Friedrich Air Conditioner SV12A10 User Manual

Room Air Conditioner  
Service and Parts  
Manual  
Off  
Med  
Fan  
High  
Cool  
Low  
Fan  
Med  
Cool  
Temperature  
Mode  
Warmer  
Cooler  
Low Cool  
Slider Casement  
115Volts SV08A10 SV10A10 SV12A10  
SV08 / SV10 / SV12 (01/03)  
1.3 SPECIFICATIONS  
1.3.1 FOR SV08A10 / SV10A10 / SV12A10  
MODELS  
SV08A10  
SV10A10  
SV12A10  
ITEMS  
115V, 60Hz  
10,000  
1,050  
POWER SUPPLY  
COOLING CAPACITY  
INPUT  
8,000  
840  
12,000  
1,260  
11.5  
(Btu/h)  
(W)  
7.7  
9.6  
RUNNING CURRENT  
(A)  
.
9.5  
E.E.R  
(BTU/W h)  
OPERATING  
26.7(DB)*  
35(DB)*  
19.4(WB)**  
23.9(WB)**  
INDOOR (°C)  
OUTDOOR (°C)  
CONDITION  
460g(16.2 oz)  
530g(18.7 oz)  
510g(18.0 oz)  
REFRIGERANT (R-22) CHARGE  
EVAPORATOR  
2 ROW 16 STACKS, SLIT FIN TYPE  
3 ROW 16 STACKS, SLIT FIN TYPE  
2 ROW 23 STACKS,  
LOUVER FIN TYPE  
TURBO FAN  
AXIAL FAN  
CONDENSER  
FAN, INDOOR  
FAN, OUTDOOR  
2/3  
FAN SPEEDS, FAN/COOLING  
FAN MOTOR  
6 POLES  
ROTARY SWITCH  
THERMOSTAT  
OPERATION CONTROL  
ROOM TEMP. CONTROL  
VERTICAL LOUVER (RIGHT & LEFT)  
HORIZONTAL LOUVER (UP & DOWN)  
TOP-DOWN CHASSIS  
AIR DIRECTION CONTROL  
CONSTRUCTION  
OVERLOAD PROTECTOR  
COMPRESSOR  
PROTECTOR  
INTERNAL THERMAL PROTECTOR  
3 WIRE WITH GROUNDING  
FAN MOTOR  
POWER CORD  
ATTACHMENT PLUG (CORD-CONNECTED TYPE)  
DRAIN PIPE SPLASHED BY FAN SLINGER  
DRAIN SYSTEM  
66/30  
77/35  
79/36  
NET WEIGHT  
(lbs/kg)  
(inch)  
(mm)  
141/2 x 201/2 x 233/5  
368 x 521 x 607  
OUTSIDE DIMENSION  
(W x H x D)  
* DB:Dry Bulb  
**WB:Wet Bulb  
—3—  
1.4 FEATURES  
• Built-in adjustable THERMOSTAT  
• Washable one-touch filter  
• Compact size  
• Designed for COOLING ONLY.  
• Powerful and whispering cooling.  
• Simple installation and service.  
• Low air-intake, top cooled-air discharge.  
• Reliable and efficient rotary compressor is equipped.  
1.5 CONTROL LOCATIONS  
1.5.1 COOLING ONLY MODEL  
• VENTILATION  
The ventilation lever must be in the CLOSE position  
in order to maintain the best cooling conditions.  
When a fresh air is necessary in the room, set the  
ventilation lever OPEN position.  
The damper is opened and room air is exhausted.  
CLOSE  
VENT  
OPEN  
• TEMPERATURE  
Thermostat will automatically control the temperature  
of the room. Select a higher grade for a cooler  
temperature in the room. The temperature is selected  
by moving the knob to the desired position.  
• MODE  
- Turns air conditioner off.  
Off  
- Med speed fan operation without cooling.  
- Low speed fan operation without cooling.  
- Cooling with high speed fan operation.  
- Cooling with med speed fan operation.  
- Cooling with low speed fan operation.  
Med  
Fan  
High  
Cool  
Low  
Fan  
Med  
Cool  
Temperature  
Mode  
Warmer  
Cooler  
Low Cool  
NOTE!  
Before using the air conditioner  
secure the front grille with two screws  
enclosed with the owners manual.  
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1. Open the inlet grille downward and  
remove the air filter.  
2. Fasten the front grille with screws.  
3. Reinstall the air filter.  
4. Close the inlet grille.  
Inlet Grille  
—4—  
2. DISASSEMBLY INSTRUCTIONS  
Before the following disassembly, set POWER SWITCH to OFF and disconnect the power cord.  
2.1 MECHANICAL PARTS  
2.1.1 FRONT GRILLE  
1. Open the inlet grille downward and remove the air  
filter.  
