Friedrich CP12E10 User Manual

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Room Air Conditioner

Service and Parts

Manual

Mode

Timer

0F

 

0n/0ff

 

Fan Only Cool

 

hr

 

 

 

 

Dry

Money Saver

 

 

Fan

 

Auto

Power

Speed

 

Swing

 

Temp

 

 

CP10E10CP12E10

CP10 CP12 SVC PARTS 2008 (07/08)

Air Conditioner Service Manual

 

TABLE OF CONTENTS

 

Safety Precautions..........................................................................................................................................

3

Dimensions .....................................................................................................................................................

6

Outside Dimensions ...................................................................................................................................

6

Product Specifications ..................................................................................................................................

7

Operation ......................................................................................................................................................

8

How to Operate Your Friedrich CP...........................................................................................................

9

Disassembly ..................................................................................................................................................

10

Mechanical Parts......................................................................................................................................

10

Air Handling Parts ...................................................................................................................................

11

Electrical Parts .........................................................................................................................................

12

Refrigerating Cycle...................................................................................................................................

13

Schematic Diagram.......................................................................................................................................

16

Wiring Diagram.........................................................................................................................................

16

Electronic Control Device.........................................................................................................................

17

Components Location(For Main P.W.B ASM)...........................................................................................

18

Troubleshooting Guide.................................................................................................................................

19

Piping System ........................................................................................................................................

19

Troubleshooting Guide .............................................................................................................................

20

Exploded View ..............................................................................................................................................

28

Replacement Parts List ................................................................................................................................

29

2 Room Air Conditioner

Safety Precautions

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions must be followed.

Incorrect operation due to ignoring instructions will cause harm or damage. The seriousness is classified by the following indications.

WARNING

This symbol indicates the possibility of death or serious injury.

 

 

CAUTION

This symbol indicates the possibility of injury or damage to property only.

Meanings of symbols used in this manual are as shown below.

Be sure not to do.

Be sure to follow the instruction.

WARNING

Always install the expansion panel(s).

Do not place the power cord near a heater.

• Improper assembly or installation may cause

• It may cause fire and electric shock.

incorrect operation, including injury, fire, and

 

electric shock hazards.

 

Do not use the power cord near flammable gas or combustibles such as gasoline, benzene, thinner, etc.

• It may cause explosion or fire.

Do not disassemble or modify products.

• It may cause failure and electric shock.

Service Manual 3

Safety Precautions

Plug in the power plug properly.

Otherwise, it will cause electric shock or fire.

Do not modify power cord length.

It will cause electric shock or fire.

Ventilate before operating air conditionerwhen gas goes out.

It may cause explosion, fire, and burn.

Do not operate or stop the unit by inserting or pulling out the power plug.

It will cause electric shock or fire.

Use the air conditioner on a single outlet circuit.(see page 7.) Do not share the outlet with other appliances.

It will cause electric shock or fire.

Do not use the socket if it is loose or damaged.

It may cause fire and electric shock.

Do not damage or use an unspecified power cord.

It will cause electric shock or fire.

Always plug into a grounded outlet.

No grounding may cause electric shock.

Do not operate with wet hands or in damp environment.

• It will cause electric shock.

4 Room Air Conditioner

Safety Precautions

If water enters the product, turn off the the power switch of the main body of appliance. Contact service center after taking the powerplug out from the socket.

It will cause electric shock or failure of machine.

Do not clean the air conditioner with water.

Water may enter the unit and degrade the insulation. It may cause an electric shock.

CAUTION

Never touch the metal parts of the unit when removing the filter.

• They are sharp and may cause injury.

Do not block the inlet or outlet.

It may cause failure of appliance or performance deteriorate.

Ensure that the outer caseis not damaged by age orwear.

Leaving it damaged couldresult in the air conditioner falling out of the window, creating a safety hazard.

Becautious not to touch the sharp edges when installing.

• It may cause injury.

Sharp edges

Service Manual 5

Dimensions

Dimensions

SymbolsUsedin this Manual

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that could cause harm to the air conditioner.

