Friedrich UE10C33 User Manual

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Uni- FitR

Thru-the-WallSeries

Service and Parts

Manual

Thru-the-WallSeries

230 Volts UE10C33 UE12C33

115 Volts UE08C13

Unifit Heat Cool Svc Parts 2010 (05/10)

Unifit. Cool (03/07)

Air Conditioner Service Manual

 

TABLE OF CONTENTS

 

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

 

 

3

Operating Instructions ..................................................................................................................................

7

Controls....................................................................................................................................................

7

Remote control.........................................................................................................................................

8

Disassembly instructions .............................................................................................................................

9

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

9

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

10

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

11

Refrigeration Cycle..................................................................................................................................

13

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

16

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

16

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

17

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

17

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

18

Room Air Conditioner Voltage Limits.......................................................................................................

21

Product specifications....................................................................................................................................

23~25

Exploded Vi ew .............................................................................................................................................

26

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

27~29

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 instruction 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

Installation

Don’t use a power cord, a plug or a loose socket which is damaged.

Otherwise, it may cause a fire or electrical shock.

Do not disassemble or modify products.

It may cause failure and electric shock.

Always plug into a grounded

Do not modify or extend the

outlet.

power cord length.

• Otherwise, it may cause a fire or

• It will cause electric shock or fire

electrical shock.

due to heat generation.

Be caution when unpacking and

Do not use the power cord near flam-

installing.

mable gas or combustibles such as

 

gasoline, benzene, thinner, etc.

• Sharp edges may cause injury.

• It may cause explosion or fire.

Gasolin

Service Manual 3

Safety Precautions

Operation

Do not place heavy object on the power cord and take care so that the cord should not be pressed.

There is danger of fire or electric shock.

Do not place the power cord near a heater.

It may cause fire and electric shock.

Do not share the outlet with other appliances.

It will cause electric shock or fire due to heat generation.

Do not allow water to run into electric parts.

It will cause failure of machine or electric shock.

Take the power plug out if necessary, holding the head of the plug and do not touch it with wet hands.

Otherwise, it may cause a fire or electrical shock.

Use a soft cloth to clean. Do not use wax, thinner, or a strong detergent.

The appearance of the air conditioner may deteriorate, change color, or develop surface flaws.

Unplug the unit if strange sounds, odors, or smoke come from it.

Otherwise it may cause fire and electric shock accident.

Ventilate the room well when using this appliance together with a stove, etc.

• An oxygen shortage may occur.

Do not open the suction inlet grill of the product during operation.

Otherwise, it may electrical shock and failure.

Turn off the power and breaker firstly when cleansing the unit.

Since the fan rotates at high speed during operation, it may cause injury.

Wax

Thinner

 

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

Turn off the main power switch when not using it for a long time.

Prevent accidental startup and the possibility of injury.

4 Room Air Conditioner

Safety Precautions

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

It will cause electric shock or fire due to heat generation.

Hold the plug by the head when taking it out.

It may cause electric shock and damage.

Do not damage or use an unspecified power cord.

• It will cause electric shock or fire.

When gas leaks, open the window for ventilation before operating the unit.

Otherwise, it may cause explosion, and a fire.

Do not operate with wet hands or in damp environment.

• It will cause electric shock.

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

They are sharp and may cause injury.

CAUTION

Installation

Install the product so that the noise or hot wind from the outdoor unit may not cause any damage to the neighbors.

• Otherwise, it may cause dispute with the neighbors.

Keep level parallel in installing the product.

• Otherwise, it may cause vibration or water leakage.

Service Manual 5

Safety Precautions

Operation

Do not put a pet or house plant where it will be exposed to direct air flow.

• It may cause injury.

Do not step on the indoor/outdoor unit and do not put anything on it.

It may cause an injury through dropping of the unit or falling down.

Be cautious not to touch the sharp edges when installing.

• It may cause injury.

Do not block the inlet or outlet of air flow.

• It may cause product failure.

Always insert the filter securely. Clean it every two weeks.

Operation without filters will cause failure.

Avoid excessive cooling and perform ventilation sometimes.

Otherwise, it may do harm to your health.

Use a soft cloth to clean. Do not use wax, thinner, or a strong detergent.

The appearance of the air conditioner may deteriorate, change color, or develop surface flaws.

Do not drink water drained from air conditioner.

It contains containments and will make you sick.