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2. Remove the screws which fasten the front  
grille.(See Figure 1)  
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3. Pull the front grille from the right side.  
4. Remove the front grille.(There are 4 hooks.)  
5. Re-install the components by referring to the  
removal procedure, above.  
2.1.2 CABINET  
Inlet Grille  
1. After disassembling the FRONT GRILLE, remove  
the 6 screws which fasten the cabinet at both  
sides.(See Figure 2)  
Figure 1  
2. Remove the 4 screws which fasten the cabinet at  
back.  
3. Remove the cabinet.  
4. Re-install the components by referring to the  
removal procedure, above.  
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2.1.3 CONTROL BOX  
1. Remove the front grille. (Refer to section 2.1.1)  
2. Remove the cabinet. (Refer to section 2.1.2)  
3. Remove the 1 screw which fasten the power cord.  
(See Figure 3)  
4. Disconnect the grounding screw from the  
evaporator channel.  
Figure 2  
5. Remove the 2 screws which fasten the control  
box.(See Figure 3)  
6. Remove the housing which connects motor wire  
in the control box.  
7. Remove three leads which connect compressor.  
8. Discharge the capacitor by placing a 20,000 ohm  
resistor across the capacitor terminals.  
9. Raise the control box upward completely.  
10. Re-install the components by referring to the  
removal procedure, above.  
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(Refer to the circuit diagram found on pages  
21~22 in this manual and on the control box.)  
Figure 3  
5—  
2.2 AIR HANDLING PARTS  
2.2.1 AIR GUIDE AND TURBO FAN  
1. Remove the front grille. (Refer to section 2.1.1)  
2. Remove the cabinet. (Refer to section 2.1.2)  
3. Remove the control box. (Refer to section 2.1.3)  
4. Remove the 4 screws which fasten the brace.  
5. Remove the brace.  
6. Remove the 2 screws which fasten the upper air  
guide. (See Figure 4)  
7. Remove the upper air guide.  
8. Remove the 2 screws which fasten the  
evaporator.  
Figure 4  
9. Move the evaporator forward and pulling it upward  
slightly. (See Figure 5)  
10. Remove orifice by pulling two taps.  
11. Remove the clamp with a hand plier which  
secures the turbo fan.  
12. Remove the turbo fan. (See Figure 6)  
13. Remove the motor. (Refer to section 2.3.7)  
14. Remove the 2 screws which fasten the lower air  
guide from the base pan.  
15. Remove the 2 screws which fasten the motor  
mount from the base pan.  
16. Remove the 2 screws which fasten the lower air  
guide and motor mount.  
Figure 5  
17. Move the lower air guide backward and pull out  
from the base pan. (Move the lower air giude  
carefully.)  
18. Re-install the components by referring to the  
removal procedure, above.  
2.2.2 FAN  
1. Remove the cabinet. (Refer to section 2.1.2)  
2. Remove the brace (Refer to section 2.2.1)  
3. Remove 6 screws which fasten the condenser.  
4. Move the condenser to the right carefully.  
Figure 6  
5. Remove the clamp with a hand plier which secures the  
fan.  
6. Remove the fan. (See Figure 7)  
7. Re-install by referring to the removal procedure.  
Figure 7  
6—  
2.2.3 SHROUD  
1. Remove the fan. (Refer to section 2.2.2)  
2. Remove the shroud. (See Figure 8)  
3. Re-install the components by referring to the  
removal procedure, above.  
Figure 8  
2.3 ELECTRICAL PARTS  
2.3.1 OVERLOAD PROTECTOR  
1. Remove the cabinet. (Refer to section 2.1.2)  
2. Remove the nut which fastens the terminal cover.  
3. Remove the terminal cover. (See Figure 9)  
4. Remove all the leads from the overload protector.  
5. Remove the overload protector.  
6. Re-install the components by referring to the  
removal procedure, above.  
2.3.2 COMPRESSOR  
Figure 9  
1. Remove the cabinet. (Refer to section 2.1.2)  
2. Discharge the refrigerant system using a FreonTM  
Recovery System.  
If there is no valve to attach the recovery system,  
install one (such as a WATCO A-1) before venting  
the FreonTM. Leave the valve in place after  
servicing the system.  
3. Remove the overload protector. (Refer to section  
2.3.1)  
4. After purging the unit completely, unbraze the  
suction and discharge tubes at the compressor  
connections.  
5. Remove the 3 nuts and the 3 washers which  
fasten the compressor.  
6. Remove the compressor. (See Figure 10)  
7. Re-install the components by referring to the  
removal procedure, above.  
Figure 10  
7—  
2.3.3 CAPACITOR  
1. Remove the cabinet. (Refer to section 2.1.2)  
2. Remove the screw and the clamp which fastens the  
capacitor.  
