications failure  
Outdoor high-pressure SW  
OLR operation  
Outdoor power supply open phase  
Outdoor coil freezing  
(1) Mis-wiring (2) Blown fuse (3) Power relay failure (4) Open phase  
(5) Outdoor circuit board failure (6) Compressor failure  
E12  
E13  
Freeze-prevention operation activated.  
(1) Indoor fan system failure (2) Shortage of refrigerant (3) Low-temperature operation  
49  
(2) If the self-diagnostics function fails to operate  
Check the indoor unit.  
No indicators illuminate and the  
indoor fan does not rotate.  
Check the power voltage.  
Blown  
Is the fuse blown?  
Normal  
Replace the circuit  
board or the fuse.  
Replace the controller.  
50  
10-3. Checking the Indoor and Outdoor Units  
(1) Checking the indoor unit  
No.  
Control  
Check items (unit operation)  
The rated voltage must be present between inter-unit wirings 1 and 2.  
1
Use the remote controller to operate the  
unit in "TEST run" mode. To determine  
whether the mode is currently in  
"TEST run" mode, check the 3 indicator  
lamps on the unit. If all 3 are blinking,  
the current mode is "TEST run."  
Connect a 5 k ohm resistor between inter-unit wirings 2 and 3. When the  
voltage at both ends is measured, approximately 12 to 15V DC must  
be output and the multimeter pointer must bounce once every 8  
seconds.  
Or instead of measuring the voltage, you can insert an LED jig and  
check that the LED flickers once every 8 seconds.  
If there are no problems with the above, then check the outdoor unit.  
For the "Test run" procedure, refer to 7.4" How to Test Run the Air Conditioner".  
(2) Checking the outdoor unit  
No.  
Control  
Check items (unit operation)  
1
Apply the rated voltage between outdoor  
unit terminals 1 and 2.  
The control panel LED (red) must illuminate.  
2
Short-circuit the outdoor unit COM terminal  
to the T-RUN terminal.  
The compressor, fan motor, and 4-way valve must all turn on.  
If there are no problems with the above, then check the indoor unit.  
TEST/T-RUN terminals  
Using the TEST/T-RUN terminals  
T-RUN  
: Test run (compressor and fan motor turn ON).  
TEST/MV : Compresses time to 1/60th (accelerates  
operation by 60 times faster than normal).  
(TEST)/MV T-RUN COM  
(3) Checking the serial communications  
....  
....  
....  
Illuminated  
OFF  
Blinking  
Control 1  
Control 2  
Short-circuit terminals 2 and 3 on  
the outdoor unit terminal plate.  
Short-circuit terminals 2 and 3 on  
the indoor unit terminal plate.  
Initial self-diagnostics  
Probable location of malfunction  
Quiet  
Timer  
Operation  
Quiet  
Timer  
Operation  
Quiet  
Timer  
Operation  
( 3 )  
( 2 )  
( 1 )  
( 3 )  
( 2 )  
( 1 )  
( 3 )  
( 2 )  
( 1 )  
Indoor unit circuit board failure  
Outdoor unit circuit board failure  
Failure (open circuit, contact failure, etc.)  
in the inter-unit wirings  
Outdoor unit circuit board failure  
Turn the power OFF before performing short circuiting procedures.  
Refer to the previous pages when performing system self-diagnostics.  
So that the check can be made quickly, indicators blink at first communication after power ON.  
Before performing the above checks, perform “TEST run” operation, and check that the rated voltage is output to terminals 1 and 2  
on the outdoor unit. If it is not output, there is a failure related to the indoor unit power.  
51  
10-4. Trouble Diagnosis of Fan Motor  
10-4-1. Indoor Fan Motor  
This indoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil  
resistance, and the following procedure should be used to check the motor.  
To perform diagnosis, operate the unit in cooling mode with indoor fan speed "High". Next, make sure that the  
indoor unit receive the signals from the remote controller when the ON/OFF operation button is pressed.  
Important:  
(A) Turn OFF the power before connecting or disconnecting the motor connectors.  
(B) When performing voltage measurement at the indoor controller connector for (3) in the table  
below, the DC motor will trip and voltage output will stop approximately 1 minute after operation  
is started. For this reason, to measure the voltage again, turn OFF the unit once using the  
remote controller, and then start the air conditioner again.  
[Trouble symptom 1] The fan does not stop when the unit stops. Indoor unit controller trouble.  
[Trouble symptom 2] The fan motor does not rotate when the unit is operating.  
(Diagnostic procedure)  
* Disconnect the motor connectors and measure the voltage at the DC motor connectors on the indoor  
unit controller (3 locations).  
Measurement location  
Normal value  
DC 230 V or more  
DC 14 V or more  
(1) Vm-Gnd: Between pin 1 and pin 3  
(2) Vcc-Gnd: Between pin 4 and pin 3  
(3) Vs-Gnd: Between pin 5 and pin 3  
Fluctuation between DC 1.0 to 4.3 V  
(Diagnostic results)  
All of the above measured values are normal. Fan motor trouble (Replace the motor.)  
Any one of the above measured values is not normal. Indoor unit controller trouble (Replace the controller .)  
(Reference)  
DC motor connector pin arrangement  
Pin 1: Vm (red)  
Pin 2: Not used  
Pin 3: Gnd (black)  
Pin 4: Vcc (white)  
Pin 5: Vs (yellow)  
Pin 6: PG (blue)  
[Trouble symptom 3] Motor rotates for some time (several seconds), but then quickly stops, when the indoor unit  
operates.  
(There is trouble in the system that provides feedback of motor rotation speed from the  
motor to the indoor unit controller.)  
[Trouble symptom 4] Fan motor rotation speed does not change during indoor unit operation.  
[Trouble symptom 5] Fan motor rotation speed varies excessively during indoor unit operation.  
(Remedy for symptom 3 to 5)  
It is not possible to identify whether the trouble is indoor unit controller trouble or motor trouble.  
Therefore, first replace the indoor unit controller, then (if necessary) replace the DC motor.  
52  
10-4-2. Outdoor Fan Motor  
This outdoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil  
resistance, and the following procedure should be used to check the motor.  
To perform diagnosis, follow the instructions in "(2) Checking the Outdoor Unit" on the previous page and set  
the outdoor unit to Test Run mode (compressor ON, outdoor fan motor ON).  
Important:  
(A) Turn OFF the power before connecting or disconnecting the motor connectors.  
(B) When performing voltage measurement at the outdoor controller connector for (3) in the table  
below, the DC motor will trip and voltage output will stop approximately 10 seconds after  
operation is started. For this reason, to measure the voltage again, first turn OFF the outdoor  
unit power, then follow the instructions in "Checking the Outdoor Unit" and again set the unit to  
Test Run mode.  
[Trouble symptom 1] The fan does not stop when the outdoor unit stops. Outdoor unit controller trouble  
[Trouble symptom 2] The fan motor does not rotate when the outdoor unit is operating.  
(Diagnostic procedure)  
* Disconnect the motor connectors and measure the voltage at the DC motor connectors on the outdoor  
unit controller (3 locations).  
Measurement location  
Normal value  
(1) Vs-Gnd: Between pin 1 and pin 4  
(2) Vcc-Gnd: Between pin 5 and pin 4  
(3) Vsp-Gnd: Between pin 7 and pin 4  
DC 230V or more  
DC 14V or more  
After fluctuating 4 times between DC 1.0 to 4.3V  
(1 sec. ON) and DC 0 V (1 sec. OFF), the DC  
motor trips.  
(Diagnostic results)  
All of the above measured values are normal. Fan motor trouble (Replace the motor.)  
Any one of the above measured values is not normal. Outdoor unit controller trouble  
(Replace the controller .)  