NOTICE This symbol indicates special notes.

OutsideDimensions

525(20 11/16")

 

 

470(18 1/2")

 

 

 

 

 

 

353(13 7/8")

6 Room Air Conditioner

Specfications

Product Specifications

 

 

 

MODELS

 

CP10E10

 

CP12E10

ITEMS

 

 

 

 

 

 

 

 

 

 

 

 

POWER SUPPLY

 

 

 

1Ø , 115, 60Hz

COOLING CAPACITY

 

(Btu/h)

10,000

 

 

12,000

 

INPUT

 

 

(W)

920

 

 

1,110

 

RUNNING CURRENT

 

 

(A)

8.5

 

 

10.2

 

E.E.R

 

(BTU/W .h)

10.8

 

 

OPERATING

 

 

INDOOR

(C)

26.7(DB)*

19.4(WB)**

 

CONDITION

 

 

OUTDOOR

( C)

35(DB)*

23.9(WB)**

 

REFRIGERANT (R-22)CHARGE

 

490g(17.3oz)

 

505g(17.8oz)

 

 

 

 

 

 

 

 

EVAPORATOR

 

 

 

Ø9.52, 2ROW 13STACKS

 

CONDENSER

 

 

 

Ø7.0, 2ROW 17STACKS

 

FAN, INDOOR

 

 

 

TURBO FAN

 

 

 

 

 

 

 

 

FAN, OUTDOOR

 

 

 

PROPELLER TYPE FAN WITH SLINGER RING

 

 

 

 

 

 

 

 

FAN SPEEDS, FAN/COOLING

 

3/3

 

 

 

 

 

 

 

 

 

 

FAN MOTOR

 

 

 

6 POLES

 

 

 

 

 

 

 

 

OPERATION CONTROL

 

 

 

REMOTE CONTROLLER

 

 

 

 

 

 

 

 

ROOM TEMP. CONTROL

 

 

 

THERMISTOR

 

 

 

 

 

 

 

AIR DIRECTION CONTROL

 

HORIZONTAL LOUVER (UP & DOWN), AUTOSWING LOUVER (RIGHT&LEFT)

 

 

 

 

 

 

 

 

CONSTRUCTION

 

 

 

SLIDE IN-OUTCHASSIS

 

 

 

 

 

 

 

 

 

 

PROTECTOR

 

COMPRESSOR

 

OVERLOAD PROTECTOR

 

 

 

 

 

 

 

 

 

 

FAN MOTOR

 

INTERNAL THERMAL PROTECTOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER CORD

 

 

 

3 WIRE WITH GROUNDING

 

 

 

 

 

 

 

 

 

 

 

ATTACHMENT PLUG (CORD-CONNECTEDTYPE)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DRAIN SYSTEM

 

 

 

DRAIN PIPE OR SPLASHED BY FAN SLINGER

 

 

 

 

 

 

 

 

OUTSIDE DIMENSION

 

(inch)

 

235/8x1431/32x225/16

(W x H x D)

 

 

 

 

 

 

 

 

(mm)

 

380 x 600 x 555

* DB:Dry Bulb **WB:Wet Bulb

Service Manual 7

Operation

Operation

DESIGNED FOR COOLING ONLY

POWERFUL AND INCREDIBLE COOLING

TOP-DOWNCHASSIS FOR THE SIMPLE INSTALLATION AND SERVICE

BUILT-INADJUSTABLE THERMOSTAT

WASHABLE ONE-TOUCHFILTER

COMPACT SIZE

LocationandFunction of Controls

Service Manual 8

3

5

7

Mode

Timer

0F

 

 

0n/0ff

 

 

Fan Only Cool

 

hr

 

 

Dry

Money Saver®

 

 

 

 

 

Fan

 

Auto

Power

 

Speed

 

Swing

 

 

Temp

 

 

5

4

2

6

1

6

 

Air

Purifier Power

Temp

Fan Speed

Timer

Mode

Auto

A

Swing

Swing

 

1

2

4

3

6. AUTO SWING

This button can automatically control the air flow direction(left+right).