3. Disconnect all the leads of capacitor terminals.  
4. Re-install the components by referring to the  
removal procedure, above. (See Figure 11)  
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Fa  
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Off  
Cooler  
High  
Cool  
Lo  
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Cool  
Med  
Cool  
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Figure 11  
2.3.4 POWER CORD  
1. Remove the cabinet. (Refer to section 2.1.2)  
2. Disconnect the grounding screw from the control  
box.  
3. Disconnect the 2 receptacles.  
4. Remove a screw which fastens the clip cord.  
(See Figure 12)  
5. Remove the power cord.  
6. Re-install the component by referring to the above  
removal procedure, above.  
Figure 12  
(Use only one ground-marked hole  
connection.)  
for ground  
7. If the supply cord of this appliance is damaged, it  
must be replaced by the special cord. (The  
special cord means the cord which has the same  
specification marked on the supply cord attached at  
the unit.)  
2.3.5 THERMOSTAT  
1. Remove the cabinet. (Refer to section 2.1.2)  
2. Remove the 2 screws which fasten the thermostat.  
3. Disconnect 2 leads of thermostat terminals.  
4. Remove the thermostat.  
Figure 13  
5. Re-install the components by refering to the above  
removal procedure. (See Figure 13)  
2.3.6 ROTARY SWITCH  
1. Remove the cabinet. (Refer to section 2.1.2)  
2. Remove the 2 screws which fasten the rotary  
switch.  
3. Disconnect all the leads of the rotary switch  
terminals.  
4. Remove the rotary switch.  
5. Re-install the components by referring to the  
above removal procedure. (See Figure 14)  
Figure 14  
8—  
2.3.7 MOTOR  
1. Remove the cabinet. (Refer to section 2.1.2)  
2. Remove the turbo fan. (Refer to section 2.2.1)  
3. Remove the fan. (Refer to section 2.2.2)  
4. Remove the 4 screws which fasten the motor from  
the Motor Mount. (See Figure 15)  
5. Remove the motor.  
6. Re-install the components by referring to the  
removal procedure, above.(See Figure 15)  
2.4 REFRIGERATING CYCLE  
2.4.1 CONDENSER  
Figure 15  
CAUTION  
Discharge the refrigerant system using a  
FreonTM Recovery System.  
If there is no valve to attach the recovery  
system, install one (such as a WATCO A-1)  
before venting the FreonTM. Leave the valve in  
place after servicing the system.  
1. Remove the cabinet. (Refer to section 2.1.2)  
2. Remove the 4 screws which fasten the brace.  
3. Remove the 4 screws which fasten the condenser  
and shroud. (See Figure 16)  
4. Remove the 2 screws which fasten the condenser  
and base pan.  
5. After discharging the refrigerant completely,  
unbraze the interconnecting tube at the condenser  
connections.  
Figure 16  
6. Remove the condenser.  
7. Re-install the components by referring to notes.  
(See Figure 16)  
2.4.2 EVAPORATOR  
1. Remove the cabinet. (Refer to section 2.1.2)  
2. Remove the control box.(Refer to section 2.1.3)  
3. Remove the upper air guide. (Refer to section  
2.2.1)  
4. Remove the 2 screws which fasten the evaporator  
from lower air guide.  
5. Move the evaporator sideways carefully.  
(Refer to section 2.2.1)  
6. After discharging the refrigerant completely,  
unbraze the interconnecting tube at the evaporator  
connections.  
Figure 17  
7. Remove the evaporator.  
8. Re-install the components by referring to notes.  
(See Figure 17)  
9—  
2.4.3 CAPILLARY TUBE  
3. Remove the capillary tube.  
4. Re-install the components by referring to notes.  
1. Remove the cabinet. (Refer to section 2.1.2)  
2. After discharging the refrigerant completely,  
unbraze the interconnecting tube at the capillary  
tube.(See caution above)  
NOTES  
Replacement of the refrigerant.  
6. Recharge as follows :  
1. When replacing the refrigerant, be sure to  
TM  
Discharge the refrigerant system using a Freon  
recovery System.  
1) Refrigeration cycle systems are charged from  
the High-side. If the total charge cannot be put  
in the High-side, the balance will be put in the  
suction line through the access valve which you  
installed as the system was opened.  
2) Connect the charging cylinder as shown in figure  
18B.  
If there is no valve to attach the recovery system,  
install one (such as a WATCO A-1) before venting  
TM  
the Freon . Leave the valve in place after  
servicing the system.  
2. After discharging the unit completely, remove the  
desired component, and unbraze the pinch-off  
tubes.  
With valve C open, discharge the hose at the  
manifold connection.  
3. Solder service valves into the pinch-off tube ports,  
leaving the valves open.  
