Mitsubishi Electronics Mr Slim Pka A Ga User Manual

Air-Conditioners  
PKA-A·GA  
PKA-A·GAL  
FOR INSTALLER  
INSTALLATION MANUAL  
English  
Español  
For safe and correct use, read this manual and the outdoor unit installation manual thoroughly before installing  
the air-conditioner unit.  
PARA EL INSTALADOR  
MANUAL DE INSTALACIÓN  
Para un uso correcto y seguro, lea detalladamente este manual y el manual de instalación de la unidad exterior  
antes de instalar la unidad de aire acondicionado.  
2. Installation location  
D
2.1. Outline dimensions (Indoor unit) (Fig. 2-1)  
Select a proper position allowing the following clearances for installation and mainte-  
nance.  
(mm)  
(inch)  
H
Models  
W
990  
39  
D
235  
9-1/4  
H
340  
A
E
F
G
H
Min. 30 Max. 130 Min. 180 Min. 50 Min. 150  
A12, A18  
13-3/8 Min. 1-13/16  
Max. 5  
Max. 7-3/32 Min. 1-31/32 Min. 5-29/32  
W
B
BCeiling  
CWall  
A
F
DFurnishing, etc  
C
Warning:  
Mount the indoor unit on a ceiling strong enough to withstand the weight of the  
unit.  
D
G
H
2.2. Outline dimensions (Outdoor unit)  
Refer to the outdoor unit installation manual.  
E
Fig. 2-1  
3. Installing the indoor unit  
3
1
4
7
0
2
5
8
3.1. Check the indoor unit accessories (Fig. 3-1)  
The indoor unit should be supplied with the following accessories.  
PART NUMBER  
ACCESSORY  
Mount board  
QUANTITY  
LOCATION OF SETTING  
Fix at the back of the unit  
1
2
3
4
5
6
7
8
9
0
1
12  
1
6
9
Tapping screw 4 × 35  
Pipe cover  
Band  
3
Felt tape  
3
Set inside the unit  
Wireless remote controller  
Remocon holder  
Alkali batteries (size AAA)  
Mount piece  
1
1
for PKA-A·GAL  
}
2
1
Wired remote controller  
1
for PKA-A·GA  
6 - 8 are stored in a cut-out section of the packing material (styrofoam).  
Fig. 3-1  
(inch)  
A
E
D
F
3.2. Installing the wall mounting fixture (Fig. 3-2)  
3.2.1. Setting the wall mounting fixture and piping positions  
s Using the wall mounting fixture, determine the units installation position  
and the locations of the piping holes to be drilled.  
B
0
G
1-3/8  
2-5/32  
3-5/32  
5-1/8  
Warning:  
7-15/32  
9-1/16  
C
Before drilling a hole in the wall, you must consult the building contractor.  
10-23/32  
12-7/32  
12-11/16  
13-3/8  
ASupporting piece  
IBottom left pipe slot knockout hole  
JBottom right pipe slot (ø90 mm, 3-9/16 inch)  
KBottom right pipe slot knockout hole  
LLiquid pipe flare connection position  
MGas pipe flare connection position  
NLevel setting standard  
BMount board  
H
CMain body  
J
I
DSlot (6-11 × 20,  
6P-7/16 × 25/32 inch)  
EUnit center  
L
K
M
N
FBolt hole (14-ø14 mm,  
14P-9/16 inch)  
VInsert scale.  
B
YHole centre  
W
GTapping hole (49-ø5 mm,  
49P-3/16 inch)  
ZAlign the scale with the line.  
3-15/16  
HBottom left pipe slot  
(ø90 mm, 3-9/16 inch)  
Y
Z
X
Fig. 3-2  
3.2.2. Drilling the piping hole (Fig. 3-3)  
s Use a core drill to make a hole of 90-100 mm, 3-9/16 to 4 inch diameter in the  
wall in the piping direction, at the position shown in the diagram to the left.  
s The hole should incline so that the outside opening is lower than the inside  
opening.  
s Insert a sleeve (with a 90 mm, 3-9/16 inch diameter and purchased locally)  
through the hole.  
B
ASleeve  
BHole  
A
C(Indoors)  
DWall  
Note:  
C
The purpose of the holes inclination is to promote drain flow.  
E
E(Outdoors)  
D
Fig. 3-3  
3
3. Installing the indoor unit  
3.2.3. Installing the wall mounting fixture  
1
s Since the indoor unit weighs near 30 kg, 66 lbs selection of the mounting  
location requires thorough consideration. If the wall does not seem to be  
strong enough, reinforce it with boards or beams before installation.  
s The mounting fixture must be secured at both ends and at the centre, if  
possible. Never fix it at a single spot or in any nonsymetrical way.  
(If possible, secure the fixture at all the positions marked with a bold arrow.)  
(Fig. 3-4)  
C
B
A
AMin. 140 mm,  
5-1/2 inch  
BMin. 300 mm,  
11-13/16 inch  
CMin. 55 mm,  
2-3/16 inch  
2
D
Warning:  
If possible, secure the fixture at all positions indicated with a bold arrow.  
Fig. 3-4  
Caution:  
DMount board  
The unit body must be mounted horizontally.  
Fasten at the holes marked with L as shown by the arrows.  
1 Fasten a thread to the hole.  
2 The level can be easily obtained by hanging a weight from the string and aligning the string  
with the mark.  
B
3.3. When embedding pipes into the wall (Fig. 3-5)  
The pipes are on the bottom left.  
When the cooling pipe, drain pipes internal/external connection lines etc are to be  
embedded into the wall in advance, the extruding pipes etc, may have to be bent  
and have their length modified to suit the unit.  
Use marking on the mount board as a reference when adjusting the length of the  
embedded cooling pipe.  
A
C
During construction, give the length of the extruding pipes etc some leeway.  
AMount board  
D
BReference marking for flare connection  
Fig. 3-5  
CThrough hole  
DOn-site piping  
3.4. Preparing the indoor unit  
Rear, right and lower piping (Fig. 3-6)  
a
1. Bind the cooling pipe and drain pipe together.  
Bind the pipes together with vinyl tape at three or more points. This will facilitate  
passing the pipes through the wall.  
A
2. Remove the corner box and knock out the knockout holes as necessary.  
Remove the corner box by pushing in a downward direction b, while at the same  
time, pressing in the upper side part of the corner box a.  