7

9 Room Air Conditioner

Disassembly

Disassembly

— Before the following disassembly, POWER SWITCH set to OFF and disconnect the power cord.

MechanicalParts

1.FRONT GRILLE

1.Open the lnlet grille upward or downward.

2. Remove the screw which fastens the front grille.

3. Pull the front grille from the right side.

4. Remove the front grille.

5. Re-installthe component by referring to the removal procedure, above.(See Figure 17)

Figure 17

2. CABINET

1.After disassembling the FRONT GRILLE, remove the 2 screws which fasten the cabinet at both

sides.

2. Remove the 2 screws which fasten the cabinet at back.

3. Pull the base pan forward. (See Figure 18)

4. Remove the cabinet.

5. Re-installthe component by referring to the removal procedure, above.

Figure 18

3.CONTROL BOX

1.Disconnect the unit from the power source.

2. Remove the front grille.

3. Remove the cabinet.

4. Remove the screw which fastens the control box cover.

5. Remove the housing which connects motor wire in the control box.

6. Remove the 3 leads from the compressor. 7.Discharge the capacitor by placing a 20,000 ohmresistor across the capacitor terminals.

8. Remove the 2 screws which fasten the control box.(See Figure 19)

9. Pull the control box forward completely.

10. Re-installthe components by referring to the removal procedure, above. (See Figure 19)

Figure 19

Service Manual 10

Disassembly

Air HandlingParts

1. AIR GUIDE AND BLOWER

1.

Remove the front grille.

 

2.

Remove the cabinet.

 

3.

Remove the control box.

 

4.

Remove the 3 screws which fasten the brace.

 

5.

Remove the brace.

 

6.

Remove the 2 screws which fasten the evaporator.

 

7.

Move the evaporator forward and pulling it upward

 

 

slightly. (See Figure 20)

 

8.

Move the evaporator to the left carefully.

Figure 20

 

 

9.Pull out the hook of orifice by pushing the tabs and remove it. (See Figure 21)

10. Remove the clamp with a hand plier which secures the blower.

11. Remove the blower.

12. Remove the 4 screws which fasten the air guide from the barrier.

13. Move the air guide backward, pulling out from the base pan.

14. Re-installthe components by referring to the removal procedure, above.

Figure 21

2. FAN AND SHROUD

1. Remove the cabinet.

2. Remove the brace.

3. Remove the 3 screws which fasten the condenser.

4. Move the condenser to the left carefully.

5. Remove the clamp which secures the fan.

6. Remove the fan and then pull out the shroud. (See Figure 22)

7. Re-installby referring to the removal procedure.

Figure 22

11 Room Air Conditioner

—7—

Disassembly

3. MOTOR

1.

Remove the cabinet.

 

2.

Remove the evaporator.

 

3.

Remove the orifice.

 

4.

Remove the blower.

 

5.

Remove the fan.

 

6.

Remove the control box cover and housing of the

 

 

motor in the control box.

 

7.

Remove the 2 screws which fasten the motor from

 

 

the mount motor. (See Figure 23)

 

8.

Remove the motor.

 

9.

Re-installthe components by referring to the

Figure 23

 

removal procedure, above.(See Figure 23)

Electrical Parts

1. OVERLOAD PROTECTOR

1. Remove the cabinet.

2. Remove the nut which fastens the terminal cover.

3. Remove the terminal cover. (See Figure 24)

4. Remove all the leads from the overload protector.

5. Remove the overload protector.

6. Re-installthe component by referring to the removal procedure, above.

Figure 24

2.COMPRESSOR

1.Remove the cabinet.

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.

 

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 25)

Figure 25

7.Re-installthe components by referring to the removal procedure, above.

Service Manual 12

Disassembly

MODEL : TOUCH & REMOTE CONTROL TYPE MODEL

1.Remove the control box.

2.

Remove the screw which fasten control panel from

 

 

control box.