4. Solder the pinch-off tubes with Service valves.  
5. Evacuate as follows.  
3) Open valve A and allow the proper charge to  
enter the system. Valve B is still closed.  
4) If more charge is required, the high-side will not  
take it. Close valve A.  
1) Connect the vacuum pump, as illustrated figure  
18A.  
5) With the unit running, open valve B and add the  
balance of the charge.  
2) Start the vacuum pump, slowly open manifold  
valves A and B with two full turns  
counterclockwise and leave the valves open.  
The vacuum pump is now pulling through valves  
A and B up to valve C by means of the manifold  
and entire system.  
a. Do not add the liquid refrigerant to the Low-  
side.  
b. Watch the Low-side gauge; allow pressure to  
rise to 30 lbs.  
c. Turn off valve B and allow pressure to drop.  
d. Repeat steps b. and c. until the balance of the  
charge is in the system.  
CAUTION  
6) When satisfied the unit is operating correctly,  
use the pinch-off tool with the unit still running  
and clamp on to the pinch-off tube. Using a tube  
cutter, cut the pinch-off tube about 2 inches from  
the pinch-off tool. Use sil-fos solder and solder  
pinch-off tube closed. Turn off the unit, allow it to  
set for a while, and then test the leakage of the  
pinch-off connection.  
If high vacuum equipment is used, adjust valves  
A and B so they are opened only slightly for a few  
minutes, then open slowly with the two full turns  
counterclockwise. This will keep oil from foaming  
and being drawn into the vacuum pump.  
3) Operate the vacuum pump for 20 to 30 minutes,  
until 600 microns of vaccum is obtained. Close  
valves A and B, and observe vacuum gauge for  
a few minutes. A rise in pressure would  
indicate a possible leak or moisture remaining in  
the system. With valves A and B closed, stop  
the vacuum pump.  
4) Remove the hose from the vacuum pump and  
place it on the charging cylinder. See figure  
18B.  
Open valve C.  
Discharge the line at the manifold connection.  
5) The system is now ready for final charging.  
10—  
Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment. Pin-off tool capable  
of making a vapor-proof seal, Leak detector, Tubing cutter, Hand Tools to remove components, Service valve.  
COMPOUND GAUGE  
CONDENSER  
(HIGH PRESSURE SIDE)  
MANIFOLD  
GAUGE  
A
B
CAPILLARY TUBE  
SEE INSETS  
BELOW  
EVAPORATOR  
(LOW PRESSURE SIDE)  
COMPRESSOR  
HI  
LOW  
A
A
B
B
EXTERNAL  
VACUUM PUMP  
CHARGING  
CYLINDER  
C
Figure 18B-Charging  
Figure 18A-Pulling Vacuum  
11—  
3. INSTALLATION  
3.1 HOW TO INSTALL THE UNIT  
Awning  
Fence  
1. To avoid vibration and noise, make sure the unit is  
installed securely and firmly.  
2. Install the unit where the sunlight does not shine directly  
on the unit.  
Cooled air  
Heat  
radiation  
If the unit receives direct sunlight, build an awning to  
shade the cabinet.  
3. There should be no obstacle, like a fence, within 20"  
which might restrict heat radiation from the condenser.  
4. To prevent reducing performance, install the unit so that  
louvers of the cabinet are not blocked.  
About 1/4"  
Over 20"  
5. Install the unit a little obliquely outward not to leak the  
condensed water into the room (about 1/4").  
6. Install the unit with its bottom portion 30~60" above the  
floor level.  
Figure 19  
7. Stuff the foam between the top of the unit and the wall to  
prevent air and insects from getting into the room.  
8. The power cord must be connected to an independent  
circuit. The green wire must be grounded.  
9. Connect the drain tube to the base pan hole in the rear  
side if you need to drain (consult a dealer).  
Plastic hose or equivalent may be connected to the drain  
tube.  
3.2 CHECKING INSTALLATION  
The setting conditions must be checked prior to  
initial starting.  
The items mentioned below are especially  
important checking points when the installation is  
finished.  
1. Grounding wire (Green or Green and Yellow) is  
provided in the power cord. The green wire must  
be grounded.  
BASE PAN  
2. Connect to a single-outlet 15A circuit.  
3. To avoid vibration or noise, make sure the air  
conditioner is installed securely.  
BOTTOM  
Figure 20  
1
DRAIN CAP  
4 Avoid placing furniture or draperies in front of the  
air inlet and outlet.  
3.3. HOW TO DRAIN  
(When using drain pipe)  
The air conditioner must be installed horizontally or  
tilted slightly to the outside for proper water  
drainage.  
BASE PAN  
On exceptionally hot and humid days the air  
conditioner may overflow condensed water.  