ACorner box  
b
Fig. 3-6  
BUnder cover  
a
Left and left rear piping (Fig. 3-7)  
1. Remove the under cover.  
Remove the under cover by sliding it towards the rear of the unit b, while at the  
same time, pressing the two points marked by arrow heads a.  
2. Remove the corner box and knock out the knockout holes as necessary.  
A
b
b
B
a
Fig. 3-7  
C
3.5. Mounting the indoor unit  
1. Affix the mounting plate to the wall.  
2. Hang the indoor unit on the two hooks positioned on the upper part of the mount-  
ing plate.  
Rear, right and lower piping (Fig. 3-8)  
3. Affix the indoor unit.  
4. After connecting the pipes, put the corner box back to where it was (follow the  
A
B
removal steps backwards).  
ASquare hole  
BHooks  
B
A
Fig. 3-8  
A
Left and left rear piping (Fig. 3-9)  
3. Cut out a mounting piece from the packaging material.  
(inch)  
B
4. Pull the indoor unit up towards yourself as shown in the figure below and slide the  
mounting piece in to the mounting plate using the mounting piece setting marks  
as reference.  
C
5. After connecting the pipes and wiring, put the under cover back to where it was,  
and remove the mounting piece and affix the indoor unit as shown in the left  
figure.  
6. Put the corner box back to where it was.  
AMounting piece  
BCeiling  
A
Fig. 3-9  
CRib  
4
4. Installing the refrigerant piping  
4.1. Precautions  
4.1.1. For devices that use R410A refrigerant  
Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration oil  
applied to the flared sections.  
Use C1220 copper phosphorus, for copper and copper alloy seamless pipes,  
to connect the refrigerant pipes. Use refrigerant pipes with the thicknesses  
specified in the table to the below. Make sure the insides of the pipes are  
clean and do not contain any harmful contaminants such as sulfuric com-  
pounds, oxidants, debris, or dust.  
Warning:  
When installing or moving the air conditioner, use only the specified refriger-  
ant (R410A) to charge the refrigerant lines. Do not mix it with any other refriger-  
ant and do not allow air to remain in the lines. Air enclosed in the lines can  
cause pressure peaks resulting in a rupture and other hazards.  
A12, A18  
Liquid pipe  
Gas pipe  
ø6.35mm, 1/4 inch thickness 0.8 mm, 1/32 inch  
ø12.7mm, 1/2 inch thickness 0.8 mm, 1/32 inch  
Do not use pipes thinner than those specified above.  
(inch)  
A
B
4.2. Connecting pipes (Fig. 4-1)  
When commercially available copper pipes are used, wrap liquid and gas pipes  
with commercially available insulation materials (heat-resistant to 100 °C, 212 °F or  
more, thickness of 12 mm, 1/2 inch or more).  
45° 2°  
C
The indoor parts of the drain pipe should be wrapped with polyethylene foam insu-  
lation materials (specific gravity of 0.03, thickness of 9 mm, 23/64 inch or more).  
Apply thin layer of refrigerant oil to pipe and joint seating surface before tightening  
flare nut.  
D
Use two wrenches to tighten piping connections.  
Use refrigerant piping insulation provided to insulate indoor unit connections. Insu-  
late carefully.  
Fig. 4-1  
B
Flare nut tightening torque  
A
Flare cutting dimensions  
Copper pipe O.D.  
(mm, inch)  
ø6.35, 1/4”  
ø9.52, 3/8”  
ø12.7, 1/2”  
Flare nut O.D.  
(mm, inch)  
17, 43/64  
22, 7/8  
26, 1-3/64  
29, 1-9/64  
Tightening torque  
(N·m, ft·lbs)  
14 - 18, 10-13  
34 - 42, 25-30  
49 - 61, 35-44  
68 - 82, 49-59  
Copper pipe O.D.  
(mm, inch)  
ø6.35, 1/4”  
ø9.52, 3/8”  
ø12.7, 1/2”  
Flare dimensions  
øA dimensions (mm, inch)  
8.7 - 9.1, 11/32-23/64  
12.8 - 13.2, 1/2-33/64  
16.2 - 16.6, 41/64-21/32  
19.3 - 19.7, 49/64-25/32  
ø15.88, 5/8”  
ø15.88, 5/8”  
CApply refrigerating machine oil over the entire flare seat surface.  
DUse correct flare nuts meeting the pipe size of the outdoor unit.  
Available pipe size  
A12, A18  
ø6.35  
Liquid side  
Gas side  
ø12.7  
: Factory flare nut attachment to the heat-exchanger.  
5
4. Installing the refrigerant piping  
1
(inch)  
4.3. Positioning refrigerant and drain piping  
1 Position of refrigerant and drain piping (Fig. 4-2)  
The drain pipe can be cut midway to meet the on-site conditions.  
C
B
A(Total length of flexible hose)  
BLiquid pipe  
DDrain hose  
1-3/8E  
ELeft-side piping  
FRight-side piping  
2-1/8  
3-3/8  
22-7/8  
17-11/16  
CGas pipe  
B
D
2 Determine the position of the knockout holes on the unit body. (Fig. 4-3)  
C27-9/16 A  
6-1/32 F  
D
s Cut the knockout holes using a saw blade or an adequate knife.  
Take care not to damage other parts of the unit.  
Fig. 4-2  
2
B
A
Remove the corner box and drill a knockout hole. If a hole is made without remov-  
ing the box, the drain hose could be damaged.  
(inch)  
C
E
ALeft-side piping  
BLower piping  
DRemote controller cable through hole  
D
D
ECorner box  
CRight-side piping  
13/32  
7/8  
D
5/16  
2-3/4  
1-3/8  
5/16  
2-3/8  
E
7-15/32  
2-3/8  
E
Fig. 4-3  
B
4.4. Refrigerant piping (Fig. 4-4)  
Indoor unit  
D
1. Remove the flare nut and cap of the indoor unit.  
2. Make a flare for the liquid pipe and gas pipe and apply refrigerating machine oil  
(available from your local supplier) to the flare sheet surface.  
3. Quickly connect the on site cooling pipes to the unit.  
4. Wrap the pipe cover 3 that is attached to the gas pipe and make sure that the  
connection join is not visible.  
C
E
G
5. Wrap the pipe cover of the units liquid pipe and make sure that it covers the  
insulation material of the on site liquid pipe.  
6. Use the bands that are provided 4 to tighten both ends (1520mm, 19/32 to  
25/32 inch) of each pipe cover 3.  