Do not insert the hands or bars through the air inlet or outlet during operation.

Otherwise, it may cause personal injury.

6 Room Air Conditioner

Operating Instructions

Controls

FAN SPEED

Every time you push this button,it advances the setting as follows:{High[F2]Low[F1]}High[F2]

TIMER

SHUT-OFFTIME

You will usually useshut-offtime while you sleep.

REMOTE CONTROL SIGNAL

RECEIVER

TEMPERATURE SETTING

Use this button to automatically control the temperature of the room

The tmeperature can be set within a range of

60 F to 86 F by increments of 1 F.

The setting appears in the display.

POWER

To turn the air conditioner ON,push this button. To turn the air conditioner OFF,push the button again.

This button takes priority over any other button.

If unit is running,use Timer to set number of hours untilshut-off.

For your sleeping comfort once Timer is set the Temperature

setting will raise 2 F after 30 min and once again after another

30 min.

Push Timer button to advance setting from 1Hour→ 2Hour →...

→12Hours maximum.

START TIME

If unit is off,use Timer to set number of hours before nuit starts.

Push Timer button to advance setting from 1Hour→ 2Hour →...

→12Hours maximum.

MODE

Push this button to shift mode of operation from COOL → MONEY SAVER→ FAN ONLY→HEAT

COOL:

Fan runs continually for normal cooling operation.

MONEY SAVER:

The fan stops when the compressor stops cooling.Approximately every 3 minutes the fan will turn on and the nuit will check the room air temperature to determine if cooling is needed.

FAN ONLY:

Fan-onlyoperation.

HEAT:

Fan runs continually for normal heating operation.

AUTO RESTART When power is restored after an electrical power failure,the unit will begin to run at its last setting.

7 Room Air Conditioner

REMOTE CONTROL

POWER

To turn the air conditioner ON,push this button.

To turn the air conditioner OFF,push the button again.

This button takes priority over any other button.

TEMPERATURE SETTING

Use this button to automatically control the temperature of the room.

The tmeperature can be set within a range of 60 F to 86 F by

increments of 1 F.

The setting appears in the display.

FAN SPEED

Every time you push this button,it advances the setting as follows: {High[F2]Low[F1]}High[F2]

TIMER

SHUT-OFFTIME

You will usually useshut-offtime while you sleep.

If unit is running,use Timer to set number of hours untilshut-off.

For your sleeping comfort once Timer is set the Temperature setting will

raise 2 F after 30 min and once again after another 30 min.

Push Timer button to advance setting from 1Hour→ 2Hour →...

→12Hours maximum.

START TIME

If unit is off,use Timer to set number of hours before nuit starts.

Push Timer button to advance setting from 1Hour→ 2Hour →...

→12Hours maximum.

MODE

Push this button to shift mode of operation from COOL → MONEY SAVER→ FAN ONLY→HEAT

COOL:

Fan runs continually for normal cooling operation.

MONEY SAVER:

The fan stops when the compressor stops cooling.Approximately every 3 minutes the fan will turn on and the nuit will check the room air temperature to determine if cooling is needed.

FAN ONLY:

Fan-onlyoperation.

HEAT:

Fan runs continually for normal heating operation.

CAUTION

When the air conditioner has been performed its cooling or feating operation and is turned off or set to the fan position wait at 3 minutes before resetting to the cooling operation again.

A slight heat odor may come from the nuit when first switching to HEAT after the cooling season is over.This odor,caused by fine duct particles on the heater,will disappear quickly.This is harmless.

Service Manual 8

Disassembly Instructions

Disassembly Instructions

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

MechanicalParts

1.FRONT GRILLE

1.Open the inlet 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. (See Fig. 1)

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

FIG. 1

2.CABINET

1.After disassembling the FRONT GRILLE, remove the 9 screws which fasten the cabinet at the both sides and the top. (See Fig. 2)

Keep these for later use.

3.CONTROL BOX

1.Remove the front grille. (Refer to section 1)

2.Remove the screw which fasten the control box. (See Fig. 3)

3.Pull the control box from the barrier.(See Fig.3)

4.Discharge the capacitor by placing a 20,000 ohm resistor across the capacitor terminals.

5.Disconnect two wire housings in the control box.

6.Pull the control box forward completely.

7.Re-installthe components by referring to the removal procedure. (See Fig. 3)

(Refer to the circuit diagram found on pages 24 in this manual and on the control box.)