If the air conditioner is used in hot and a high  
BOTTOM  
2
DRAIN PIPE  
Figure 21  
humidity zone, exchange the  
DRAIN CAP for the  
DRAIN PIPE.(See Figure 20, Figure 21)  
12—  
3.4 WINDOW REQUIREMENTS  
1. These instructions are for a horizontal sliding or a  
casement window.  
2. The electrical outlet must be within reach of the  
power cord.  
For installation in a casement window, the window  
frame assembly and the side of the building must be  
adequate to support the weight of the air conditioner.  
21 1/2" min.  
21" min.  
40 1/2" max.  
15 1/2" min.  
16 1/2" max.  
15 1/  
"
min.2  
Horizontal sliding window  
Casement window  
3.5 INSTALLATION KITS CONTENTS  
Window Locking  
Bracket  
Curtain Frame Curtain  
Side Guide  
Upper Guide  
Bracket  
Support Bracket  
Foam Seal Strip  
Side Guide Seal  
Leveling  
bolt & nut  
Side Guide  
Window Track Seal  
Bolt (2)  
Nut (2)  
Washer (2)  
Type A (9)  
Type B (3)  
Type C (8)  
13—  
3.6 HORIZONTAL SLIDING WINDOW INSTALLATION  
Bolt  
1. Loosely attach the support bracket to the bottom of  
bracket using bolts, washers, and nuts. Attach the  
leveling bolt and nut. (See Figure 22)  
Bracket  
Washer  
Nut  
Leveling Bolt & Nut  
Support Bracket  
Figure 22  
2. Remove protective backing from window track seal  
and apply seal to window track. (See Figure 23)  
Window jamb  
Type C screw  
811/16 inches  
3. Measure and lightly mark a line 8-1/4 inches from  
window jamb. Center the support bracket assembly  
on the window track and fasten with 4-type C screws.  
(See Figure 23)  
Window Track  
Seal  
Window Track  
Figure 23  
4. Put the support bracket against the outside wall and  
tighten the bolts on top of the bracket. Adjust the  
leveling bolt so that the air conditioner will be installed  
with a very slight tilt (about 1/4") downward toward the  
outside for proper drainage.  
Outside W  
all  
Tighten the nut. (See Figure 24)  
about 1/4"  
Figure 24  
NOTE: DO NOT drill a hole in the bottom of the base  
pan. The air conditioner is designed to operate  
with the bottom of the base pan approximately  
half-full of water.  
Fastening Side Guides  
Upper Guide  
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5. Fasten side guides to the sides of the air conditioner  
using 3-type A screws per guide. start with first screw  
at middle of guide. (See Figure 25)  
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Side Guide  
Figure 25  
6. Fasten upper guide on the top of the air conditioner  
using 3-type A screws. (See Figure 25)  
7. Measure height of window opening from top of  
bracket assembly as shown Fig. 26.  
Subtract 20-3/4 inches. Mark this measurement on  
curtain and cut the curtain. (See Figure 26)  
Figure 26  
—14—  
8. Slide curtain into curtain frame. Slide curtain frame  
assembly into side guides of the air conditioner  
cabinet. Make sure curtain is firmly enclosed on all  
sides by the frame. (See Figure 27)  
Curtain Frame  
Figure 27  
Curtain  
9. Cut side guide seal into 2 equal lengths. Remove  
protective backing and apply it to the rear side of  
cabinet side guides, starting just below curtain frame  
assembly. Pinch off excess length so seal is even with  
the bottom of side guide. (See Figure 28)  
10. Place air conditioner in window opening. It should sit  
on bracket assembly so that curtain frame and  
cabinet side guides are against top and side window  
jambs. Mate front of bracket with base guide  
attached to the bottom of base pan.  
Apply weather seal  
to side guides  
just below edge of  
Curtain Frame.  
11. Drill 1/8 inch holes in window track through the  
existing holes on base guide. Screw 4-type C screws  
through the holes. (See Figure 29)  
Figure 28  
12. If this is a casement window installation, proceed to  
casement window installation. If not, slide inner  
window sash firmly against side of the cabinet.  
13. Drill 1/8 inch hole in window jamb to align with the  
existing holes in the curtain frame. Attach curtain  
frame to window frame with 2-type B screws. (See  
Figure 29)  
Base pan  
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ff  
ler  
Hi  
gh  
Coo  
Lo  
Fa  
l
w
n
L
C
ool  
Me  
Coo  
d
l
M
od  
e
Bracket  
Base Guide  
NOTE: Check all seals and plug any remaining air gaps  
with a suitable weatherproof caulk.  
14. If this is a casement window installation, proceed to  
casement window installation. If not, stuff the foam  
seal strip between the vertical sash and the window  
glass. (See Figure 30)  
15. Attach the window locking bracket with a type B  
screw. (See Figure 30)  
Type B screw  
Type C screw  
Window Track  
Figure 29  
Foam seal strip  
3.7 CASEMENT WINDOW  
INSTALLATION  
Installation procedure is the same as that described in  
steps 1 through 11 and step 13 of the horizontal sliding  
window installation.  