A
F
Fig. 4-4  
ACooling pipe and insulation (available from local supplier)  
BUnits gas pipe  
CUnits liquid pipe  
DPipe cover 3  
EBands 4  
FOn site gas pipe  
GOn site liquid pipe  
5. Drainage piping work  
A
B
5.1. Drainage piping work (Fig. 5-1)  
Drain pipes should have an inclination of 1/100 or more.  
For extension of the drain pipe, use a soft hose (inner dia. 15 mm, 19/32 inch)  
available on the market or hard vinyl chloride pipe (VP-20/O.D. ø26 mm, 1-1/32  
inch PVC TUBE). Make sure that there is no water leakage from the connections.  
If the drain pipe passes indoors it must be covered with insulating material (foamed  
polyethylene: specific gravity: 0.03, thickness: 9 mm, 23/64 inch or more) available on the  
market.  
C
Fig. 5-1  
Do not put the drain piping directly in a drainage ditch where sulphuric gas may be  
generated.  
When piping has been completed, check that water flows from the end of the drain  
pipe.  
1
3
2
A
a
ADrain connection socket  
CIndoor units drain hose  
BOn site drain pipe (VP-20)  
b
Caution:  
The drain pipe should be installed according to this Installation Manual to en-  
sure correct drainage. Thermal insulation of the drain pipes is necessary to  
prevent condensation. If the drain pipes are not properly installed and insu-  
lated, condensation may drip on the ceiling, floor or other possessions.  
Preparing left and left rear piping (Fig. 5-2)  
1 Remove the drain cap.  
A
A
Remove the drain cap by holding the bit that sticks out at the end of the pipe and  
pulling.  
4
B
ADrain cap  
2 Remove the drain hose.  
Remove the drain hose by holding on to the base of the hose a(shown by arrow)  
and pulling towards yourself b.  
3 Insert the drain cap.  
Insert a screwdriver etc into the hole at the end of the pipe and be sure to push to  
the base of the drain cap.  
4 Insert the drain hose.  
Push the drain hose until it is at the base of the drain box connection outlet.  
Please make sure the drain hose hook is fastened properly over the extruding drain  
box connection outlet.  
BHooks  
Remove the side panel of the indoor unit on the drain side. Pour water in the drain  
pan and check that it comes out the drain pipe end. After confirmation, reinstall the  
side panel.  
Fig. 5-2  
6
6. Electrical work  
6.1. Indoor unit (Fig. 6-1)  
1. Remove the corner box.  
2. Install each wire into the unit.  
3. Open the front grill, remove 1 tapping screw and remove the terminal block cover.  
ATerminal block cover  
4. Connect each wire properly to the terminal block.  
In consideration of future servicing, please leave some leeway for the wiring length.  
5. Put all the parts back the way they were.  
F
B
A
6. Use a clamp from the bottom of the electric parts box to fasten each wire.  
s Fix power source wiring to control box using buffer bushing for tensile force.  
(PG connection or the like.)  
C
D
A means for the disconnection of the supply with an isolation switch, or similar de-  
vice, in all active conductors shall be incorporated in the fixed wiring.  
BTerminal block for Indoor/outdoor connecting  
E
CTerminal block for power supply (separate indoor/outdoor unit power supplies, K-control ap-  
plication)  
G
H I G J K  
DEarth point  
EClamp  
FTerminal block for remote controller (Only for PKA-A·GA)  
GConduit plate  
HBush (Purchased locally)  
ILock nut (Purchased locally)  
JConnector (Purchased locally)  
KConduit (Purchased locally)  
Fig. 6-1  
6.1.1. Indoor unit power supplied from outdoor unit (A-control application)  
The following connection patterns are available.  
The outdoor unit power supply patterns vary on models.  
1:1 System  
AOutdoor unit power supply  
BWiring circuit breaker or isolating switch  
COutdoor unit  
C
F
L1  
DIndoor unit/outdoor unit connecting cords  
ERemote controller (Only for PKA-A·GA)  
FIndoor unit  
L2  
A B  
GR  
D
S1  
S2  
S3  
S1  
S2  
S3  
GIndoor unit earth  
1
2
E
G
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.  
Simultaneous twin system  
AOutdoor unit power supply  
BWiring circuit breaker or isolating switch  
COutdoor unit  
F F  
C
L1  
DIndoor unit/outdoor unit connecting cords  
ERemote controller (Only for PKA-A·GA)  
FIndoor unit  
L2  
A B  
GR  
D
G
S1  
S2  
S3  
S1  
S2  
S3  
S1  
S2  
S3  
GIndoor unit earth  
1
2
1
2
E
G
* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.  
Indoor unit model  
PKA  
Indoor unit power supply  
Minimum circuit ampacity  
Maximum rating of overcurrent protective device  
Indoor unit power supply  
Indoor unit power supply earth  
Indoor unit-Outdoor unit  
1A  
15A  
*1  
3 × AWG16 (polar)  
1 × Min. AWG16  
2 × AWG22 (Non-polar)  
Indoor unit earth  
Remote controller-Indoor unit  
Indoor unit L1-L2  
Indoor unit-Outdoor unit S1-S2  
Indoor unit-Outdoor unit S2-S3  
Remote controller-Indoor unit  
*2  
*3  
*3  
*3  
*3  
AC 208/230 V  
DC24 V  
DC12 V  
*1. Max. 50 m, 165 ft  
*2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max. 500 m, 1500 ft <Only for PKA-A·GA>  
*3. The figures are NOT always against the ground.  
S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are not electrically insulataed by the transformer or other device.  
Notes: 1. Wiring size must comply with the applicable local and national code.  
2. Use copper supply wires.  
3. Use wires rated 300V or more for the power supply cables and the indoor unit/outdoor unit connecting cables.  
4. Install an earth longer than other cables.  
7
6. Electrical work  
6.1.2. Separate indoor unit/outdoor unit power supplies (A-control application)  
The following connection patterns are available.  
The outdoor unit power supply patterns vary on models.  
1:1 System  
AOutdoor unit power supply  
BWiring circuit breaker or isolating switch  
COutdoor unit  
F
L1  
L2  
GR  
C
L1  
L2  
GR  
DIndoor unit/outdoor unit connecting cords  
ERemote controller (Only for PKA-A·GA)  
FIndoor unit  
G
B
B
A
GIndoor unit power supply  
S1  
S2  
S3  
S1  
S2  
S3  
D
1
2
E
* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.  