 

3.

Remove the screw which located in the front.

 

4.

Open the bottom side of control box.

 

5.

Remove the screw and the clamp which fastens

 

 

the capacitor.

 

6.

Disconnect all the leads of capacitor terminals.

 

7.

Re-installthe components by referring to the

Figure 26

 

removal procedure, above. (See Figure 26)

7.POWER CORD

1.Remove the control box.

2.Open the control box.

3.Disconnect the grounding screw from the control box.

4.Disconnect the 2 receptacles.

5.Remove a screw which fastens the clip cord.

(See Figure 27)

6. Remove the power cord.

 

7. Re-installthe component by referring to the above

 

removal procedure, above.

 

(Use only one ground-markedhole for ground

 

connection.)

 

8. If the supply cord of this appliance is damaged, it

Figure 27

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.)

 

Refrigerating Cycle

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 WATCOA-1)before venting the FreonTM. Leave the valve in place after servicing the system.

1.CONDENSER

1.Remove the cabinet.

2.Remove the 3 screws which fasten the

brace.

3. Remove the 3 screws which fasten the condenser and shroud.

4. After discharging the refrigerant completely, unbraze the interconnecting tube at the condenser connections.

5. Remove the condenser carefully.

6. Re-installthe component by referring to notes. (See Figure 28)

Figure 28

Service Manual 13

Disassembly

2. EVAPORATOR

1.Remove the cabinet.

2.Remove the 2 screws which fasten the evaporator.

3.Move the evaporator sideways carefully.

4.After discharging the refrigerant completely, unbraze the interconnecting tube at the evaporator connections.

5.Remove the evaporator carefully.

6.Re-installthe component by referring to notes. (See Figure 29)

3.CAPILLARY TUBE

1.Remove the cabinet.

2.After discharging the refrigerant completely, unbraze the interconnecting tube at the capillary tube.

3.Remove the capillary tube.

4.Re-installthe component by referring to notes.

NOTICE

Replacement of the refrigeration cycle.

1.When replacing the refrigeration cycle, be sure to 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.

2.After discharging the unit completely, remove the desired component, and unbraze the pinch-offtubes.

3.Solder service valves into the pinch-offtube ports, leaving the valves open.

4.Solder the pinch-offtubes with Service valves.

5.Evacuate as follows.

1)Connect the vacuum pump, as illustrated figure 30A.

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.

CAUTION: If high vacuum equipment is used, just crack valves A and B 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 vaccum 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

Figure 29

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 37B. Open valve C.

Discharge the line at the manifold connection.

5)The system is now ready for final charging.

6.Recharge as follows :

1)Refrigeration cycle systems are charged from the High-side.If the total charge cannot be put in theHigh-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 30B.

With valve C open, discharge the hose at the manifold connection.

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-sidewill not take it. Close valve A.

5)With the unit running, open valve B and add the balance of the charge.

a.Do not add the liquid refrigerant to the Low-side.

b.Watch the Low-sidegauge; 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.

6)When satisfied the unit is operating correctly, use the pinch-offtool with the unit still running and clamp on to thepinch-offtube. Using a tube cutter, cut thepinch-offtube about 2 inches from thepinch-offtool. Usesil-fosbraze and brazepinch-offtube closed. Turn off the unit, allow it to set for a while, and then test the leakage of thepinch-offconnection.

14 Room Air Conditioner

Disassembly

Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment.Pin-offtool capable of making avapor-proofseal, Leak detector, Tubing cutter, Hand Tools to remove components, Service valve.