FIG. 2

'F

OWER

FIG. 3

Service Manual 9

Disassembly Instructions

Air HandlingParts

4.ORIFICE, HEATER ASSY AND TURBO FAN

1.Remove the front grille. (Refer to section 1)

2.Remove the cabinet. (Refer to section 2)

3.Remove the 2 screws which fasten the evaporator at the left side and the right side.

(See Fig. 4)

4.Move the evaporator sideward carefully.

5.Remove the 2 terminals carefully

(See Fig. 28, at Electric Heater Model only)

6.Remove the 4 screws which fasten the orifice. (See Fig. 5)

7.Remove the orifice. (See Fig. 5)

8.Remove the clamp which secures the turbo fan with plier. (See Fig. 6)

9.Remove the turbo fan with plier or your hand without touching blades. (See Fig. 7)

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

5.FAN

1.Remove the cabinet. (Refer to section 2)

2.Remove the brace and shroud cover. (Refer to section 4)

3.Remove the 6 screws which fasten the condenser.

4.Move the condenser sideways carefully.

5.Remove the clamp which secures the fan.

6.Remove the fan. (See Fig. 8)

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

EneCool

 

Savrgery

 

Fan

 

Timer

'F

MODE

TEMP

TIMER

FAN

 

SPEED

 

POWER

FIG. 4

FIG. 5

FIG. 6

FIG. 7

FIG. 8

10 Room Air Conditioner

Disassembly Instructions

6. SHROUD

1. Remove the fan. (Refer to section 5)

2. Remove the screw which fasten the shroud.

3. Remove the shroud. (See Fig. 9)

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

FIG. 9

Electrical Parts

7. MOTOR

1.Remove the cabinet. (Refer to section 2)

2.Remove the clamp cord and disconnect a wire housing in control box. (Refer to section 3)

3.Remove the turbo fan. (Refer to section 5)

4.Remove the fan. (Refer to section 5)

5.Remove the 4 or 2 screws which fasten the motor. (See Fig. 10)

6.Remove the motor.

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

8.COMPRESSOR

1.Remove the cabinet. (Refer to section 2)

2.Discharge the refrigerant system using 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.Disconnect the 3 leads from the compressor.

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. (See Fig. 11)

6.Remove the compressor.

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

9.CAPACITOR

1.Remove the control box. (Refer to section 3)

2.Remove a screw which fasten the display panel.

3.Remove 2 screws and unfold the control box. (See Fig. 12)

4.Remove the screw and the clamp which fastens the capacitor. (See Fig. 12)

5.Disconnect all the leads of capacitor terminals.

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

FIG. 10

FIG. 11

Cool

 

 

Energy

 

 

Saver

 

 

Fan

 

F1

 

 

F3F2 MLOWED

 

Timer

HIGH

MODE

'F

TIMER

 

 

FAN

 

 

 

 

SPEED

 

 

POWER

FIG. 12

Service Manual 11

Disassembly Instructions

10. POWER CORD

1.Remove the control box. (Refer to section 3)

2.Unfold the control box. (Refer to section 9)

3.Disconnect the grounding screw from the control box.

4.Disconnect 2 receptacles.

5.Remove a screw which fastens the clip cord.

6.Pull the power cord. (See Fig. 13)

7.Re-installthe component by referring to the

removal procedure, above.

(Use only one ground-markedholefor ground connection.)

8.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 fitted to the unit.)

Cool

 

 

Energy

 

 

Saver

 

 

Fan

 

F1

 

 

F3F2MLOWED

 

Timer

HIGH

MODE

'F

TIMER

 

 

FAN

 

 

 

 

SPEED

 

 

POWER

FIG. 13

11. THERMOSTAT

1.Remove the control box. (Refer to section 3)

2.Unfold the control box. (Refer to section 9)

3.Disconnect the theristor terminals from main P.W.B assembly.

4.Remove the thermostat. (See Fig. 14)

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

Cool

 

 

Energy

 

 

Saver

 

 

Fan

 

F1

 

 

F2LOW

 

 

F3 MED

 

Timer

HIGH

 

'F

 

 

FAN

 

 

SPEED

 

 

POWER

FIG. 14

12 Room Air Conditioner

Disassembly Instructions

RefrigeratingCycle

CAUTION

Discharge the refrigerant system using 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.

12. CONDENSER

 

1.