Simultaneous twin system  
AOutdoor unit power supply  
BWiring circuit breaker or isolating switch  
COutdoor unit  
C
L1  
L2  
GR  
F F  
DIndoor unit/outdoor unit connecting cords  
ERemote controller (Only for PKA-A·GA)  
FIndoor unit  
L1  
L2  
GR  
L1  
L2  
GR  
G
B
A B  
GIndoor unit power supply  
S1  
S2  
S3  
S1  
S2  
S3  
S1  
S2  
S3  
D
1
2
1
2
E
* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.  
If the indoor and outdoor units have separate power supplies, refer to the table at the  
below. Change the indoor unit electrical box wiring refering to the figure in the right  
and the DIP switch settings of the outdoor unit control board.  
If the indoor and  
Connectors (connections when shipped  
from the factory are for indoor unit power  
supplied from outdoor unit)  
outdoor units have  
separate power  
supplies, change the  
connections of the  
connectors as shown  
in the following  
Indoor unit specifications  
Indoor unit electrical box connector con-  
nection change  
L1  
Required  
L2  
GR  
ORANGE  
CND  
figure.  
Label affixed near each wiring diagram  
Required  
for the indoor and outdoor units  
Indoor unit  
control board  
S1  
Outdoor unit DIP switch settings (when  
using separate indoor unit/outdoor unit  
power supplies only)  
S2  
ON  
OFF  
3
S3  
Connectors  
(SW8)  
L1  
L2  
1
2
Indoor unit power supplied from outdoor unit  
(when shipped from factory)  
GR  
ORANGE  
CND  
* There are three types of labels (labels A, B, and C). Affix the appropriate labels to  
the units according to the wiring method.  
Indoor unit  
control board  
S1  
S2  
S3  
Separate indoor unit/outdoor unit power  
supplies  
Indoor unit model  
PKA  
Indoor unit power supply  
Single 208/230 V, 60 Hz  
Minimum circuit ampacity  
Maximum rating of overcurrent protective device  
Indoor unit power supply  
1 A  
15A  
2 × Min. AWG16  
1 × Min. AWG16  
2 × AWG22 (polar)  
Indoor unit power supply earth  
Indoor unit-Outdoor unit  
Indoor unit earth  
*1  
Remote controller-Indoor unit  
Indoor unit L1-L2  
Indoor unit-Outdoor unit S1-S2  
Indoor unit-Outdoor unit S2-S3  
Remote controller-Indoor unit  
*2  
*3  
*3  
*3  
*3  
2 × AWG22 (Non-polar)  
AC 208/230 V  
DC24 V  
DC12 V  
*1. Max. 50 m, 165 ft  
*2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max. 500 m, 1500 ft  
*3. The figures are NOT always against the ground.  
Notes: 1. Wiring size must comply with the applicable local and national code.  
2. Use copper supply wires.  
3. Use wires rated 300V or more for the power supply cables.  
4. Install an earth longer than other cables.  
8
6. Electrical work  
6.1.3. K-control application  
The following connection patterns are available.  
The outdoor unit power supply patterns vary on models.  
1:1 System  
AOutdoor unit power supply  
<For heat pump models>  
<For cooling only models>  
BWiring circuit breaker or isolating switch  
COutdoor unit  
F
L1  
L2  
GR  
G
L1  
L2  
GR  
C
L1  
L2  
GR  
C
L1  
L2  
DIndoor unit/outdoor unit connecting cords  
ERemote controller (Only for PKA-A·GA)  
FIndoor unit <For heat pump models>  
GIndoor unit <For cooling only models>  
HIndoor unit power supply  
H
H
B
B
B
B
A
A
GR  
S1  
S2  
S3  
S1  
S2  
S3  
S1  
S2  
S3  
S1  
S2  
S3  
D
D
1
2
1
2
E
E
Set the DIP switch of the indoor  
unit control board.  
Set the DIP switch of the indoor  
unit control board.  
SW5  
1
SW5  
2
1
2
3
3
SW51 : ON SW52, 3 : OFF  
SW51, 2 : ON SW53 : OFF  
* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.  
Simultaneous twin system  
AOutdoor unit power supply  
<For heat pump models>  
<For cooling only models>  
BWiring circuit breaker or isolating switch  
COutdoor unit  
C
L1  
F G  
C
L1  
J K  
L1  
L2  
GR  
L1  
L2  
GR  
L1  
L2  
GR  
L1  
L2  
GR  
DIndoor unit/outdoor unit connecting cords  
ERemote controller (Only for PKA-A·GA)  
FMain indoor unit <For heat pump models>  
GSub indoor unit <For heat pump models>  
HIndoor unit power supply  
H
B
H
B
L2  
L2  
A B  
A B  
GR  
GR  
S1  
S2  
S3  
S1  
S2  
S3  
S1  
S2  
S3  
S1  
S2  
S3  
S1  
S2  
S3  
S1  
S2  
S3  
D
D
1
2
1
2
1
2
1
2
E
E
JMain indoor unit <For cooling only models  
>
>
KSub indoor unit <For cooling only models  
Set the DIP switch of the indoor  
unit control board.  
Set the DIP switch of the indoor  
unit control board.  
G
H
K
L
Main indoor  
Sub indoor  
Main indoor  
Sub indoor  
3
2
2 3  
1
1
1
1
2
3
2
3
SW5  
SW5  
SW51 : ON  
SW52 : OFF  
SW53 : OFF  
SW51 : ON  
SW52 : OFF  
SW53 : ON  
SW51 : ON  
SW52 : ON  
SW53 : OFF  
SW51 : ON  
SW52 : ON  
SW53 : ON  
* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.  
To change to K-control, set the DIP switch (SW5) of the indoor unit control board as  
shown in the above figure and change the electric wiring of the indoor unit as shown  
in the right figure.  
L1  
L2  
Connectors  
Set up Dip switch after turning off Power supply switch.  
GR  
Be careful that setting the DIP switch (SW5) of the indoor unit control board varies  
between the heat pump models and cooling models of the outdoor unit.  
ORANGE  
CND  
DIP switch (SW5)  
S1  
S2  
S3  
OFF  
ACONTROL  
heat pump models  
MAIN  
ON  
KCONTROL  
cooling only models  
SUB  
SW51  
SW52  
SW53  
INDOOR UNIT  
CONTROL BOARD  
Dip switch SW5-2 and SW5-3 is effective only  
when Dip switch SW5-1 (K-CONTROL) is ON.  
}
BLUE  
CN3C  
* There are three types of labels (labels A, B, and C). Affix the appropriate labels to  
the units according to the wiring method.  