 

CONDENSER

COMPOUND GAUGE

 

 

 

 

 

 

 

 

 

(HIGH PRESSURE SIDE)

 

MANIFOLD

 

 

 

 

 

 

 

 

 

 

 

GAUGE

A

 

 

 

 

 

B

 

 

CAPILLARY TUBE

 

 

 

 

 

 

 

 

 

SEE INSETS

 

 

 

 

 

 

BELOW

 

 

 

 

 

EVAPORATOR

 

 

 

 

 

(LOW PRESSURE SIDE)

 

 

 

COMPRESSOR

 

 

 

 

 

 

 

 

LOW

HI

 

 

 

A

B

 

A

 

 

B

 

 

 

 

 

 

 

 

 

 

 

EXTERNAL

 

 

 

 

 

 

VACUUM PUMP

 

 

CHARGING

 

 

 

 

 

 

 

 

 

 

 

 

CYLINDER

 

 

 

 

 

 

C

 

 

 

Figure 30A-PullingVacuum

 

Figure 30B-Charging

 

 

 

 

 

Service Manual

15

Schematic Diagram

Schematic Diagram

Circuit Diagram

MODEL : TOUCH & REMOTE CONTROL TYPE MODEL

 

1

 

6

2

 

 

4

7

 

3

5

8

 

LOCATION

DESCRIPTION

Q'TY

NO.

 

 

PER SET

 

 

 

1

POWER CORD ASSEMBLY

1

 

 

 

2

FAN MOTOR

1

 

 

 

3

COMPRESSOR

1

 

 

 

4

DISPLAY P.W.B ASSEMBLY

1

 

 

 

5

MAIN P.W.B ASSEMBLY

1

6

THERMISTOR

1

7

CAPACITOR

1

8

OWERLOAD PROTECTOR

1

 

 

 

16 Room Air Conditioner

Schematic Diagram

ElectronicControl Device

17 Room Air Conditioner

Schematic Diagram

Components Location(For Main P.W.B ASM)

Service Manual 18

Troubleshooting Guide

Troubleshooting Guide

Piping System

CONDENSER COIL

 

FAN

CAPILLARY TUBE

 

MOTOR

 

 

COMPRESSOR

 

BLOWER

 

EVAPORATOR COIL

Figure 38 is a brief description of the important components and their function in what is called the refrigeration system. This will help you to understand the refrigeration cycle and the flow of the refrigerant in the cooling cycle.

 

 

 

ROOM AIR CONITIONER

 

 

 

 

CYCLE OF REFRIGERATION

 

 

EVAPORATOR COILS

 

 

 

CONDENSER COILS

 

 

 

SUCTION LINE

VAPOR INLET

 

COMPLETE LIQUID

 

HOT

 

COOL LOW PRESSURE VAPOR

 

BOIL OFF POINT

 

DISCHARGED

 

 

 

 

COOLED

 

 

 

AIR

AIR

ROOM AIR HEAT LOAD

 

 

 

 

 

 

 

 

 

OUTSIDE COOLING

 

 

 

 

 

AIR FOR REFRIGERANT

 

 

 

MOTOR

PASS THROUGH

 

 

 

 

 

 

 

 

 

COMPRESSOR

 

 

 

 

 

OIL

 

 

 

LIQUID

 

 

 

LIQUID OUTLET

 

PRESSURE

 

 

 

 

DROP

(LIQUID REFRIGERANT)

 

 

 

 

 

HIGH PRESSURE VAPOR

 

 

 

 

 

 

CAPILLARY TUBE

 

LIQUID REFRIGERANT

 

 

 

Figure 34

 

LOW PRESSURE VAPOR

 

 

 

 

 

19 Room Air Conditioner

Troubleshooting Guide

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.

Dirty indoor coil (heat exchanger)

Malfunction of fan.

Clogging of air filter.

Obstruction at air outlet.

Remove obstruction.

Check clogging in refrigeration circuit.

Repair clogging in refrigeration circuit.

Check outdoor coil (heat exchanger) and fan operation.

Check gas leakage.

Repair gas leak.

Replacement of unit if the unit is beyond repair.

Satisfactory operation with temperature difference of inlet & outlet air; 44~50°F (7~10°C)

Check heat load increase.

Clean condenser.

Not on separate circuit

Check inside gas pressure.

Adjust refrigerant charge.

Malfunction of compressor.

Replacement of compressor.

Service Manual 20

Troubleshooting Guide

Fails to Start

Check of power source.