T
e
m
pe  
ra  
tu  
re  
W
ar  
m
Me  
Fa  
er  
d
n
O
ff  
l  
er  
Hi  
Cogh  
ol  
Lo  
Fa  
w
n
Lo  
o  
Me  
ol  
Co  
d
M
od  
e
If the window opening is wider than 15-3/4 inches you  
will need to install a filler panel. Make this panel from  
3/4 inch thick wood and run it the full length of the  
window. Attach it securely to the window frame and  
paint it to protect it from the weather.  
Window  
locking  
bracket  
Since styles and sizes of casement windows vary  
widely, it is advisable to have the air conditioner  
installed by someone skilled in this type of installation.  
Figure 30  
15—  
4. TROUBLESHOOTING GUIDE  
4.1 OUTSIDE DIMENSIONS  
Unit: mm(inchs)  
3
1
607(23 / )  
368(14 / )  
5
2
4.2 PIPING SYSTEM  
CONDENSER COIL  
FAN  
CAPILLARY TUBE  
COMPRESSOR  
MOTOR  
TURBO FAN  
EVAPORATOR COIL  
Following is a brief description of the important components and their functions in the refrigeration system.  
Refer to Fig. 31 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle.  
ROOM AIR CONITIONER  
CYCLE OF REFRIGERATION  
EVAPORATOR COILS  
CONDENSER COILS  
VAPOR INLET  
SUCTION LINE  
COOL LOW PRESSURE VAPOR  
HOT  
DISCHARGED  
AIR  
COMPLETE LIQUID  
BOIL OFF POINT  
COOLED  
AIR  
ROOM AIR HEAT LOAD  
OUTSIDE COOLING  
AIR FOR REFRIGERANT  
PASS THROUGH  
MOTOR  
COMPRESSOR  
OIL  
LIQUID  
PRESSURE  
DROP  
LIQUID OUTLET  
HIGH PRESSURE VAPOR  
(LIQUID REFRIGERANT)  
LIQUID REFRIGERANT  
LOW PRESSURE VAPOR  
CAPILLARY TUBE  
Figure 31  
16—  
4.3 TROUBLESHOOTING GUIDE  
In general, possible trouble is classified in two kinds.  
The one is called Starting Failure which is caused from an electrical defect, and the other is ineffective Air  
Conditioning caused by a defect in the refrigeration circuit and improper application.  
Unit runs but poor cooling.  
Ineffective Cooling  
Check cold air circulation  
for smooth flow.  
Check outdoor coil  
(heat exchanger) & the fan  
operation.  
Check heat load  
increase.  
Clean condenser.  
Dirty indoor coil  
(Heat exchanger)  
Check gas leakage.  
Repair gas leak.  
Not on separate circuit.  
Malfunction of fan  
Clogged of air filter.  
Check inside gas  
pressure.  
Replace of unit if the  
unit is beyond repair.  
Obstruction at air outlet  
Correct above problem  
Adjusting of refrigerant  
charge.  
Malfunction of compressor.  
Check clogging in refrigera-  
tion system.  
Replacement of  
compressor.  
Satisfactory operation with  
temperature difference of  
inlet & outlet air ;  
Repair clogging in refrigera-  
tion system.  
44~50°F(7~10°C)  
17—  
Fails to Start  
Check of power source.  
Check circuit breaker  
and fuse.  
Check of control switch  
setting.  
Gas leakage of feeler bulb  
of thermostat  
Check of control switch.  
Compressor only fails to  
start.  
Fan only fails to start.  
Improper wiring.  
Drop of power voltage.  
Improper thermostat setting.  
Defect of fan motor  
capacitor.  
Defect of compressor  
capacitor.  
Loose terminal connection.  
Improper wiring.  
Irregular motor resistance  
(
).  
Irregular motor insulation  
).  
Capacitor check.  
Replacement  
(
Replacement of fan motor.  
Irregular motor resistance (  
Irregular motor insulation (  
)
Tests normal but fails to start.  
)
Replacement of compressor  
(locking of rotor, metal).  
Replacement of compressor  
(Motor damaged)  
18—  
ROOM AIR CONDITIONER VOLTAGE LIMITS  
NAME PLATE RATING  
MINIMUM  
MAXIMUM  
115V ±10%  
103.5V  
126.5V  
COMPLAINT  
CAUSE  
REMEDY  
Fan motor will not run.  
No power  
Check voltage at outlet. Correct if none.  
Power supply cord  
Check voltage to rotary switch. If none, check power  
supply cord. Replace cord if circuit is open.  