BLACK  
CN30  
PKA  
Indoor unit model  
Indoor unit power supply  
Minimum circuit ampacity  
Maximum rating of overcurrent protective device  
Indoor unit power supply  
Single 208/230 V, 60 Hz  
1 A  
To change to the K-control,  
make sure to change the  
connectors as shown in the  
figure.  
15A  
L1  
L2  
2 × Min. AWG16  
1 × Min. AWG16  
H/P: 3 × AWG22 (polar)  
C/O: 2 × AWG22 (polar)  
Indoor unit power supply earth  
GR  
Indoor unit-Outdoor unit  
*1  
ORANGE  
CND  
Indoor unit earth  
Remote controller-Indoor unit  
Indoor unit L1-L2  
Indoor unit-Outdoor unit S1-S2  
Indoor unit-Outdoor unit S1-S3  
Remote controller-Indoor unit  
2 × AWG22 (Non-polar)  
AC 208/230 V  
DC12 V  
S1  
S2  
S3  
*2  
*3  
*3  
*3  
*3  
INDOOR UNIT  
CONTROL BOARD  
BLUE  
CN3C  
DC12 V  
DC12 V  
*1. Max. 50 m, 165 ft  
BLACK  
CN30  
*2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max. 500 m, 1500 ft  
*3. The figures are NOT always against the ground.  
Notes: 1. Wiring size must comply with the applicable local and national code.  
2. Use copper supply wires.  
3. Use wires rated 300V or more for the power supply cables.  
4. Install an earth longer than other cables.  
9
6. Electrical work  
B
6.2. Remote controller  
6.2.1. For wired remote controller  
1) Installing procedures  
A
(inch)  
(1) Select an installing position for the remote controller. (Fig. 6-2)  
The temperature sensors are located on both remote controller and indoor unit.  
s Procure the following parts locally:  
Two piece switch box  
1-3/16  
1-3/16  
D
C
1-37/64  
A
E
Thin copper conduit tube  
Lock nuts and bushings  
F
ARemote controller profile  
I
G
BRequired clearances surrounding the remote controller  
CInstallation pitch  
C
H
(2) Seal the service entrance for the remote controller cord with putty to prevent pos-  
sible invasion of dew drops, water, cockroaches or worms. (Fig. 6-3)  
AFor installation in the switch box:  
Fig. 6-2  
BFor direct installation on the wall select one of the following:  
Prepare a hole through the wall to pass the remote controller cord (in order to run  
the remote controller cord from the back), then seal the hole with putty.  
Run the remote controller cord through the cut-out upper case, then seal the cut-  
out notch with putty similarly as above.  
B-1. To lead the remote controller cord from the back of the controller:  
B-2. To run the remote controller cord through the upper portion:  
(3) For direct installation on the wall  
B-1.  
B-2.  
B
H
H
I
J
I
CWall  
DConduit  
ELock nut  
FBushing  
GSwitch box  
Fig. 6-3  
Fig. 6-4  
HRemote controller cord  
ISeal with putty  
JWood screw  
A
2) Connecting procedures (Fig. 6-4)  
1 Connect the remote controller cord to the terminal block.  
ATo TB5 on the indoor unit  
BTB6 (No polarity)  
3) Two remote controllers setting  
AB  
TB6  
If two remote controllers are connected, set one to Mainand the other to Sub. For  
setting procedures, refer to Function selection of remote controllerin the operation  
manual for the indoor unit.  
B
6.2.2. For wireless remote controller  
1) Installation area  
1
Area in which the remote controller is not exposed to direct sunshine.  
Area in which there is no nearby heating source.  
Area in which the remote controller is not exposed to cold (or hot) winds.  
Area in which the remote controller can be operated easily.  
Area in which the remote controller is beyond the reach of children.  
2) Installation method (Fig. 6-5)  
1 Attach the remote controller holder to the desired location using two tapping screws.  
2 Place the lower end of the controller into the holder.  
ARemote controller  
MODEL SELECT  
C
A
ON/OFF  
TEMP  
B
A
3
FAN  
AUTO STOP  
2
MODE VANE  
CHECK LOUVER  
TEST RUN  
AUTO START  
h
BWall  
CDisplay panel  
min  
ON STAND  
OFF BY  
DReceiver  
COOL HEAT  
SET  
RESET  
CLOCK  
The signal can travel up to approximately 7 meters, 23 ft (in a straight line) within 45  
degrees to both right and left of the center line of the receiver.  
3) Setting (Fig. 6-6)  
2,4  
1 Insert batteries.  
2 Press the SET button with something sharp at the end.  
Fig. 6-6  
blinks and Model No. is lighted.  
MODEL SELECT  
D
3 Press the temp  
4 Press the SET button with something sharp at the end.  
button to set the Model No.  
Fig. 6-5  
and Model No. are lighted for three seconds, then turned off.  
MODEL SELECT  
Indoor  
Outdoor  
AModel No.  
heat pump models  
cooling only models  
heat pump models  
cooling only models  
001  
033  
003  
035  
PLA, PCA, PKA (A12, A18)  
PKA (A24, A30, A36)  
10  
6. Electrical work  
4) Assigning a remote controller to each unit (Fig. 6-7)  
Each unit can be operated only by the assigned remote controller.  
Make sure each pair of an indoor unit PC board and a remote controller is assigned  
to the same pair No.  
A
MODEL SELECT  
5) Wireless remote controller pair number setting operation  
1 Press the SET button with something sharp at the end.  
Start this operation from the status of remote controller display turned off.  
ON/OFF  
TEMP  
blinks and Model No. is lighted.  
MODEL SELECT  
3
2
min  
2 Press the  
Pair No. 0blinks.  
3 Press the temp  
button twice continuously.  
FAN  
MODE VANE  
CHECK LOUVER  
TEST RUN  
AUTO STOP  
AUTO START  
h
button to set the pair number you want to set.  
4 Press the SET button with something sharp at the end.  
Set pair number is lighted for three seconds then turned off.  
min  
SET  
RESET  
CLOCK  
APair No. of wireless remote controller  
Indoor PC board  
1,4  
0
1
Factory setting  
Cut J41  
2
Cut J42  
39  
Cut J41, J42  
Fig. 6-7  
6.3. Function settings  
2
3
4
6.3.1 Function setting on the unit (Selecting the unit functions)  
1) For wired remote controller (Fig. 6-8)  
Changing the power voltage setting  
Be sure to change the power voltage setting depending on the voltage used.  