Check of control panel setting.

Check of circuit breaker and fuse.

Check control panel.

Compressor fails only to start.

Drop of power voltage.

Defect of compressor capacitor.

Capacitor check.

Replacement.

Improper thermistor setting

Loose terminal connection

Improper wiring

Fan only fails to start.

Improper wiring.

Defect of fan motor capacitor.

Irregular motor resistance (Ω ) Irregular motor insulation (Ω )

Replacement of fan motor.

Irregular motor resistance (Ω )

Irregular motor insulation (Ω )

Replacement of compressor (Motor damaged).

Regular but fails to start.

Replacement of compressor. (Locking of piston, metal.)

21 Room Air Conditioner

Troubleshooting Guide

MODEL : BG8000ER, WG8000RY4, WG1000RY4

ELECTRIC PARTS TROUBLESHOOTING GUIDE:

Possible Trouble 1

Is the Trans input power AC 115V?

YES

Is the Trans output power about AC 14V?

YES

Is output Voltage of IC01D DC 12V?

YES

Is output Voltage of IC02D DC 5V?

YES

• The unit does not operate.

NO

 

• Check the Fuse.

 

 

 

 

 

 

• Check the wiring diagram.

 

 

 

 

 

 

 

 

 

 

 

NO

Is shorted the Trans. output?

NO

 

• Check the Main

 

 

 

 

 

 

 

 

P.W.B pattern.

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Exchange the Trans.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

Exchange D02D~D05D.

 

 

 

 

 

 

 

 

• Exchange IC01D.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

• Exchange IC02D.

 

 

 

Is the reset circuit all right?

NO

 

• Exchange IC01A.

 

 

 

 

(The No.14 of Micom

 

 

 

 

 

 

 

 

 

 

 

 

 

is 5V.)

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the

 

 

 

 

 

 

 

NO

 

• Connect connector

 

 

 

connection between

 

 

 

 

Main and Display

 

 

 

exactly.

 

 

 

all right?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the voltage No.18 of Micom

NO

 

• Check the P.W.B

 

 

 

 

pattern.

 

 

 

 

 

 

 

DC 5V?

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Exchange Main P.W.B Ass'y.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Service Manual 22

Troubleshooting Guide

 

 

Possible Trouble 2

 

 

 

• The compressor does not operate.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is Temp.

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Set the Temp. setting to lower Temp.

 

 

 

 

 

 

 

setting set lower than Room

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Temp.-0.5° C?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the voltage No.10

NO

 

 

Is the voltage N0.7 of

 

NO

Is the Unit for 3 minutes

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

of IC01M 0V?

 

 

 

 

 

IC01M DC 5V?

 

 

 

 

delay?

 

 

 

 

 

 

 

YES

 

 

 

 

 

 

YES

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Check the RY-COMP.

 

 

 

 

 

 

 

• Exchange IC01M.

 

 

 

 

• Wait 3 Minutes

 

 

 

 

 

 

• Check the wiring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Diagram.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Exchange MAIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

P.W.B Ass'y.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Possible Trouble 3

• The compressor always operate.

 

 

Is the wire connection of RY-COMPall right?

YES

• Check the RY-COMP.

Possible Trouble 4

NO

• Fan does not operate.

Is the voltage NO.1 or 4

NO

of IC01M DC 5V?

 

 

YES

 

 

 

Is the voltage NO.13 or 16

NO

of IC01M 0V?

 

YES

Check the RY-HiorRY-Lo.

Check the wiring diagram.

• Connect LEAD Wire to RY-COMPagain.

• Exchange IC01M.

• Exchange IC01M.

23 Room Air Conditioner

Troubleshooting Guide

Possible Trouble 5

Is the voltage of Battery about over 2.3V?

YES

• Romote controller does not operate.

NO

• Exchange the battery.

 

Is the voltage No.16

of CN-DISP1on Main P.W.B Ass'y DC 5V?

YES

Is the connection of

CN-DISP1all right?

YES

• Exchange Receiver Ass'y.