(Reference)  
DC motor connector pin arrangement  
Pin 1: Vs (white)  
Pin 2: Not used  
Pin 3: Not used  
Pin 4: Gnd (black)  
Pin 5: Vcc (red)  
Pin 6: FG (blue)  
Pin 7: Vsp (yellow)  
[Trouble symptom 3] Motor rotates for some time (several seconds), but then quickly stops, when the outdoor  
unit operates.  
(There is trouble in the system that provides feedback of motor rotation speed from the  
motor to the outdoor unit controller.)  
[Trouble symptom 4] Fan motor rotation speed does not change during outdoor unit operation.  
[Trouble symptom 5] Fan motor rotation speed varies excessively during outdoor unit operation.  
(Remedy for symptom 3 to 5)  
It is not possible to identify whether the trouble is outdoor unit controller trouble or motor trouble.  
Therefore, first replace the outdoor unit controller, then (if necessary) replace the DC motor.  
53  
10-5. Noise Malfunction and Electromagnetic Interference  
An inverter A/C operates using pulse signal control and high frequencies. Therefore, it is susceptible to the effects of external  
noise, and is likely to cause electromagnetic interference with nearby wireless devices.  
A noise filter is installed for ordinary use, preventing these problems. However, depending on the installation conditions, these  
effects may still occur. Please pay attention to the points listed below.  
(1) Noise malfunction  
This refers to the application of high-frequency noise to the signal wires, resulting in abnormal signal pulses and malfunction.  
Locations most susceptible to noise  
Trouble  
Correction  
1. Locations near broadcast stations where  
there are strong electromagnetic waves  
Either of the following trouble may occur.  
(The fundamental concept is to make the  
system less susceptible to noise.)  
1. The unit may stop suddenly during  
operation.  
2. Locations near amateur radio (short wave)  
stations  
- Insulate for noise or  
distance from the noise source. -  
2. Indicator lamps may flicker.  
3. Locations near electronic sewing machines  
and arc-welding machines  
1. Use shielded wires.  
2. Move unit away from the noise source.  
(2) Electromagnetic interference  
This refers to noise generated by high-speed switching of the microcomputer and compressor. This noise radiates through  
space and returns to the electric wiring, affecting any wireless devices (televisions, radios, etc.) located nearby.  
Locations most susceptible to noise  
Trouble  
Correction  
1. A television or radio is located near the  
A/C and A/C wiring.  
1. Noise appears in the television picture, 1. Select a separate power source.  
or the picture is distorted.  
2. Keep the A/C and A/C wiring at least 1 meter  
2. The antenna cable for a television or  
radio is located close to the A/C and A/C  
wiring.  
2. Static occurs in the radio sound.  
away from wireless devices and antenna cables.  
3. Change the wireless device’s antenna to a high-  
sensitivity antenna.  
3. Locations where television and radio  
signals are weak.  
4. Change the antenna cable to a BS coaxial cable.  
5. Use a noise filter (for the wireless device).  
6. Use a signal booster.  
54  
11. CHECKING ELECTRICAL COMPONENTS  
11-1. Measurement of Insulation  
Ground wire  
Resistance  
Clip  
The insulation is in good condition if the resistance  
exceeds 1M ohm.  
Probe  
11-1-1. Power Supply Cord  
Insulation  
tester  
Clamp the grounding wire of power cord with the lead  
Fig. 1  
clip of the insulation resistance tester and measure the  
resistance by placing a probe on either of the two  
power wires. (Fig. 1)  
Terminal plate  
Then also measure the resistance between the  
grounding and other power terminals. (Fig. 1)  
Probe  
11-1-2. Indoor Unit  
Clamp an aluminum plate fin or copper tube with the  
lead clip of the insulation resistance tester and  
measure the resistance by placing a probe on each  
terminal screw on the terminal plate. (Fig. 2)  
Note that the ground line terminal should be skipped  
for the check.  
Clip  
Copper  
tube or  
Insulation  
tester  
metallic part  
11-1-3. Outdoor Unit  
Fig. 2  
Clamp a metallic part of the unit with the lead clip of  
the insulation resistance tester and measure the  
resistance by placing a probe on each terminal screw  
where power supply lines are connected on the  
terminal plate. (Fig. 2)  
Probe  
Clip  
11-1-4. Measurement of Insulation  
Resistance for Electrical Parts  
Copper  
tube or  
Disconnect the lead wires of the desired electric part  
from terminal plate, capacitor, etc. Similarly disconnect  
the connector. Then measure the insulation resistance.  
(Figs. 3 and 4)  
metallic part  
Insulation  
tester  
Fig. 3  
NOTE  
From fan motor,  
compressor and  
other parts  
Refer to Electric Wiring Diagram.  
If the probe cannot enter the poles because the hole is  
too narrow then use a probe with a thinner pin.  
Probe  
Metallic  
part  
Clip  
Insulation  
tester  
Fig. 4  
55  
11-2. Checking Continuity of Fuse  
on PCB Ass'y  
Fuse  
Remove the PCB Ass'y from the electrical  
component box. Then pull out the fuse from the PCB  
Ass'y. (Fig. 5)  
Check for continuity using a multimeter as shown in  
Fig. 6.  
PCB Ass'y  
Fig. 5  
Fuse  
Fig. 6  
56  
12. REFRIGERANT R410A:  
SPECIAL PRECAUTIONS WHEN SERVICING UNIT  
12-1. Characteristics of New Refrigerant R410A  
12-1-1. What is New Refrigerant R410A?  
R410A is a new refrigerant that contains two types of pseudo-non-azeotropic refrigerant mixture. Its  
refrigeration capacity and energy efficiency are about the same level as the conventional refrigerant, R22.  
12-1-2. Components (mixing proportions)  
HFC32 (50%) / HFC125 (50%)  
12-1-3. Characteristics  
Less toxic, more chemically stable refrigerant  
The composition of refrigerant R410A changes whether it is in a gaseous phase or liquid phase. Thus, when  
there is a refrigerant leak the basic performance of the air conditioner may be degraded because of a change in  
composition of the remaining refrigerant. Therefore, do not add new refrigerant. Instead, recover the  
remaining refrigerant with the refrigerant recovery unit. Then, after evacuation, totally recharge the specified  
amount of refrigerant with the new refrigerant at its normal mixed composition state (in liquid phase).  
When refrigerant R410A is used, the composition will differ depending on whether it is in gaseous or liquid  
phase, and the basic performance of the air conditioner will be degraded if it is charged while the refrigerant is in  
gaseous state. Thus, always charge the refrigerant while it is in liquid phase.  
Ether-type oil is used for compressor oil for R410A-type units, which is different  
CAUTION  
from the mineral oil used for R22. Thus more attention to moisture prevention and  
faster replacement work compared with conventional models are required.  
57  
12-2. Checklist before Servicing  
Use a clutch-type flare tool for R410A or the conventional flare tool. Note that sizes of the resultant flares differ  
between these two tools. Where a conventional flare tool is used, make sure to observe A Specification (amount of  
extrusion) by using the flare spacer.  
Specification A  
Diameter of tube D  
Flare tool for R410A  
Conventional flare tool (for R22)  
Dia.1/4" (6.35 mm)  
Dia.3/8" (9.52 mm)  
Dia.1/2" (12.7 mm)  
Dia.5/8" (15.2 mm)  
0 to 0.0196"  
0.0472"  
(0 to 0.5 mm)  
(1.2 mm)  
Size of flare  
Spacer  
D
D
A
A
Flare tool for R410A  
Conventional flare tool (R22)  
Tubing precautions  
Refrigerant R410A is more easily affected by dust or moisture compared with R22, thus be sure to temporarily  
cover the ends of the tubing with caps or tape prior to installation.  