Remove the cabinet. (Refer to section 2)

 

2.

Remove the brace and the shroud cover.

 

 

(Refer to section 4)

 

3.

Remove the 5 screws which fasten the condenser.

 

4.

After discharging the refrigerant completely,

 

 

unbraze the interconnecting tube at the condenser

FIG. 15

 

connections.

 

5.Remove the condenser.

6.Re-installthe components by referring to notes.

(See Fig. 15)

13. EVAPORATOR

1.Remove the cabinet. (Refer to section 2)

2.Discharge the refrigerant completely.

3.Remove the 2 screws which fasten the evaporator at the left side and the right side.

4.Move the evaporator sideward carefully and then unbraze the interconnecting tube at the evaporator connectors.

5.Remove the evaporator.

6.Re-installthe components by referring to notes. (See Fig. 16)

Cool

 

 

Energy

 

 

Saver

 

 

Fan

 

 

MODE

Timer

'F

TIMER

TEMP

 

FAN

 

 

 

 

SPEED

 

 

POWER

FIG. 16

14. CAPILLARY TUBE

1.Remove the cabinet. (Refer to section 2)

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

3.Remove the capillary tube.

4.Re-installthe components by referring to notes.

Service Manual 13

Disassembly Instructions

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 unbrace 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 Fig. 17A.

2)Start the vacuum pump, slowly open manifold valves A and B with two full turns counterclockwise and leave the valves closed.

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 for 20 to 30 minutes, until 600 microns of vacuum 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 Fig. 17B. 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 Fig. 17B. 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 Lowside.

b.Watch the Low-sidegauge; allow pressure to rise to 39 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-fossolder and solderpinch-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 Instructions

Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment.Pinch-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

B

A

 

EXTERNAL

 

 

 

VACUUM PUMP

 

 

 

 

 

CHARGING

 

 

 

CYLINDER

 

 

 

C

 

FIG. 17A-PullingVacuum

FIG 17B-Charging

 

Service Manual 15

Schematic Diagram

Schematic Diagram

Wiring Diagram

ELECTRIC HEATING MODEL

16 Room Air Conditioner

Troubleshooting Guide

Troubleshooting Guide

Piping System

CONDENSER COILS

FAN

CAPILLARY TUBE

MOTOR

COMPRESSOR

TURBO FAN

EVAPORATOR COILS

: REFRIGERANT FLOW

Following is a brief description of the important components and their functions in the refrigeration system. Refer to Fig. 18 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle.

 

ROOM AIR CONDITIONER

 

 

CYCLE OF REFRIGERATION

 

EVAPORATOR COILS

 

 

CONDENSER COILS

 

SUCTION LIME

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 PEFRIGERANT

 

 

 

 

 

LOW PRESSURE VAPOR

 

FIG. 18

 

 

Service Manual 17

Troubleshooting Guide

Troubleshooting Guide

In general, possible trouble is classified in two causes.

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 is running but cooling is ineffective

Ineffective Cooling

Check of cold air circulation for smooth flow.

Dirty indoor coil (Heat exchanger)

Malfunction of fan

Clogged of air filter

Obstruction at air outlet

Stop of auto air-swing

Correct above trouble

Check clogging in refrigeration circuit.

Repair clogging in refrigeration circuit.

Check of outdoor coil (heat exchanger) & the 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 ; 44.6~50˚F

Check heat load increase.

Unexpected residue

Overloaded Circuit

Check of inside gas pressure.

Adjusting of refrigerant charge

Malfunction of compressor

Replacement of compressor

18 Room Air Conditioner

Troubleshooting Guide

Fails to Start

Check of power source.

 

 

 

 

Check of circuit breaker

 

 

 

and fuse.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check of control switch setting.

Gas leakage of feeler bulb of thermostat

Check of control switch.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Only compressor fails to

 

 

 

 

 

Only fan fails to start.

start.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Improper wiring.

Drop of power voltage.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Improper thermostat setting

 

 

 

 

 

 

 

 

 

Defect of fan motor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Defect of compressor

 

 

 

 

 

 

capacitor.

 

 

 

 

 

 

 

 

capacitor.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Loose terminal connection.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Irregular motor resistance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(

).

 

Check capacitor.