Rotary switch  
Check switch continuity. Refer to wiring diagram for  
terminal identification. Replace switch if defective.  
Wire disconnected or  
connection loose  
Connect wire. Refer to wiring diagram for terminal  
identification. Repair or replace loose terminal.  
Capacitor (Discharge  
capacitor before testing.)  
Test capacitor.  
Replace if not within ±10% of manufacturer's rating.  
Replace if shorted, open, or damaged.  
Will not rotate  
Fan blade hitting shroud or blower wheel hitting  
scroll. Realign assembly.  
Units using slinger ring for condenser fan must have  
1/4 to 5/16 inch clearance to the base. If it hits the  
base, shim up the bottom of the fan motor with  
mounting screw(s).  
Check fan motor bearings; if motor shaft will not  
rotate, replace the motor.  
Revolves on overload.  
Check voltage. If not within limits, call an electrician.  
Fan motor runs  
intermittently  
Test capacitor.  
Check bearings. Does the fan blade rotate freely?  
If not, replace fan motor.  
Pay attention to any change from high speed to  
low speed. If the speed does not change, replace the  
motor.  
Fan  
If cracked, out of balance, or partially missing,  
replace it.  
Fan motor noise.  
Blower  
If cracked, out of balance, or partially missing,  
replace it.  
Loose clamper  
Worn bearings  
Tighten it.  
If knocking sounds continue when running or loose,  
replace the motor. If the motor hums or noise  
appears to be internal while running, replace motor.  
Check voltage.  
If not within limits, call an electrician.  
Compressor will not run,  
but fan motor runs.  
Voltage  
Wiring  
Check the wire connections, if loose, repair or  
replace the terminal. If wires are off, refer to wiring  
diagram for identification, and replace. Check wire  
locations. If not per wiring diagram, correct.  
Check for continuity, refer to the wiring diagram for  
terminal identification. Replace the switch if circuit is  
open.  
Rotary  
19—  
COMPLAINT  
CAUSE  
Thermostat  
REMEDY  
Compressor will not run,  
but fan motor runs.  
Check the position of knob If not at the coldest  
setting, advance the knob to this setting and restart  
unit.  
Check continuity of the thermostat. Replace  
thermostat if circuit is open.  
Capacitor (Discharge  
Check the capacitor.  
capacitor before servicing.) Replace if not within ±10% of manufacturers rating.  
Replace if shorted, open, or damaged.  
Compressor  
Check the compressor for open circuit or ground. If  
open or grounded, replace the compressor.  
Overload  
Check the compressor overload, if externally  
mounted. Replace if open. (If the compressor  
temperature is high, remove the overload, cool it,  
and retest.)  
Compressor cycles on  
overload.  
Voltage  
Check the voltage.  
If not within limits, call an electrician.  
Overload  
Check overload, if externally mounted.  
Replace if open. (If the compressor temperature is  
high, remove the overload, cool, and retest.)  
Fan motor  
If not running, determine the cause. Replace if  
required.  
Compressor cycles on  
overload.  
Condenser air flow  
restriction  
Remove the cabinet. inspect the interior surface of  
the condenser; if restricted, clean carefully with a  
vacuum cleaner (do not damage fins) or brush.  
Clean the interior base before reassembling.  
Condenser fins (damaged) If condenser fins are closed over a large area on the  
coil surface, head pressures will increase, causing  
the compressor to overload. Straighten the fins or  
replace the coil.  
Capacitor  
Test capacitor.  
Compressor cycles on  
overload.  
Wiring  
Check the terminals. If loose, repair or replace.  
Check the system for a restriction.  
If restricted, clean or replace.  
Close if open.  
Refrigerating system  
Air filter  
Insufficient cooling or  
heating  
Exhaust damper door  
Unit undersized  
Determine if the unit is properly sized for the area to  
be cooled.  
Excessive noise  
Blower or fan  
Copper tubing  
Check the set screw or clamp. If loose or missing,  
correct. If the blower or fan is hitting air guide,  
rearrange the air handling parts.  
Remove the cabinet carefully and rearrange tubing  
not to contact cabinet, compressor, shroud, and  
barrier.  
20—  
5. SCHEMATIC DIAGRAM  
5.1 CIRCUIT DIAGRAM  
I MODEL : SV10A10 / SV12A10  
S: Service Parts  
N: Non Service Parts  
PART NO.  
RE-  
LOCATION  
Q'TY  
PER SET  
DESCRIPTION  
NO.  
MARKS  
SV10A10  
SV12A10  
1
2
3
4
5
6
POWER CORD  
ROTARY SWITCH  
FAN MOTOR  
6411A20011N  
6411A20011P  
1
1
1
1
1
1
S
S
S
S
S
S
2H00598E  
4681A20069C  
CAPACITOR  
6120AR2194P  
2520UKAC2GA  
0CZZA20001N  
2520UKGC2DA  
THERMOSTAT  
COMPRESSOR  
2H01109Q  
21—  
5.2 CIRCUIT DIAGRAM  
I MODEL : SV08A10  
S: Service Parts  
N: Non Service Parts  
PART NO.  