Never use 0.0276" (0.7 mm)-thick copper tubing or tubing which is less than 0.0315" (0.8 mm) in thickness, since  
air conditioners with R410A are subject to higher pressure than those using R22 and R407C.  
No addition of compressor oil for R410A  
No additional charge of compressor oil is permitted.  
No use of refrigerant other than R410A  
Never use a refrigerant other than R410A.  
If refrigerant R410A is exposed to fire  
Through welding, etc., toxic gas may be released when R410A refrigerant is exposed to fire. Therefore, be sure  
to provide ample ventilation during installation work.  
Caution in case of R410A leak  
Check for possible leak points with the special leak detector for R410A. If a leak occurs inside the room,  
immediately provide thorough ventilation.  
58  
12-3. Tools Specifically for R410A  
For servicing, use the following tools for R410A  
Tool Distinction  
Gauge manifold  
Tool Name  
Charging hose  
Gas leak detector  
Refrigerant cylinder  
Charging cylinder  
Refrigerant recovery unit  
Vacuum pump with anti-reverse flow (*1)  
(Solenoid valve-installed type, which prevents oil from flowing back into the  
unit when the power is off, is recommended.)  
Vacuum pump (*2)...can be used if the following adapter is attached.  
Vacuum pump adapter (reverse-flow prevention adapter) (*3).  
(Solenoid valve-installed adapter attached to a conventional vacuum pump.)  
Electronic scale for charging refrigerant  
Flare tool  
Tools specifically for R410A  
Bender  
Tools which can be com-  
monly used for R22,  
R407C, and R410A  
Torque wrench  
Cutter, reamer  
Welding tool, nitrogen gas cylinder  
The above tools specifically for R410A must not be used for R22 and R407C.  
Doing so will cause malfunction of the unit.  
CAUTION  
For the above vacuum pump (*1, *2) and vacuum pump adapter (*3), those for  
R22-type units can be used for R410A-type. However, they must be used  
exclusively for R410A and never alternately with R22 and R407C.  
To prevent other refrigerants (R22, R407C) from being mistakenly charged to this unit, shape and external  
diameter of the service port screw has been altered.  
<External diameter of service port> R410A : 5/16"  
R22, R407C : 1/4"  
12-4. Tubing Installation Procedures  
When the tubes are connected, always apply HAB oil on the flare portions to improve the sealing of tubing.  
The following is the HAB oil generally used:  
Esso: ZERICE S32  
NOTE  
For details on tubing installation procedures, refer to the installation manuals attached to the indoor  
unit and outdoor unit.  
59  
12-5. In Case of Compressor Malfunction  
Should the compressor malfunction, be sure to make the switch to a replacement  
compressor as quickly as possible.  
CAUTION  
Use only the tools indicated exclusively for R410A. See "12-3. Tools  
Specifically for R410A."  
12-5-1. Procedure for Replacing Compressor  
(1) Recovering refrigerant  
Any remaining refrigerant inside the unit should not be  
released to the atmosphere, but recovered using the  
refrigerant recovery unit for R410A.  
(1) Recover refrigerant  
OK  
Do not reuse the recovered refrigerant, since it will contain  
impurities.  
(2) Replacing Compressor  
(2) Replace compressor  
OK  
Soon after removing seals of both discharge and suction  
tubes of the new compressor, replace it quickly.  
(3) Checking for sealing  
Use nitrogen gas for the pressurized gas, and never use a  
refrigerant other than R410A. Also do not use oxygen or  
any flammable gas.  
(3) Check for sealing  
OK  
(4) Evacuation  
Use a solenoid valve-installed vacuum pump so that  
even if power is cut off in the middle of evacuation of air  
due to a power interruption, the valve will prevent the  
pump oil from flowing back.  
(4) Evacuation  
OK  
The equipment may be damaged if moisture remains in  
the tubing, thus carry out the evacuation thoroughly.  
When using a vacuum pump with exhaust air volume more  
than 0.883 cu.ft./min. and ultimate vacuum pressure rate  
of 50 micron Hg.  
(5) Recharge  
Standard time for evacuation  
Length of tubing  
Less than 33 ft. (10 m)  
More than 33 ft. (10 m)  
Evacuation time  
More than 10 minutes  
More than 15 minutes  
60  
(5) Recharging  
Be sure to charge the specified amount of  
Configuration and characteristics of cylinders  
Valve  
refrigerant in liquid state using the service port  
of the wide tube service valve. The proper  
amount is listed on the unit's nameplate.  
When the entire amount cannot be charged all at  
once, charge gradually while operating the unit in  
Cooling Operation.  
Liquid  
Never charge a large amount  
CAUTION  
of liquid refrigerant at once to  
the unit. This may cause  
damage to the compressor.  
Single valve  
Charge liquid refrigerant with  
cylinder in up-side-down position.  
When charging with a refrigerant cylinder, use an  
electronic scale for charging refrigerant. In this  
case, if the volume of refrigerant in the cylinder  
becomes less than 20% of the fully-charged  
amount, the composition of the refrigerant starts  
to change. Thus, do not use the refrigerant if  
the amount in the charging cylinder is less  
than 20%.  
Fig. 1  
Valve  
Also, charge the minimum necessary amount to  
the charging cylinder before using it to charge  
the air conditioning unit.  
Example:  
Liquid  
In case of charging refrigerant to a unit requiring  
1.68 lb. (0.76 Kg) using a capacity of a 22 lb. (10  
Kg) cylinder, the minimum necessary amount for  
the cylinder is:  
Single valve (with siphon tube)  
Charge with cylinder in normal position.  
1.68 + 22 0.20 = 6.08 lb.  
(0.76 + 10 0.20 = 2.76 Kg)  
Fig. 2  
For the remaining refrigerant, refer to the  
instructions of the refrigerant manufacturer.  
NO!  
If using a charging cylinder, transfer the specified  
amount of liquid refrigerant from the refrigerant  
cylinder to the charging cylinder.  
Charging  
cylinder  
Prepare an evacuated charging cylinder  
beforehand.  
To prevent the composition  
CAUTION  
of R410A from changing,  
never bleed the refrigerant  
gas into the atmosphere  
while transferring the  
refrigerant. (Fig. 3)  
Liquid  
Open  
Refrigerant  
cylinder  
Do not use the refrigerant if the amount in the  
charging cylinder is less than 20%.  
Fig. 3  
61  
12-6. In Case Refrigerant is Leaking  
Never attempt to charge additional refrigerant when refrigerant has been leaking  
from the unit. Follow the procedure described below to locate points of leaks and  
carry out repairs, then recharge the refrigerant.  
CAUTION  
(1) Detecting Leaks  
Use the detector for R410A to locate refrigerant leak  
points.  
(1) Detect leaks  
(2) Recovering refrigerant  
Never release the gas to the atmosphere; recover  
OK  
residual refrigerant using the refrigerant recovery unit for  
R410A, instead.  
(2) Recover refrigerant  
Do not reuse the recovered refrigerant because its  
composition will have been altered.  
OK  
(3) Welding leaking points  
Confirm again that no residual refrigerant exists in the unit  
before starting welding.  
(3) Weld leaking points  
OK  
Weld securely using flux and wax for R410A.  
Prevent oxide film from forming inside the tubes utilizing  
substitution with nitrogen (N2) in the refrigerant circuit of  
the unit. Leave ends of tubes open during welding.  
(4) Checking for sealing  
(4) Check for sealing  
OK  
Use nitrogen gas for the pressurized gas, and never use  
a refrigerant other than R410A. Also do not use oxygen or  
any flammable gas.  