 

 

 

 

 

 

 

 

 

 

 

 

 

Irregular motor insulation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(

).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Improper wiring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replacement.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replacement of fan motor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Irregular motor resistance ()

Irregular motor insulation ()

Replacement of compressor (Motor damaged)

Regular but fails to start

Replacement of compressor (locking of rotor, metal)

Service Manual 19

Troubleshooting Guide

 

COMPLAINT

CAUSE

REMEDY

 

 

 

 

 

Fan motor will not run.

No power

Check voltage at outlet. Correct if none.

 

 

 

 

 

 

 

 

Wire disconnected or

Connect wire. Refer to wiring diagram for terminal

 

 

connection loose

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.

 

 

 

 

 

 

 

Fan blade hitting shroud or blower wheel hitting

 

 

Will not rotate

scroll. Realign assembly.

 

 

 

Units using slinger ring condenser fans must

 

 

 

have 1/4 to5/16 inch clearance to the base. If it is

 

 

 

hitting 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.

 

 

 

 

 

Fan motor runs

Revolves on overload.

Check voltage. See limits on this page. If not within

 

intermittently

 

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.

 

 

 

 

 

Fan motor noise.

Grommets

Check grommets; if worn or missing, replace them.

 

 

 

 

 

 

Fan

If cracked, out of balance, or partially missing,

 

 

 

replace it.

 

 

 

 

 

 

Turbo fan

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.

 

 

 

 

 

 

 

 

20 Room Air Conditioner

 

 

Troubleshooting Guide

 

 

 

 

 

COMPLAINT

CAUSE

REMEDY

 

 

 

 

 

Compressor will not run,

 

 

 

but fan motor runs.

Voltage

Check voltage. See the limits on the preceding.

 

 

 

 

 

page. If not within limits, call an electrician.

 

 

 

 

 

 

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.

 

 

 

 

 

 

Capacitor (Discharge

Check the capacitor.

 

 

capacitor before

Replace if not within ±10% of manufacturers

 

 

servicing.)

rating. Replace if shorted, open, or damaged.

 

 

 

 

 

 

Compressor

Check the compressor for open circuit or

 

 

ground. If open or grounded, replace the compres-

 

 

 

 

 

 

sor.

 

 

 

 

 

 

Overload

Check the compressor overload, if externally

 

 

mounted. Replace if open. (If the compressor

 

 

 

 

 

 

temperature is high, remove the overload, cool it,

 

 

 

and retest.)

 

 

 

 

 

ROOM AIR CONDITIONER VOLTAGE LIMITS

NAME PLATE RATING

MINIMUM

MAXIMUM

 

 

 

115V

103.5V

126.5V

 

 

 

208/230V

187V

253V

 

 

 

Service Manual 21

Troubleshooting Guide

COMPLAINT

CAUSE

REMEDY

 

 

 

 

Compressor cycles

Voltage

Check the voltage. See the limits on the preced-

on overload.

 

ing page. 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.

 

 

 

 

 

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

 

 

reassembling.

 

 

 

 

 

Condenser fins

If condenser fins are closed over a large area

 

(damaged)

on the coil surface, head pressures will increase,

 

 

causing the compressor to cycle. Straighten the

 

 

fins or replace the coil.

 

Capacitor

Test capacitor.

 

 

 

 

 

Wiring

Check the terminals. If loose, repair or replace.

 

Refrigerating system

Check the system for a restriction.

Insufficient cooling or heat-

Air filter

If restricted, clean of replace.

ing

Exhaust damper door

Close if open.

 

 

 

 

 

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 missing,

 

 

correct. If the blower or fan is hitting air guide,

 

 

rearrange the air handling parts.

 

Copper tubing

Remove the cabinet and carefully rearrange tubing

 

 

not to contact cabinet, compressor, shroud, and bar-

 

 

rier.

 

 

 

 

22 Room Air Conditioner

Product Specifications

ITEMS

MODELS

REMARK

UE08C13

 

 

 

 

 

POWER SUPPLY

1Ø,115V,60HZ

 

 

 

CAPACITY(Btu/h)

8,000

COOLING

 

 

INPUT(W)

830

 

 

 

RUNNING CURRENT(A)

7.5

 

 

 

 

E.E.R(Btu/W.h)

9.6

 

 

 

CAPACITY(Btu/h)

3,850

HEATING

 

 

INPUT(W)

1,230

 

 

 

RUNNING CURRENT(A)

10.7

 

COOLING

INDOOR(°F)

80 (DB)67 (WB)

OPERATING

 

 

OUTDOOR(°F)