Possible Trouble 6

NO

• Check the P.W.B pattern.

 

NO

 

• Connect connector to

 

 

 

 

 

 

CN-DISP1exactly.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• It displays abnormally on Display P.W.B Ass'y.

Is the IC01G all right?

YES

NO

Is the connection of

CN-DISP1all right?

YES

Does the Q01G,

Q02G, Q03G Q04G operate normally on main P.W.B Ass'y?

YES

Exchange the display P.W.B Ass'y.

NO

NO

NO

• Exchange IC01G.

• Connect connector toCN-DISP1exactly.

• Exchange Q01G,

Q02G, Q03G, Q04G

Service Manual 24

Troubleshooting Guide

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

 

Connect wire. Refer to wiring diagram for

 

 

connection loose

 

terminal identification. Repair or replace loose

 

 

 

 

 

terminal.

 

 

 

 

 

 

 

 

Capacitor (Discharge

 

Test capacitor.

 

 

capacitor before testing.)

 

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. Re-alignassembly.

 

 

 

 

 

Units using slinger ring condenser fans must

 

 

 

 

 

have 0.22~0.25 inch clearance to the base.

 

 

 

 

 

If necessary, 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.

 

 

 

 

 

 

Fan motor runs.

 

Revolves on overload

 

Check voltage. See limits on this page.

 

 

 

 

 

If not within limits, call an electrician.

 

 

 

 

 

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.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

25 Room Air Conditioner

 

 

 

Troubleshooting Guide

 

 

 

 

 

 

 

 

COMPLAINT

CAUSE

REMEDY

 

 

 

 

Fan motor noise.

Fan

If cracked, out of balance, or partially missing,

 

 

 

replace it.

 

 

 

 

 

 

Blower

If cracked, out of balance, or partially missing,

 

 

 

replace it.

 

 

 

 

 

 

Loose set screw

Tighten it.

 

 

 

 

 

 

Worn bearings

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.

 

 

 

Compressor will not run,

Voltage

Check voltage. See the limits on the preceding

fan motor runs.

 

page. If not within limits, call an electrician.

 

 

 

 

 

 

Wiring

Check the wire connections; if loose, repair or

 

 

 

replace the terminal. If the wires are discon-

 

 

 

nected, refer to wiring diagram for identification,

 

 

 

and replace the wires. Check the wire connections;

 

 

 

If not according to the wiring diagram, correct

 

 

 

the connections.

 

 

 

 

 

 

Thermistor

Check the TEMP control. If not at the lowest

 

 

 

number, set TEMP control to this setting and

 

 

 

restart the unit.

 

 

 

 

 

 

 

Check the continuity of the thermistor. Replace

 

 

 

the thermistor if the circuit is open.

 

 

 

 

 

 

Rotary

Check for continuity, refer to the wiring diagram

 

 

 

for terminal identification. Replace the switch if

 

 

 

the circuit is open.

 

 

 

 

 

 

Thermostat

Check the position of knob. If not at the coldest

 

 

 

setting, advance the knob to this setting and

 

 

 

restart the unit.

 

 

 

 

 

 

 

Check the continuity of the thermostat. Replace

 

 

 

the thermostat if the circuit is open.

 

 

 

 

 

 

Capacitor (discharge

Check the capacitor.

 

 

capacitor before

Replace if not within ±10% of manufacturer’s

 

 

servicing.)

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, and retest.)

 

 

 

 

 

 

 

 

Service Manual 26

Troubleshooting Guide

COMPLAINT

CAUSE

REMEDY

 

 

 

Compressor cycles on

Voltage

Check the voltage. See the limits on the

overload.

 

preceding page. If voltage is not within these 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.)

 

 

 

Compressor cycles on

Fan motor

If not running, determine the cause. Replace if

overload.

 

required.

 

 

 

 

Condenser air flow

Remove the cabinet, inspect the interior surface

 

restriction

of the condenser. If restricted, clean carefully

 

 

with a vacuum cleaner (do not damage fins) or

 

 

brush. Clean the interior base before

 

 

re-assembling.