(5) Evacuation  
(5) Evacuation  
OK  
Use a solenoid valve-installed vacuum pump so that  
even if power is cut off in the middle of evacuation of air  
due to a power interruption, the valve will prevent the  
pump oil from flowing back.  
The equipment may be damaged if moisture remains in  
the tubing, thus carry out the evacuation thoroughly.  
(6) Recharge  
When using a vacuum pump with exhaust air volume  
more than 0.883 cu.ft./min. and ultimate vacuum pressure  
rate of 50 micron Hg.  
Standard time for evacuation  
Length of tubing  
Less than 33 ft. (10 m)  
More than 33 ft. (10 m)  
Evacuation time  
More than 10 minutes  
More than 15 minutes  
(6) Recharging  
Recharge unit in the same manner explained on the  
previous page "(5) Recharging."  
62  
12-7. Charging Additional Refrigerant  
12-7-1. When Tubes are Extended  
Observe the proper amount of refrigerant as stated in this service manual or the installation manual that came  
with the indoor unit. Charge additional refrigerant in liquid state only.  
Never charge additional refrigerant if refrigerant is leaking from the unit. Follow  
CAUTION  
instructions given in "12-6. In Case Refrigerant is Leaking" and completely carry  
out repairs. Only then should you recharge the refrigerant.  
12-8. Retro-Fitting Existing Systems  
12-8-1. Use of Existing Units  
Never use new refrigerant R410A for existing units which use R22. This will cause the air conditioner to  
operate improperly and may result in a hazardous condition.  
12-8-2. Use of Existing Tubing  
If replacing an older unit that used refrigerant R22 with a R410A unit, do not use its existing tubing. Instead,  
completely new tubing must be used.  
63  
APPENDIX INSTRUCTION MANUAL  
KS1872 + C1872  
+ CL1872  
KS2472 + C2472  
+ CL2472  
(OI-852-6-4180-800-00-0)  
64  
Features  
This air conditioner is an inverter type unit that automatically adjusts capacity as appropriate. Details on these functions  
are provided below; refer to these descriptions when using the air conditioner.  
Microprocessor Controlled Operation  
Automatic Restart Function for Power Failure  
Even when power failure occurs, preset  
programmed operation can be reactivated once  
power resumes.  
The interior compartment of the remote control unit  
contains several features to facilitate automatic  
operation, easy logically displayed for easy use.  
Simple One-touch Wireless Remote Control  
The remote control unit has several features to  
facilitate automatic operation.  
High Power Operation  
The unit operates at maximum output for 30  
minutes, regardless of the desired temperature.  
The fan speed is 1 step above “High”.  
24-Hour ON or OFF Timer  
This timer can be set to automatically turn the unit  
on or off at any time within a 24 hour period.  
Quiet Operation  
The fan rotates slower than the fan speed setting to  
provide a quieter operating sound.  
1-Hour OFF Timer  
This timer can be set to automatically turn off the  
unit at any time after one hour.  
ION Operation  
While it is operating, the unit generates negative  
ions that freshen up the air in the room.  
Night Setback  
Pressing this button changes the setting of the  
room temperature thermostat, allowing you to set  
the temperature at whatever level that you find  
comfortable.  
Anti-Mold Filter  
This unit is equipped with an anti-mold filter that  
inhibits the growth of mold and bacteria.  
Automatic and 3-step Fan Speed  
Air Clean Filter  
Auto/High/Medium/Low  
An air filter that eliminates unpleasant odors and  
cleans the air is available.  
Purchase a replacement filter at your local dealer.  
(model STK-FDXB)  
Air Sweep Control  
This function moves a flap up and down in the air  
outlet, directing air in a sweeping motion around the  
room and providing comfort in every corner.  
Auto. Flap Control  
This automatically sets the flap to the optimum  
position during cooling and drying operation.  
OI-800-2-EG  
2
Contents  
Page  
Features............................................................................................................ 2  
Product Information........................................................................................... 3  
Alert Symbols.................................................................................................... 3  
Installation Location .......................................................................................... 4  
Electrical Requirements.................................................................................... 4  
Safety Instructions............................................................................................. 4  
Names of Parts ................................................................................................. 5  
Using the Remote Control Unit ....................................................................... 10  
Operation with the Remote Control Unit ........................................................ 12  
1. Operation ............................................................................................... 12  
2. Adjusting the Fan Speed........................................................................ 13  
3. Fan Only................................................................................................. 13  
4. Night Setback Mode............................................................................... 14  
5. QUIET Mode.......................................................................................... 15  
6. HIGH POWER Mode ............................................................................. 15  
7. ION Mode............................................................................................... 15  
Special Remarks............................................................................................. 16  
Setting the Timer............................................................................................. 17  
Using the 1-Hour OFF Timer .......................................................................... 19  
Tips for Energy Saving.................................................................................... 19  
Adjusting the Airflow Direction ........................................................................ 20  
Operation without the Remote Control Unit .................................................... 21  
Care and Cleaning.......................................................................................... 21  
Troubleshooting............................................................................................... 24  
Operating Range............................................................................................. 24  
Product Information  
If you have problems or questions concerning your Air Conditioner, you will need  
the following information. Model and serial numbers are on the nameplate on the  
bottom of the cabinet.  
Model No. ______________________ Serial No. ____________________  
Date of purchase ________________________________________________  
Dealer’s address ________________________________________________  
Phone number ________________  
Alert Symbols  
The following symbols used in this manual, alert you to potentially  
dangerous conditions to users, service personnel or the appliance:  
This symbol refers to a hazard or unsafe  
practice which can result in severe  
personal injury or death.  
This symbol refers to a hazard or unsafe  
CAUTION  
practice which can result in personal injury  
or product or property damage.  
OI-800-3-EG  
3
Installation Location  
We recommend that this air conditioner be installed properly by qualified  
installation technicians in accordance with the Installation Instructions  
provided with the unit.  
Before installation, check that the voltage of the electric supply in your home or  
office is the same as the voltage shown on the nameplate.  
Do not install this air conditioner where there are fumes or flammable  
gases, or in an extremely humid space such as a greenhouse.  
Do not install the air conditioner where excessively high heat-generating  
objects are placed.  
Avoid: To protect the air conditioner from heavy corrosion, avoid installing the outdoor  
unit where salty sea water can splash directly onto it or in sulphurous air near a  
spa.  
Electrical Requirements  
1. All wiring must conform to the local electrical codes. Consult your dealer or a  
qualified electrician for details.  
2. Each unit must be properly grounded with a ground (or earth) wire or through  
the supply wiring.  
3. Wiring must be done by a qualified electrician.  
Safety Instructions  
Read this Instruction Manual carefully before using this air conditioner. If  
you still have any difficulties or problems, consult your dealer for help.  
This air conditioner is designed to give you comfortable room conditions.  
Use this only for its intended purpose as described in this Instruction  
Manual.  
Never use or store gasoline or other flammable vapor or liquid near the  
air conditioner — it is very dangerous.  
This air conditioner has no ventilator for intaking fresh air from  
outdoors. You must open doors or windows frequently when you use  
gas or oil heating appliances in the same room, which consume a lot of  
oxygen from the air. Otherwise there is a risk of suffocation in an  
extreme case.  
Do not turn the air conditioner on and off from the power mains switch.  
Use the ON/OFF operation button.  
Do not stick anything into the air outlet of the outdoor unit. This is  
dangerous because the fan is rotating at high speed.  
Do not let children play with the air conditioner.  
CAUTION  
Do not cool the room too much if babies or invalids are present.  