SV08A10  
RE-  
LOCATION  
Q'TY  
PER SET  
DESCRIPTION  
NO.  
MARKS  
1
2
3
4
5
6
POWER CORD  
ROTARY SWITCH  
FAN MOTOR  
6411A20011L  
2H00598E  
1
1
1
1
1
1
S
S
S
S
S
S
4681A20069A  
6120AR2359H  
2H01109M  
CAPACITOR  
THERMOSTAT  
COMPRESSOR  
2520UAGC2AA  
22—  
6. EXPLODED VIEW  
130910  
148000  
554030  
352390  
359011  
349001  
249950  
346811  
349600  
149980  
269310 266003  
354210  
W0CZZ  
T
e
m
p
e
r
a
tu  
r
e
M
F
e
n
d
W
a
a
O
ff  
r
m
e
r
C
o
o
H
C
le  
ig  
o
r
h
l
o
L
F
o
a
w
n
L
o
w
C
o
M
C
o
e
d
l
l
o
o
M
o
d
e
130410  
264110  
352380  
149410  
135312  
359012  
352115  
349480  
152312  
147582-1  
552111  
145200  
147582-2  
567502  
554160  
147581  
352113  
35211A  
135301  
550140  
135303  
23—  
7. REPLACEMENT PARTS LIST  
I MODEL : SV08A10, SV10A10, SV12A10  
P/No  
LOCATION  
DESCRIPTION  
REMARK  
No.  
SV08A10  
SV10A10  
SV12A10  
130410 BASE ASSY, SINGLE  
130910 CABINET ASSY, SINGLE  
135303 GRILLE INLET  
3041A20033J  
3041A20033N  
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
3091A20014A  
3530A20056A  
3531A20123A  
4758A20032A  
135312 GRILLE ASSY, FRONT  
147581 VANE, HORIZONTAL  
147582 VANE, VERTICAL  
148000 BRACE  
4758A20017A / 4758A20017B  
4800A20001A  
149410 KNOB ASSY  
4941A30017A  
149980 SHROUD ASSY  
4999A20002A  
152312 FILTER ASSY  
5231A20012A  
249950 CONTROL BOX ASSY  
264110 POWER CORD ASSY  
266003 SWITCH, ROTARY  
269310 THERMOSTAT ASSEM  
346811 MOTOR ASSY, SINGLE  
349001 DAMPER  
4995A20227Q  
6411A20011L  
4995A20227R  
6411A20011N  
2H00598E  
4995A20227S  
6411A20011P  
2H01109M  
2H01109Q  
4681A20069C  
4900A20006A  
4681A20069A  
349480 ORIFICE  
4948A20012A  
4960A20034A  
349600 MOUNT, MOTOR  
352113 TUBE ASSY, DISCHARGE SINGLE  
352115 TUBE ASSEMBLY, EVAPORATOR  
35211A TUBE ASSY, SUCTION  
352380 AIR GUIDE-LOWER ASSY  
352390 AIR GUIDE ASSY-UPPER  
354210 EVAPORATOR ASSY  
359011 FAN ASSY AXIAL  
359012 FAN ASSY, TURBO  
550140 ISOLATOR, COMP  
552111 TUBE ASSY, CAPILLARY  
554030 CONDENSER ASSY  
554160 COMPRESSOR  
5211A20558A  
5211A20559A  
5211A20555A  
5211A20558C  
5211A20575B  
5211A20579B  
5239A20008A  
5239A20007A  
5421A20115A  
5900A20026A  
5900A20019A  
5211A20575C  
5211A20579C  
5421A20115B  
5421A20115D  
5040AR4195A  
5211A20557A  
5403A20082B  
2520UAGC2AA  
6750U-L048A  
6120AR2359H  
4830AR4335A  
5211A20557H  
5211A20557J  
5403A20082B  
2520UKAC2GA  
6750U-L031A  
6120AR2194P  
2520UKGC2DA  
6750U-L029A  
0CZZA20001N  
567502 O.L.P  
W0CZZ CAPACITOR, DRAWING  
24—  
MEMO  
25—  
MEMO  
26—  
Use Factory Certified Parts...  
FRIEDRICH AIR CONDITIONING CO.  
Post Office Box 1540 • 4200 N. Pan Am Expressway • San Antonio, Texas 78295-1540  
• (210) 357-4400 • FAX (210) 357-4480  
P/NO.: 3828A20190G  
Printed in the U.S.A  
SV08 / SV10 / SV12 (01/03)  

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