1 Go to the function setting mode.  
?1 Mode number  
?2 Setting number  
?3 Refrigerant address  
?4 Unit number  
1
TEMP.  
ON/OFF  
Switch OFF the remote controller.  
F
E
MENU  
ON/OFF  
DAY  
CLOCK  
FILTER  
CHECK TEST  
CLEAR  
Press the Aand Bbuttons simultaneously and hold them for at least 2  
seconds. FUNCTION will start to flash.  
A
B
BACK  
MONITOR/SET  
PAR-21MAA  
OPERATION  
2 Use the Cbutton to set the refrigerant address (3) to 00.  
3 Press Dand [--] will start to flash in the unit number (4) display.  
4 Use the Cbutton to set the unit number (4) to 00.  
5 Press the EMODE button to designate the refrigerant address/unit number. [--]  
will flash in the mode number (1) display momentarily.  
6 Press the Fbuttons to set the mode number (1) to 04.  
7 Press the Gbutton and the current set setting number (2) will flash.  
Use the Fbutton to switch the setting number in response to the power supply  
voltage to be used.  
G
C
D
4
Power supply voltage  
1
2
230 V  
208 V  
:
:
setting number = 1  
setting number = 2  
1
8 Press the MODE button Eand mode and the setting number (1) and (2) will  
change to being on constantly and the contents of the setting can be confirmed.  
9 Press the FILTER Aand TEST RUN Bbuttons simultaneously for at least two  
seconds. The function selection screen will disappear momentarily and the air  
conditioner OFF display will appear.  
Fig. 6-8  
2) For wireless remote controller (Fig. 6-9)  
Changing the power voltage setting  
Be sure to change the power voltage setting depending on the voltage used.  
1
2
CHECK  
CHECK  
CHECK  
1 Go to the function select mode  
CHECK  
Press the  
button Ftwice continuously.  
(Start this operation from the status of remote controller display turned off.)  
is lighted and 00blinks.  
CHECK  
ON/OFF  
TEMP  
Press the temp  
button Conce to set 50. Direct the wireless remote controller  
E
F
h
3
4
toward the receiver of the indoor unit and press the  
2 Setting the unit number  
Press the temp  
button A.  
C,D  
CHECK  
CHECK  
FAN  
AUTO STOP  
AUTO START  
h
button Cand Dto set the unit number 00. Direct the wireless  
MODE VANE  
CHECK LOUVER  
TEST RUN  
min  
remote controller toward the receiver of the indoor unit and press the  
3 Selecting a mode  
Enter 04 to change the power voltage setting using the Cand Dbuttons.  
button B.  
A
B
min  
Direct the wireless remote controller toward the receiver of the indoor unit and press  
SET  
RESET  
CLOCK  
h
the  
button A.  
Current setting number:  
1 = 1 beep (one second)  
2 = 2 beeps (one second each)  
3 = 3 beeps (one second each)  
4 Selecting the setting number  
Fig. 6-9  
Use the Cand Dbuttons to change the power voltage setting to 01 (240 V).  
Direct the wireless remote controller toward the sensor of the indoor unit and press  
h
the  
button A.  
5 To select multiple functions continuously  
Repeat steps 3 and 4 to change multiple function settings continuously.  
6 Complete function selection  
Direct the wireless remote controller toward the sensor of the indoor unit and press  
the  
button E.  
Note:  
Whenever changes are made to the function settings after installation or main-  
tenance, be sure to record the changes with a mark in the Settingcolumn of  
the Function table.  
6.3.2 Function setting on the remote controller  
Refer to the indoor unit operation manual.  
11  
6. Electrical work  
Function table  
Select unit number 00  
Mode no.  
01  
Setting no. Initial setting  
setting  
Mode  
Settings  
Not available  
Available  
1
2
1
2
3
1
2
3
1
2
1
2
Power failure automatic recovery  
*1  
Indoor temperature detecting  
LOSSNAY connectivity  
Indoor unit operating average  
Set by indoor units remote controller  
Remote controllers internal sensor  
Not Supported  
Supported (indoor unit is not equipped with outdoor-air intake)  
Supported (indoor unit is equipped with outdoor-air intake)  
230 V  
02  
03  
Power voltage  
04  
05  
208 V  
Auto mode (only for PUHZ)  
Energy saving cycle automatically enabled  
Energy saving cycle automatically disabled  
Select unit numbers 01 to 03 or all units (AL [wired remote controller]/07 [wireless remote controller])  
Mode no.  
07  
Setting no. Initial setting  
setting  
Mode  
Filter sign  
Settings  
100Hr  
2500Hr  
1
2
3
No filter sign indicator  
Standard (PLA)/Silent (PCA)  
1
1
2
3
1
2
3
1
2
1
2
3
1
2
Fan speed  
08  
High ceiling  
High ceiling  
4 directions  
3 directions  
2 directions  
(PLA)/Standard (PCA)  
(PLA)/High ceiling (PCA)  
2
No. of air outlets  
09  
10  
11  
12  
Installed options (high-performance filter)  
Up/down vane setting  
Not supported  
Supported  
No vanes  
Equipped with vanes (vanes angle setup  
Equipped with vanes (vanes angle setup  
1
)
2
)
Energy saving air flow  
(Heating mode)  
Disabled  
Enabled  
*1 When the power supply returns, the air conditioner will start 3 minutes later.  
7. Test run  
7.1. Before test run  
s After completing installation and the wiring and piping of the indoor and outdoor  
units, check for refrigerant leakage, looseness in the power supply or control  
wiring, wrong polarity, and no disconnection of one phase in the supply.  
s Use a 500-volt megohmmeter to check that the resistance between the power  
supply terminals and ground is at least 1.0 M.  
s Do not carry out this test on the control wiring (low voltage circuit) termi-  
nals.  
Warning:  
Do not use the air conditioner if the insulation resistance is less than 1.0 M.  
Insulation resistance  
AON/OFF button  
F E DB  
7.2. Test run  
The following 3 methods are available.  
BTest run display  
CIndoor temperature liquid line  
7.2.1. Using wired remote controller (Fig. 7-1)  
1 Turn on the power at least 12 hours before the test run.  
2 Press the [TEST] button twice. TEST RUNliquid crystal display  
3 Press the [Mode selection] button. Make sure that wind is blown out.  
4 Press the [Mode selection] button and switch to the cooling (or heating) mode.  
Make sure that cold (or warm) wind is blown out.  