OI-800-4-EG  
4
Names of Parts  
Air intakes  
INDOOR UNIT  
Air outlet  
Remote control unit  
Drain hose  
Refrigerant tubes  
OUTDOOR UNIT  
Air outlet  
This illustration is based on the external view of a standard model.  
Consequently, the shape may differ from that of the air conditioner which you  
have selected.  
NOTE  
This air conditioner consists of an indoor unit and an outdoor unit. You can control  
the air conditioner with the remote control unit.  
Air Intake Air from the room is drawn into this section and passes through air filters which  
remove dust.  
Air Outlet Conditioned air is blown out of the air conditioner through the air outlet.  
Remote Control Unit The wireless remote control unit controls power ON/OFF, operation mode  
selection, temperature, fan speed, timer setting, and air sweeping.  
Refrigerant Tubes The indoor and outdoor units are connected by copper tubes through which  
refrigerant gas flows.  
Drain Hose Moisture in the room condenses and drains off through this hose.  
Outdoor (Condensing) Unit The outdoor unit contains the compressor, fan motor, heat exchanger coil, and  
other electrical components.  
OI-800-5-EG  
5
Unit Display and Operation Button  
INDOOR UNIT  
IMPORTANT  
OPERATION lamp  
TIMER lamp  
QUIET lamp  
ION lamp  
Avoid using radio equipment  
such as mobile phone near  
(within 4 ft.) the remote  
control receiver. Some radio  
equipment may cause  
QUIET  
OPERATION button  
malfunction of the unit.  
If the trouble happens,  
disconnect power and restart  
the air conditioner after a few  
minutes.  
REMOTE CONTROL receiver  
REMOTE CONTROL receiver This section picks up infrared signals from the remote control unit (transmitter).  
OPERATION button When the remote control cannot be used, pressing this button enables cooling  
operation.  
Each time this button is pressed, the operation mode changes cyclically.  
Cooling operation  
Stop  
OPERATION lamp This lamp lights when the system is in the continuous DRY (orange), COOL  
(green) and FAN (green) mode.  
TIMER lamp This lamp lights when the system is being controlled by the timer.  
QUIET lamp This lamp lights during operation in the QUIET mode.  
ION lamp This lamp lights during operation in the ION mode while the indoor unit is  
operating.  
The unit’s display lamps are dimmed during operation in the NIGHT SETBACK  
mode.  
NOTE  
OI-800-6-EG  
6
Remote Control Unit (Display)  
Displayed when transmitting data  
Displayed when indoor unit sensor  
is in use  
Displayed when setting  
temperature  
Displayed when temperature is  
shown  
Displayed when setting timer  
Displayed when the  
time display is set to  
12-hour time.  
Symbols  
(1) Operation mode  
(4) Timer  
24-hour clock with ON/OFF  
MILD DRY ..............................  
COOL.....................................  
FAN ........................................  
program Timer........................  
ON Timer................................  
OFF Timer..............................  
1-hour OFF Timer...................  
(2) Fan speed  
Automatic operation ...............  
(5) NIGHT SETBACK ..................  
HIGH .....................................  
MEDIUM.................................  
LOW.......................................  
(6) Confirmation of  
transmission...........................  
(7) Auto. fla.dication.....................  
Flap angle indication ..............  
Sweep indication....................  
(8) High power operation.............  
(9) Quiet operation.......................  
(10) ION operation.......................  
(3) Temperature setting  
60 – 86 °F  
When set to 80 °F  
temperature indication............  
OI-800-7-EG  
7
Remote Control Unit  
Sensor  
Transmitter  
(Cover closed)  
Display  
ON/OFF operation button  
1 HR. TIMER button  
ION button  
Temperature setting buttons (TEMP.)  
MODE selector button  
NIGHT SETBACK button  
HIGH POWER button  
QUIET button  
FAN SPEED selector button  
FLAP button  
ON TIME  
setting  
buttons  
Advance button  
Return button  
OFF TIME  
setting  
buttons  
Advance button  
Return button  
CLOCK button  
CANCEL button  
SENSOR button  
Time display selector button  
ACL button  
ADDRESS switch  
Temperature display  
selector button  
The illustration above pictures the remote control unit after the cover has been  
opened.  
NOTE  
Transmitter When you press the buttons on the remote control unit, the  
mark appears in  
the display to transmit the setting changes to the receiver in the air conditioner.  
Sensor A temperature sensor inside the remote control unit senses the room  
temperature.  
Display Information on the operating conditions is displayed while the remote control unit  
is switched on. If the unit is turned off, FLAP setting and FAN SPEED setting are  
not displayed.  
ION button  
: This button is for turning the negative ions generated during operation on  
and off.  
ON/OFF operation button This button is for turning the air conditioner on and off.  
1 HR. TIMER button  
(1-HOUR OFF TIMER)  
: When you press this button, regardless of whether the unit is operating or  
stopping, the unit operates for one hour and then shuts down.  
OI-800-8-EG  
8
Remote Control Unit (continued)  
Temperature setting buttons Press the  
(TEMP.) Press the  
button to increase the set temperature.  
button to reduce the set temperature.  
The temperature setting changes by 1 °C or 2 °F each time one of the TEMP.  
buttons is pressed.  
QUIET button  
: When you press this button, the fan rotates slower than the fan speed  
setting to provide a quieter operating sound.  
MODE selector button Use this button to select DRY, COOL or FAN mode.  
(DRY)  
(COOL)  
(FAN)  
: The air conditioner reduces the humidity in the room.  
: The air conditioner makes the room cooler.  
: The air conditioner works only as a circulation fan.  
FAN SPEED selector button  
: The air conditioner automatically decides the fan speeds.  
: High fan speed  
: Medium fan speed  
: Low fan speed  
NIGHT SETBACK button For details, see “4. Night Setback Mode”. When you press this button in the DRY  
or COOL mode, the mark appears in the display, and the remote control unit  
will automatically adjust the set temperature to save energy.  
FLAP button Press this button either to select the setting of the airflow direction to the auto.  
flap in each mode or one of the six possible positions manually or to select the  
sweep function which moves the flap up and down automatically.  
: Auto flap setting: If selected in a cooling or dry operation, the flap is set at  
position (7) in the following chart.  
: The airflow direction can be set manually. (six positions)  
: The flap moves up and down automatically.  
When you press the FLAP button, the air flow direction will be changed one by  
one as follows.  
NOTE  
SWEEP  
HIGH POWER button  
: If this button is pressed during DRY, COOL or FAN operation, the unit  
operates at maximum output for 30 minutes, regardless of the desired  
temperature.  
The fan speed is 1 step above “High”.  
ON TIME/OFF TIME setting No display: The timer does not operate.  
buttons  
: The air conditioner starts at the set time.  
: The air conditioner stops at the set time.  
: The air conditioner stops and starts, or starts and stops, at the  
set times every day. For details, see “Setting the Timer”.  
OI-800-9-EG  
9
Remote Control Unit (continued)  
SENSOR button When you press this button (use a small-tipped object such as a ballpoint pen),  
the  
mark will appear at the display. And the room temperature is detected by  
the sensor which is built into the indoor unit and the air conditioner is controlled  
accordingly.  
If the remote control is located near a heat source, such as a space heater or in direct  
sunlight, press the SENSOR button to switch to the sensor on the indoor unit.  
NOTE  
Temperature Display Selector button This switches the temperature display between °C and °F.  
Time Display Selector button This switches the time display between 24-hour time and 12-hour time.  
ACL button (ALL CLEAR) Puts the remote control unit into pre-operation status. Always press this button  
after replacing the batteries.  
ADDRESS switch  
The address switch changes to prevent mixing of signals from remote control  
units when two air conditioners are installed next to each other. Normally, the  
address switch is set to A. For more information, please contact the dealer  
where you made the purchase.  