 

 

 

 

Condenser fins

If the condenser fins are closed over a large

 

(damaged)

area on the coil surface, head pressures will

 

 

increase, causing the compressor to cycle.

 

 

Straighten the fins or replace the coil.

 

 

 

 

Capacitor

Test the capacitor.

 

 

 

 

Wiring

Check the terminals. If loose, repair or replace.

 

 

 

 

Refrigeration system

Check the system for a restriction.

 

 

 

Insufficient cooling

Air filter

If restricted, clean or replace.

 

 

 

 

Unit undersized

Determine if the unit is properly sized for the

 

 

area to be cooled.

 

 

 

Excessive noise

Blower or fan

Check the set screw, or clamp. If loose or miss-

 

 

ing, correct. If the blower or fan is hitting scroll

 

 

or barrier, rearrange the air handling parts.

 

 

 

 

Copper tubing

Remove the cabinet and carefully rearrange the

 

 

tubing not to contact the cabinet,

 

 

compressor, shroud, and barrier.

 

 

 

27 Room Air Conditioner

Exploded View

Exploded Vie w

130910

 

554030

749740

 

 

731273

148000

359011

346811

352380

 

 

W48602

349600

149980

359012

267110

354210 W48602

349001

349480

567502

135303 152302

130410

 

554160

 

 

 

 

550140

135312

 

 

147581

 

W5210E-2

249950

 

W5210E-1

 

 

567480

W0CZZ

552102

 

552113

268711-1

 

238310

 

 

 

 

352113

146812

 

 

264100

 

 

237200 268711-2

135500

35211A

Service Manual 28

ReplacementParts list

LocNo

CP10E10

CP12E10

DESCRIPTION

REMARK

130410

67302929

67302929

Base Assy Single

R

349001

67303508

67303508

Damper Assembly

R

130910

67303715

67303715

Cabinet Assy Single

R

135312

67306018

67306018

Grille Assy Front

R

135303

67306111

67306111

Grille Assy Inlet

R

135500

67304701

67304701

Cover

R

147581

67306209

67306209

Louver,Horizontal

R

147582

67306265

67306265

Louver,Vertical

R

149980

67303103

67303103

Shroud

R

152302

67304308

67304308

Filter (Mech)

R

238310

67500143

67500143

Escutcheon

R

567480

67307806

67307806

Thermistor

R

264100

67300022

67300028

Power Cord Assy

R

267110

67307704

67307704

Remote Controller

R

249950

67305515

67305516

Case Assembly,Control

R

237200

67305514

67305514

Panel,Control

R

268711-1

67307623

67307623

PWB(PCB) Assy Display

R

268711-2

67307622

67307622

PWB(PCB) Assy Main

R

146812

67300902

67300902

Swing Louver Motor

R

349600

67303607

67303607

Bracket,Motor

R

346811

67303038

67303039

Motor Assy Single

R

349480

67303413

67303413

Orifice

R

352380

67302737

67302737

Duct Assembly

R

552102

67302129

67302130

Tube Assy Capillary

R

550140

67301901

67301901

Isolator Comp

R

359011

67302614

67302614

Fan Assy Axial

R

359012

67302616

67302616

Fan Turbo

R

148000

67303910

67303910

Supporter

R

567502

67301409

67301416

O.L.P. Overload Protect

R

W0CZZ

67300709

67300716

Capacitor

R

731273

67306313

67306313

installation Kit w/Curtain

R

W48602

67302500

67302500

Clamp Spring

R

749740

67304006

67304006

Upper Guide Cabinet

R

29 Room Air Conditioner

Use Factory Certified Parts...

FRIEDRICH AIR CONDITIONING CO.

Visit our web site at www.friedrich.com

Post Office Box 1540 • 4200 N. Pan Am Expressway • San Antonio, Texas 78295-1540

• (210) 357-4400• FAX (210)357-4490

CP10 CP12 SVC PARTS 2008(07/08)