5 Press the [Fan speed] button. Make sure that the wind speed is switched.  
6 Check operation of the outdoor unit fan.  
7 Release test run by pressing the [ON/OFF] button. Stop  
8 Register a telephone number.  
temperature display  
DON/OFF lamp  
EPower display  
TEST RUN  
COOL, HEAT  
˚C  
FError code display  
˚C  
C
SIMPLE  
Test run remaining time dis-  
play  
TEMP.  
ON/OFF  
A
MENU  
ON/OFF  
DAY  
FILTER  
GSet temperature button  
HMode selection button  
IFan speed button  
MTEST button  
BACK  
MONITOR/SET  
CHECK TEST  
CLEAR  
PAR-21MAA  
CLOCK  
OPERATION  
The telephone number of the repair shop, sales office, etc., to contact if an error  
occurs can be registered in the remote controller. The telephone number will be  
displayed when an error occurs. For registration procedures, refer to the operation  
manual for the indoor unit.  
HG  
I M  
Fig. 7-1  
7.2.2. Using wireless remote controller (Fig. 7-2)  
A
1 Turn on the power to the unit at least 12 hours before the test run.  
TEST RUN  
2 Press the  
button twice continuously.  
TEST RUN  
(Start this operation from the status of remote controller display turned off.)  
A
and current operation mode are displayed.  
MODE  
TEST RUN  
COOL  
HEAT  
3 Press the  
button to activate  
mode, then check whether  
mode, then check whether  
ON/OFF  
TEMP  
cool air is blown out from the unit.  
MODE  
7
4 Press the  
button to activate  
warm air is blown out from the unit.  
FAN  
AUTO STOP  
FAN  
5
6
5 Press the  
button and check whether fan speed changes.  
MODE VANE  
CHECK LOUVER  
TEST RUN  
AUTO START  
h
3,4  
VANE  
6 Press the  
button and check whether the auto vane operates properly.  
7 Press the ON/OFF button to stop the test run.  
min  
2
SET  
RESET  
CLOCK  
Note:  
Point the remote controller towards the indoor unit receiver while following  
steps 2 to 7.  
It is not possible to run the in FAN, DRY or AUTO mode.  
Fig. 7-2  
12  
7. Test run  
7.2.3. Using SW4 in outdoor unit  
Refer to the outdoor unit installation manual.  
B E D  
A B  
7.3. Self-check  
7.3.1. Wired remote controller (Fig. 7-3)  
1 Turn on the power.  
CHECK  
2 Press the [CHECK] button twice.  
3 Set refrigerant address with [TEMP] button if system control is used.  
4 Press the [ON/OFF] button to stop the self-check.  
ACHECK button  
ERROR CODE  
TEMP.  
ON/OFF  
ON/OFF  
TEMP  
C
MENU  
MONITOR/SET  
ON/OFF  
DAY  
FILTER  
BRefrigerant address  
4
2
BACK  
CHECK TEST  
CLEAR  
CTEMP. button  
PAR-21MAA  
CLOCK  
OPERATION  
DIC: Indoor unit  
OC: Outdoor unit  
FAN  
MODE VANE  
CHECK LOUVER  
TEST RUN  
AUTO STOP  
AUTO START  
h
ECheck code  
A
FUnit address  
3
min  
7.3.2. Wireless remote controller (Fig. 7-4)  
ERROR CODE  
SET  
RESET  
CLOCK  
1 Turn on the power.  
CHECK  
2 Press the  
button twice.  
B
E
(Start this operation from the status of remote controller display turned off.)  
A
begins to light.  
CHECK  
B00begins to blink.  
ERROR CODE  
h
Fig. 7-4  
3 While pointing the remote controller toward the units receiver, press the  
button. The check code will be indicated by the number of times that the buzzer  
sounds from the receiver section and the number of blinks of the operation lamp.  
4 Press the ON/OFF button to stop the self-check.  
F
Fig. 7-3  
Refer to the following tables for details on the check codes. (Wireless remote controller)  
[Output pattern A]  
Beeper sounds  
Beep  
Beep Beep Beep  
Beep  
nth  
Beep  
1st  
Beep  
OPERATION  
INDICATOR  
lamp flash  
pattern  
1st  
2nd  
3rd  
2nd · · · Repeated  
Off  
On  
On  
On  
Off  
On  
On  
On  
0.5 sec.  
Approx. 2.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.  
Approx. 2.5 sec. 0.5 sec. 0.5 sec.  
Self-check  
starts  
(Start signal  
received)  
Number of flashes/beeps in pattern indicates the check  
code in the following table (i.e., n=5 for P5)  
Number of flashes/beeps in pattern indicates  
the check code in the following table  
[Output pattern B]  
Beeper sounds  
Beep  
Beep Beep Beep  
Beep  
nth  
Beep  
1st  
Beep  
OPERATION  
INDICATOR  
lamp flash  
pattern  
1st  
2nd  
3rd  
2nd · · · Repeated  
Off  
On  
On  
On  
On  
On  
Off  
On  
On  
On  
Approx. 2.5 sec.  
Approx. 3 sec.  
0.5 sec. 0.5 sec. 0.5 sec.  
0.5 sec. Approx. 2.5 sec.  
Approx. 3 sec.  
0.5 sec. 0.5 sec.  
Self-check  
starts  
(Start signal  
received)  
Number of flashes/beeps in pattern indicates the check  
code in the following table (i.e., n=5 for U2)  
Number of flashes/beeps in pattern indicates  
the check code in the following table  
[Output pattern A] Errors detected by indoor unit  
Wired remote  
Wireless remote controller  
controller  
Beeper sounds/OPERATION  
Symptom  
Remark  
INDICATOR lamp flashes  
Check code  
(Number of times)  
1
P1  
Intake sensor error  
2
P2, P9  
E6, E7  
P4  
Pipe (Liquid or 2-phase pipe) sensor error  
Indoor/outdoor unit communication error  
Drain sensor error  
3
4
5
P5  
Drain pump error  
6
P6  
Freezing/Overheating safeguard operation  
Communication error between indoor and outdoor units  
Pipe temperature error  
7
EE  
P8  
8
9
10  
E4  
Remote controller signal receiving error  
11  
12  
Fb  
Indoor unit control system error (memory error, etc.)  