Normally, the tabs on the remote control unit should not be bent.  
The remote control unit sends the temperature signal to the air conditioner regularly at five minute  
intervals. If the signal from the remote control unit stops for more than 15 minutes due to the loss of the  
remote control unit or other trouble, the air conditioner will switch to the temperature sensor which is built  
into the indoor unit and control the room temperature. In these cases, the temperature around the remote  
control unit may differ from the temperature detected at the air conditioner’s position.  
NOTE  
Using the Remote Control Unit  
How to Install Batteries  
1. Slide the cover in the direction  
indicated by the arrow and remove it.  
2. Install two AAA alkaline batteries.  
Make sure the batteries point in the  
direction marked in the battery  
compartment.  
3. Use a thin object such as the tip of a  
pen to press the ACL button.  
ACL button  
The batteries last about six months, depending on how much you use  
the remote control unit. Replace the batteries when the remote control  
unit’s display fails to light, or when the remote control cannot be used to  
change the air conditioner’s settings.  
NOTE  
Use two fresh leak-proof type-AAA alkaline batteries.  
In replacing batteries, follow the instructions as mentioned in the sub-  
section “How to Install Batteries”.  
If you do not use the remote control unit more than 1 month, take out the  
batteries.  
OI-800-10-EG  
10  
Using the Remote Control Unit (continued)  
How to Use the Remote When using the remote control unit, always point the unit’s transmitter head  
Control Unit directly at the air conditioner’s receiver.  
Air conditioner  
(Indoor unit)  
Receiver  
Remote control  
unit  
(Transmitter head)  
Remote Control Unit The remote control unit may be operated either from a non-fixed position or from  
Installation Position a wall-mounted position. To ensure that the air conditioner operates correctly, DO  
NOT install the remote control unit in the following places:  
DO NOT  
In direct sunlight  
Behind a curtain or other places where it is covered  
More than 26 feet (8 m) away from the air conditioner  
In the path of the air conditioner’s airstream  
Where it may become extremely hot or cold  
Where it may be subject to electrical or magnetic noise  
Where there is an obstacle between the remote control unit and air conditioner  
(since a check signal is sent from the remote control unit every 5 minutes)  
Mounting the Remote Control Before mounting the remote control unit, press the ON/OFF operation button at  
Unit the mounting location to make sure that the air conditioner operates from that  
location. The indoor unit should make a beeping sound to indicate that it has  
received the signal.  
Rear side  
Remote control  
unit mount  
Press  
Mounting screws  
5/32 x 5/8" (4 x 16 mm)  
(included)  
Hole  
Set in  
place  
To prevent loss of the remote control unit,  
you can connect the remote control unit to  
the mount by passing a string through the  
remote control unit and attachment hole.  
To take out the remote control unit, pull it forward.  
When Holding the Remote  
Control Unit  
When using the remote control unit and during air conditioner operation, the  
transmitter on the remote control unit should be pointed toward the receiver on  
the indoor unit.  
Make sure that there are no objects between the remote control unit and  
receiver which could block the signal.  
OI-800-11-EG  
11  
Operation with the Remote Control  
Unit  
1. Operation  
STEP 2  
STEP 3  
STEP 1  
STEP 4  
STEP 5  
Check that the circuit breaker on the power panel is turned on.  
Press the setting buttons as described below and change the settings as desired.  
NOTE  
STEP 1  
Press the MODE selector button and select the desired mode.  
For dehumidifying operation  
For cooling operation  
For fan only operation  
STEP 2  
STEP 3  
To start the air conditioner, press the ON/OFF operation button.  
Press the TEMP. setting buttons to change the temperature  
setting to the desired temperature.  
Adjustable temperature range:  
30 °C max.  
16 °C min.  
or  
86 °F max.  
60 °F min.  
STEP 4  
STEP 5  
Set the FAN SPEED selector button to the setting you want.  
Press the FLAP button and set the airflow direction as desired.  
(Refer to “Adjusting the Airflow Direction” on page 20.)  
To stop the air conditioner, press the ON/OFF operation button again.  
OI-800-12-EG  
12  
Operation with the Remote Control Unit (continued)  
Choose the best position in the room for the remote control unit, which also  
acts as the sensor for room comfort and transmits the operating instructions.  
Once you’ve found this best position, always keep the remote control unit  
there.  
NOTE  
This appliance has a built-in 5-minute time delay circuit to ensure reliable  
operation. When the operation button is pressed, the compressor will start  
running within three minutes. In the event of power failure, the unit will stop.  
2. Adjusting the Fan Speed  
A. Automatic fan speed  
Simply set the FAN SPEED selector button to the  
position.  
This automatically sets the best fan speed for the room temperature.  
B. Manual fan speed  
3. Fan Only  
If you want to adjust fan speed manually during operation, just set the FAN  
SPEED selector button as desired. [  
,
, or  
]
STEP 2  
STEP 1  
STEP 3  
If you want to circulate air without any temperature control, follow these steps:  
STEP 1  
STEP 2  
STEP 3  
Press the MODE selector button to switch to the fan mode  
Press the ON/OFF operation button.  
.
Press the FAN SPEED selector button to select the fan speed of  
your choice ( or ).  
,
OI-800-13-EG  
13  
Operation with the Remote Control Unit (continued)  
4. Night Setback Mode  
Night Setback Mode is used for saving energy.  
Press the NIGHT SETBACK button while operation.  
The  
mark appears in the display.  
To release the night setback function, press the NIGHT SETBACK button again.  
In Cooling and DRY  
Mode: ( and  
When the night setback mode is selected, the air conditioner automatically  
raises the temperature setting 2 °F when 30 minutes have passed after the  
selection was made, and then another 2 °F after another 30 minutes have  
passed, regardless of the indoor temperature when night setback was  
selected. This enables you to save energy without sacrificing comfort. This  
function is convenient when gentle cooling is needed.  
)
2 °F  
Setting  
temperature  
2 °F  
30 min.  
30 min.  
Press the NIGHT  
SETBACK button  
Time  
OI-800-14-EG  
14  
Operation with the Remote Control Unit (continued)  
5. QUIET Mode  
QUIET Mode is used to reduce the fan sound of the indoor unit.  
Press the QUIET button.  
The  
mark appears in the display.  
To cancel, press QUIET button again.  
In QUIET Mode, the fan rotates at a slower speed than the fan speed setting.  
If the unit is already operating with a very low airflow, the fan sound may not  
change even if the QUIET button is pressed.  
6. HIGH POWER Mode  
HIGH POWER mode can be used to increase the output of the indoor unit for all  
operation modes.  
Press the HIGH POWER button.  
The  
mark appears in the display.  
To cancel, press HIGH POWER button again.  
When the HIGH POWER button is pressed, the unit operates at maximum  
output for 30 minutes, regardless of the desired temperature. The fan speed is  
1 step above “High”.  
QUIET Mode and HIGH POWER Mode cannot be used at the same time.  
• Depending on the operating conditions, the fan speed may be  
increased by a small amount only.  
NOTE  
7. ION Mode  
The ION mode is used during operation to generate negative ions that freshen up  
the air in the room.  
Press the ION button.  
The  
mark appears in the display.  
To cancel, press ION button again.  
The indoor unit’s ION lamp lights up while negative ions are being generated.  
ION “on” is the remote control unit’s initial setting.  
The negative ions are generated from the negative ion generator.  
OI-800-15-EG  
15  
Special Remarks  
‘‘DRY’’ ( ) Operation  
How it works?  
Once the room temperature reaches the level that was set, the unit’s operation  
frequency is changed automatically.  
During DRY operation, the fan speed automatically runs at lower speed for  
providing a comfortable breeze.  
‘‘DRY’’ operation is not possible if the indoor temperature is 59 °F or less.  
Cooling ( ) Operation  
Sometimes the indoor unit may not get to the set fan speed such as LOW and  
QUIET under cool operation at very low outdoor temperatures due to the  
indoor unit being protected from ice or frost when combined with the outdoor  
unit for Low Ambient Cooling models.  
In the event of power failure, the unit will stop. When the power is resumed,  
the unit will restart automatically within five minutes by the remote control unit.  
Power failure during  
operation  
Clicking Sound  
Clicking sound is heard from  
the air conditioner  
In cooling operation, any plastic parts may shrink due to a sudden  
temperature change. In this event, a clicking sound may occur. This is normal,  
and the sound will soon disappear.  
The remote control unit sends the setting condition to the air conditioner  
regularly at five minute intervals.  
Remote Control Unit  
OI-800-16-EG  
16  
Setting the Timer  
In the descriptions below, the following settings are used for the temperature and  
time indicator selector button on the bottom front section of the remote control.  
NOTE  
Temperature: °F  
Time: AM, PM  
(Example) To set to 10:30 pm.  
1. How to set the present  
time  
Operation  
Indication  
1. Press the CLOCK button once if  
The time indication alone flashes.  
the time indicator is not flashing.  
2. Press the Advance, Return ( ,  
) button until PM 10:30 is  
displayed.  
The time can be set in 1-minute  
increments. Holding down the button  
advances the time rapidly in 10-minute  
increments.  
3. Press the CLOCK button again.  
This completes the setting of the  
current time.  
(Example) To stop the air conditioner at 11:00 am.  
2. How to set the OFF time  
1. Press the OFF TIME setting  
The timer  
indication is displayed,  
button once.  
and the present OFF time is shown.  
2. Press the Advance, Return ( ,  
) button until AM 11:00 is  
displayed.  
The timer indication blinks.  
The time can be set in 10-minute  
increments. Holding down the button  
advances the time rapidly in 10-minute  
increments.  
3. Wait a few seconds, and then the The timer  
indication stops  
setting is complete.  
blinking and the present time is  
displayed.  
OI-800-17-EG  
17  
Setting the Timer (continued)  
(Example) To start operation at 7:10 am.  
3. How to set the ON time  
Operation  
Indication  
1. Press the ON TIME setting  
The timer  
indication is displayed,  
button once.  
and the present ON time is shown.  
2. Press the Advance, Return ( ,  
) button until AM 7:10 is  
displayed.  
The timer  
indication blinks.  
The time can be set in 10-minute  
increments. Holding down the button  
advances the time rapidly in 10-minute  
increments.  
3. Wait a few seconds, and then  
The timer  
indication stops  
the setting is complete.  
blinking and the present time is  
displayed.  
(Example) To start operation at 7:10 am. and stop the air conditioner at 11:00 am.  
4. How to set DAILY ON/OFF  
REPEAT timer  
10:30 pm.  
Present time  
7:10 am.  
ON  
11:00 am.  
OFF  
1. Set the timer ON/OFF times as  
The present time 10:30 pm. and  
are displayed.  
shown in 2-1, 2, 3 and 3-1, 2, 3.  
The ON/OFF combination timer uses the current time as the  
reference, and it is activated starting from whichever set time  
comes first.  
NOTE  
With the ON/OFF combination timer, the settings are repeated  
every day.  
You can check the timer ON/OFF times after you have set them  
by pressing the ON TIME and OFF TIME setting buttons.  
To cancel a timer program  
Press the CANCEL button.  
When either an ON or OFF timer is to be canceled, press the button  
corresponding to the timer whose program is to be canceled, and then press  
the CANCEL button.  
The airflow direction, fan speed and temperature setting can be changed after  
a timer program has been set even when the unit is stopped. Even when  
operation is stopped during an ON timer program, the unit will start operating  
when the set time is reached provided that the program is not canceled.  
When the ON timer and OFF timer are set to the same time, the timer  
operates as if it is turned off.  
NOTE  
OI-800-18-EG  
18  
Using the 1-Hour OFF Timer  
1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop,  
regardless of whether the unit is on or off when this button is pressed.  
The  
indicator in the display indicates that this function is operating.  
Setting procedure:  
Regardless of whether the unit is operating or stopped, press the 1 HR. TIMER  
button.  
appears in the display.  
Cancellation procedure:  
Press the ON/OFF operation button to turn the unit off, wait for the unit to stop  
operating, and then press the ON/OFF operation button again.  
The 1-Hour Timer function is now cancelled and the unit operates normally.  
If, while the 1-Hour Timer function is operating, the 1HR. TIMER button is  
pressed once to cancel the function and then again, the unit continues to  
operate for one hour from that point in time and then stops.  
It is not possible to use the OFF Timer and 1-Hour OFF Timer together.  
Whichever function is set last takes precedence. If the 1 HR. TIMER button is  
pressed while the TIMER OFF function operates, the OFF Timer is cancelled  
and the unit will stop operating one hour later.  
NOTE  
2. Operation together with the The 1-Hour OFF Timer setting is given priority over the DAILY ON/OFF REPEAT  
DAILY ON/OFF REPEAT Timer setting.  
Tips for Energy Saving  
Do not  
Block the air intake and outlet of the unit. If they are obstructed, the unit  
will not work well, and may be damaged.  
Let direct sunlight into the room. Use sunshades, blinds or curtains. If the walls  
and ceiling of the room are warmed by the sun, it will take longer to cool the  
room.  
Do  
Always try to keep the air filter clean. (Refer to “Care and Cleaning”.) A  
clogged filter will impair the performance of the unit.  
To prevent conditioned air from escaping, keep windows, doors and any other  
openings closed.  
OI-800-19-EG  
19  
Adjusting the Airflow Direction  
1. Horizontal The horizontal airflow can be adjusted by moving the vertical vanes with your  
hands to the left or right.  
When the humidity is high, the vertical vanes should be in the front  
CAUTION  
position during the cooling or dehumidifying operation. If the vertical  
vanes are positioned all of the way to the right or left, condensation may  
begin to form around the air vent and drip down.  
2. Vertical The vertical airflow can be adjusted by moving the flap with the remote control  
unit. Do not move the flap with your hands. Confirm that the remote control unit  
has been turned on. Use the FLAP button to set either the sweep function or one  
of the six airflow direction settings.  
COOL  
SWEEP  
DRY  
FAN  
A. Sweep function  
B. Setting the airflow manually  
Referring to the above illustration, use the  
The flap starts moving up and down to  
deliver air over the sweep range.  
FLAP button to set the airflow direction  
within the range used during the cooling or  
dehumidifying operation.  
C. Auto flap function  
The flap is set to the recommended  
position.  
The flap automatically closes when the unit is off.  
NOTE  
Use the FLAP button on the remote control to adjust the position of the  
flap. If you move the flap by hand, the flap position according to the  
remote control and the actual flap position may no longer match. If this  
should happen, shut off the unit, wait for the flap to close, and then turn  
on the unit again; the flap position will now be normal again.  
CAUTION  
Do not have the flap pointed down during cooling operation.  
Condensation may begin to form around the air vent and drip down.  
OI-800-20-EG  
20  
Operation without the Remote  
Control Unit  
INDOOR UNIT  
If you have lost the remote control unit or it has trouble, follow the steps  
below.  
When the air conditioner is not running  
Each time the OPERATION button is pressed, the operation mode changes  
cyclically.  
Cooling operation  
Stop  
OPERATION button  
The temperature is set to the room temperature minus 4 °F during the cooling  
operation, and the fan speed and flap are set to Auto.  