No corresponding  
No sound  
– –  
13  
7. Test run  
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)  
Wired remote  
Wireless remote controller  
controller  
Beeper sounds/OPERATION  
Symptom  
Remark  
INDICATOR lamp flashes  
Check code  
(Number of times)  
1
2
E9  
Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)  
Compressor overcurrent interruption  
UP  
3
U3, U4  
UF  
Open/short of outdoor unit thermistors  
4
Compressor overcurrent interruption (When compressor locked)  
Abnormal high discharging temperature/49C worked/insufficient refrigerant  
Abnormal high pressure (63H worked)/Overheating safeguard operation  
Abnormal temperature of heat sink  
5
U2  
6
U1, Ud  
U5  
7
For details, check the LED display  
of the outdoor controller board.  
8
U8  
Outdoor unit fan safeguard stop  
9
U6  
Compressor overcurrent interruption/Abnormal of power module  
Abnormality of super heat due to low discharge temperature  
Abnormality such as overvoltage or voltage shortage and abnormal synchronous  
signal to main circuit/Current sensor error  
10  
11  
U7  
U9, UH  
12  
13  
14  
Others  
Other errors (Refer to the technical manual for the outdoor unit.)  
*1 If the beeper does not sound again after the initial two beeps to confirm the self-check start signal was received and the OPERATION INDICATOR lamp does not come on,  
there are no error records.  
*2 If the beeper sounds three times continuously beep, beep, beep (0.4 + 0.4 + 0.4 sec.)after the initial two beeps to confirm the self-check start signal was received, the  
specified refrigerant address is incorrect.  
On wireless remote controller  
The continuous buzzer sounds from receiving section of indoor unit.  
Blink of operation lamp  
On wired remote controller  
Check code displayed in the LCD.  
If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause.  
Symptom  
Cause  
Wired remote controller  
LED 1, 2 (PCB in outdoor unit)  
For about 2 minutes following power-on, operation of the  
remote controller is not possible due to system start-up. (Cor-  
rect operation)  
For about 2  
minutes following  
power-on  
After LED 1, 2 are lighted, LED 2 is turned off,  
then only LED 1 is lighted. (Correct operation)  
PLEASE WAIT  
Connector for the outdoor units protection device is not con-  
nected.  
Reverse or open phase wiring for the outdoor units power  
terminal block (L1, L2, GR)  
PLEASE WAIT Error code  
Only LED 1 is lighted. LED 1, 2 blink.  
After about 2  
minutes has  
expired following  
power-on  
Incorrect wiring between indoor and outdoor units (incorrect  
polarity of S1, S2, S3)  
Display messages do not appear even  
when operation switch is turned ON  
(operation lamp does not light up).  
Only LED 1 is lighted. LED 1 blinks twice,  
LED 2 blinks once.  
Remote controller wire short  
On the wireless remote controller with condition above, following phenomena takes place.  
No signals from the remote controller are accepted.  
OPE lamp is blinking.  
The buzzer makes a short pipng sound.  
Note:  
Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)  
For description of each LED (LED 1, 2, 3) provided on the indoor controller, refer to the following table.  
LED 1 (power for microcomputer)  
LED 2 (power for remote controller)  
Indicates whether control power is supplied. Make sure that this LED is always lit.  
Indicates whether power is supplied to the remote controller. This LED lights only in the case of the  
indoor unit which is connected to the outdoor unit refrigerant address 0.  
LED 3 (communication between indoor and outdoor units only A-control  
)
Indicates state of communication between the indoor and outdoor units. Make sure that this LED is  
always blinking.  
14  
8. Easy maintenance function [This function only for A-control]  
Display example (Comp discharge temperature 147°F)  
By using the maintenance mode, you can display many types of maintenance data  
on the remote controller such as the heat exchanger temperature and compressor  
current consumption for the indoor and outdoor units.  
A
C
B
This function can be used whether the air conditioner is operating or not.  
During air conditioner operation, data can be checked during either normal operation  
or maintenance mode stable operation.  
* This function cannot be used during the test run.  
* The availability of this function depends on the connecting outdoor unit. Refer to the  
brochures.  
D
Maintenance mode operation procedures  
(1) Press the  
button for three seconds to  
TEST  
MAINTENANCE  
Display A  
activate the maintenance mode.  
(2) Press the TEMP.  
buttons to set the refrigerant address.  
Display B  
(3) Select the data you want to display.  
Cumulative  
operation time  
Operation  
current  
Compressor  
information  
ON/OFF  
number  
COMP ON  
x10 HOURS  
COMP ON  
x100 TIMES  
COMP ON  
CURRENT (A)  
Display A  
MENU  
Heat exchanger  
temperature  
Outdoor ambient  
temperature  
Comp discharge  
temperature  
Outdoor unit  
information  
OUTDOOR UNIT  
H·EXC. TEMP  
OUTDOOR UNIT  
OUTLET TEMP  
OUTDOOR UNIT  
OUTDOOR TEMP  
Display A  
ON/OFF  
Stable operation  
Indoor room  
temperature  
Filter operation  
time  
Heat exchanger  
temperature  
Using the maintenance mode, the operation frequency can be fixed and the op-  
eration can be stabilized. If the air conditioner is stopped, use the following proce-  
dure to start this operation.  
Indoor unit  
information  
INDOOR UNIT  
INLET TEMP  
INDOOR UNIT  
H·EXC. TEMP  
INDOOR UNIT  
FILTER USE H  
Display A  
* The filter operation time displayed is the number of hours the filter has been  
used since the filter reset was performed.  
Press the  
button to select the operation mode.  
MODE  
Stable cooling  
operation  
Stable operation  
cancellation  
Stable heating  
operation  
COOL  
STABLE MODE  
(4) Press the  
button.  
HEAT  
STABLE MODE  
FILTER  
STABLE MODE  
CANCEL  
Display A  
(Airflow temperature display example)  
Flashing  
(5) The data is displayed in C.  
Press the  
button.  
FILTER  
Display C  
Approx.  
10 sec.  
147°F  
Waiting for  
response  
Stable  
operation  
Waiting for stable  
operation  
* Repeat steps (2) to (5) to check another date.  
Display D  
10-20 min.  
(6) Press the  
button for three seconds or press the  
button to  
ON/OFF  
TEST  
* You can check the data using steps (3) to (5) of the maintenance mode opera-  
tion procedures while waiting for the stable operation.  
deactivate the maintenance mode.  
15  
This product is designed and intended for use in the residential,  
commercial and light-industrial environment.  
Please be sure to put the contact address/telephone number on  
this manual before handing it to the customer.  
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN  
Printed in Japan  
BG79U874H01  

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