NOTE  
Care and Cleaning  
1. For safety, be sure to turn the air conditioner off and also to disconnect  
the power before cleaning.  
2. Do not pour water on the indoor unit to clean it. This will damage the  
internal components and cause an electric shock hazard.  
Casing and Grille (Indoor Unit) Clean the casing and grille of the indoor unit with a vacuum cleaner brush, or  
wipe them with a clean, soft cloth.  
If these parts are stained, use a clean cloth moistened with a mild liquid  
detergent. When cleaning the grille, be careful not to force the vanes out of place.  
1. Never use solvents, or harsh chemicals when cleaning the indoor unit.  
CAUTION  
Do not wipe the plastic casing using very hot water.  
2. Some metal edges and the fins are sharp and may cause injury if  
handled improperly; be especially careful when you clean these parts.  
3. The internal coil and other components of the outdoor unit must be  
cleaned every year. Consult your dealer or service center.  
OI-800-21-EG  
21  
Care and Cleaning (continued)  
Anti-Mold Filter The anti-mold filter behind the air intake grille should be checked and cleaned at  
least once every two weeks.  
How to remove the anti-mold 1. Grasp both ends of the air  
Air intake grille  
filter  
intake grille, and remove it by  
opening towards the front and  
pulling towards you.  
2. Remove the anti-mold filter  
attached to the rear of the air  
intake grille.  
Anti-mold filter  
Cleaning Use a vacuum cleaner to remove light dust. If there is sticky dust on the filter,  
wash the filter in lukewarm, soapy water, rinse it in clean water, and dry it.  
How to replace the anti-mold 1. With the FRONT mark of the  
Anti-mold filter  
filter  
anti-mold filter at the front,  
align the two indentions near  
the mark with the hooks at the  
rear of the air intake grille, and  
then mount the anti-mold filter.  
FRONT mark  
Hook  
2. Allow the edge of the air intake  
grille to slide into the top of the  
indoor unit, and then insert it  
all the way inside.  
Groove  
Pin  
Air intake grille  
3. To attach the air intake grille to  
the indoor unit, press its  
bottom right and left corners as  
well as its bottom center into  
place.  
Air intake grille  
Attach so that the round pins at the top right and left corners of the air intake grille  
are inserted into the grooves at the top right and left of the indoor unit.  
NOTE  
OI-800-22-EG  
22  
Care and Cleaning (continued)  
Air Clean Filter The air clean filter removes dust and dirt from the air, and reduces odors and  
smoke from tobacco.  
This air clean filter cannot remove harmful gases or vapors nor ventilate air in  
the room. You must open doors or windows frequently when you use gas or oil  
heating appliances. Otherwise there is a risk of suffocation in extreme cases.  
How to install the air clean The air clean filter needs to be installed behind the air intake grille.  
filter 1. Remove the air intake grille.  
2. Install the air clean filter in the  
position shown in the figure.  
3. Remount the air intake grille.  
Air clean  
filter  
How to clean the air clean filter  
In general, the filter should be sucked to remove dust in low fan speed of a  
vacuum cleaner once every three months.  
If there is heavily grime on the filter, soak the filter in lukewarm water with  
neutral detergent diluted 1:500 for 1 to 2 minutes then wash it.  
Rinse the filter in clean water, then let it dry on the towel in room temperature.  
Do not bend nor give excessive force onto the air clean filter.  
If the filter surface is heavily blocked with dirt or damaged, replace it with new  
one. Purchase a replacement filter at your local dealer. (model STK-FDXB)  
NOTE  
Cleaning the main unit and  
remote control unit  
Wipe clean using a soft, dry cloth.  
To remove stubborn dirt, moisten a cloth in warm water no hotter than 104 °F,  
wring thoroughly, and then wipe.  
The air intake grille can be removed in order to wash it with water.  
Removing and remounting the Refer to “How to remove the anti-mold filter” and “How to replace the anti-mold  
air intake grille filter” on page 22.  
When using a footstool or the like, be careful not to let it tip over.  
CAUTION  
Washing the grille with water  
Clean the grille gently using a soft sponge, or the like. Then wipe away any  
remaining moisture.  
Neutral detergent may be used to remove stubborn dirt. Then rinse thoroughly  
with water and wipe away any remaining moisture.  
Cleaning the negative ion Follow the steps below when the  
generator generator has become dirty.  
For safety, be sure to turn the air  
conditioner off and also to disconnect  
the power before cleaning.  
Remove the dust on the negative ion  
generator.  
Use a toothbrush, etc. to dust off the end.  
Use a cotton swab, etc., to clean around  
the generator inside the plastic case,  
taking care not to touch the electrodes.  
Negative ion generator  
(metal electrodes inside  
plastic case)  
During use, the negative ion generator and other metal parts may become  
discolored: this is normal and not indicative of malfunctioning.  
If the dirt on and around the negative ion generator is left to build up, a puffing or  
sputtering sound will eventually be heard. In this case, clean the generator immediately.  
Do not apply excessive force while performing maintenance.  
NOTE  
OI-800-23-EG  
23  
Troubleshooting  
If your air conditioner does not work properly, first check the following points before requesting service. If it still does not  
work properly, contact your dealer or service center.  
Trouble  
Possible Cause  
1. Power failure.  
Remedy  
1. Restore power.  
Air conditioner does not run at all.  
2. Leakage circuit breaker tripped.  
2. Contact service center.  
3. Consult your electrician or dealer.  
4. Replace batteries.  
3. Line voltage is too low.  
4. Batteries in remote control unit have  
run down.  
OPERATION lamp blinks and air  
conditioner does not operate.  
Trouble in system.  
Contact service center.  
Compressor runs but soon stops.  
Poor cooling performance.  
Obstruction in front of condenser coil.  
1. Dirty or clogged air filter.  
Remove obstruction.  
1. Clean air filter to improve airflow.  
2. Eliminate heat source if possible.  
3. Shut them to keep the heat out.  
4. Remove it to ensure good airflow.  
2. Heat source or many people in room.  
3. Doors and/or windows are open.  
4. Obstacle near air intake or air  
discharge port.  
5. Thermostat is set too high for cooling. 5. Set the temperature lower.  
Clicking sound is heard from the air  
conditioner.  
In cooling operation, any plastic parts  
may shrink due to a sudden  
This is normal, and the sound will soon  
disappear.  
temperature change. In this event, a  
clicking sound may occur.  
OPERATION lamp lights but outdoor  
unit will not run.  
1. The use of cellular phones near the  
air conditioner may cause  
1. Turn off the power then restart the  
air conditioner after a while.  
disturbance to its normal operation.  
2. Consult your dealer.  
Operating Range  
The air conditioner is operable within the temperature ranges as listed below:  
For Cooling Only Models : C1872, C2472  
Temperature  
Indoor air temperature  
Outdoor air temperature  
COOLING  
Max.  
Min.  
95 °F DB / 71 °F WB  
67 °F DB / 57 °F WB  
115 °F DB  
67 °F DB  
For Low Ambient Cooling Models : CL1872, CL2472  
Temperature  
Indoor air temperature  
Outdoor air temperature  
COOLING  
Max.  
Min.  
95 °F DB / 71 °F WB  
67 °F DB / 57 °F WB  
115 °F DB  
0 °F DB  
OI-800-24-EG  
24  
For Parts Service Contact  
SANYO Fisher Service Company  
A Division of SANYO North America Corporation  
1165 Allgood Road, Suite 22, Marietta, GA 30062 U.S.A.  
Sanyo Canada Inc.  
1-300 Applewood Crescent, Concord, Ontario L4K 5C7, CANADA  
Jan./2006 (T)  

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