95 (DB)

75 (WB)

TEMPERATURE

HEATING

INDOOR(°F)

70 (DB)

60 (WB)

 

 

 

 

OUTDOOR(°F)

47 (DB)

44 (WB)

REFRIGERANT(R410A)

CHARGE(g

320 (11.3OZ)

EVAPORATOR

 

 

2 ROW 12 STACKS

LOUVER-

CONDENSER

 

 

Ø5.0 3 ROW 18 STACKS,L-BENDEDTYPE

FIN TYPE

FAN,INDOOR

 

 

TURBO FAN

 

FAN,OUTDOOR

 

 

PROPELLER TYPE FAN WITH SLINGER-RING

 

FAN,SPEEDS (FAN/COOLING/HEATING)

2/2/2

 

FAN,MOTOR

 

 

6 POLES

 

OPERATION CONTROL

 

TOUCH PANEL

 

ROOM TEMP.CONTROL

 

THERMISTOR

 

AIR DIRECTTION CONTROL

 

VERTICAL LOUVER (RIGHT&LEFT)

 

 

HORIZONTAL LOUVER (UP&DOWN)

 

 

 

 

 

CONSTRUCTION

 

 

TOP - DOWN

 

 

 

 

 

ELECTRIC HEATER

 

3.5KW,230V

 

 

COMPRESSOR

EXTERNAL OVERLOAD PROTECTOR

 

PROTECTOR

FAN,MOTOR

INTERANL THERMAL PROTECTOR

 

 

ELECTRIC HEATER

FUSE LINK,BIMETAL THERMOSTAT

 

POWER CORD

 

 

1.92m 3WIRE WITH GROUDING)

 

 

 

ATTACHMENT PLUG(CORD-CONNECTEDTYPE)

 

 

 

 

 

 

 

 

 

 

DRAIN SYSTEM

 

 

SPLASHED BY FAN SLINGER

 

NET WEIGHT(lbs/kg)

 

80/36

 

DIMENSION

 

( inch)

24 21/32 x 14 13/32 x 19 21/32

 

(Wx Hx D)

 

( mm)

656 x 366 x 499

 

SLEEVE DIMESION

( inch)

25 7/8 x 15 17/32 x 16 23/32

OPTIONA PART

(Wx Hx D)

 

( mm)

656 x 394 x 425

 

 

SLEEVE DEPTH

 

( inch)

20

 

WITH FRONT GRILLE

( mm)

510

 

Service Manual 23

Product Specifications

ITEMS

MODELS

REMARK

UE10C33

 

 

 

 

 

POWER SUPPLY

1Ø,230/208V,60HZ

 

 

 

CAPACITY(Btu/h)

10 000/9 800

COOLING

 

 

INPUT(W)

1,080/1 040

 

 

 

RUNNING CURRENT(A)

4.7/5.2

 

 

 

E.E.R(Btu/W.h)

9.4/9.4

 

 

 

CAPACITY(Btu/h)

11 200/9 200

HEATING

 

 

INPUT(W)

3,500/2 900

 

 

 

RUNNING CURRENT(A)

15.3/14.0

 

COOLING

INDOOR(°F)

80 (DB)67 (WB)

 

95 (DB)

75 (WB)

OPERATING

 

 

OUTDOOR(°F)

TEMPERATURE

HEATING

INDOOR(°F)

70 (DB)

60 (WB)

 

 

 

 

OUTDOOR(°F)

47 (DB)

44 (WB)

REFRIGERANT(R410A)

CHARGE(g

440 (15.5OZ)

EVAPORATOR

 

 

3 ROW 12 STACKS

LOUVER-

CONDENSER

 

 

2 ROW 18 STACKS,L-BENDEDTYPE 1 ROW

FIN TYPE

FAN,INDOOR

 

 

TURBO FAN

 

FAN,OUTDOOR

 

 

PROPELLER TYPE FAN WITH SLINGER-RING

 

FAN,SPEEDS (FAN/COOLING/HEATING)

2/2/2

 

FAN,MOTOR

 

 

6 POLES

 

OPERATION CONTROL

 

TOUCH PANEL

 

ROOM TEMP.CONTROL

 

THERMISTOR

 

AIR DIRECTTION CONTROL

 

VERTICAL LOUVER (RIGHT&LEFT)

 

 

HORIZONTAL LOUVER (UP&DOWN)

 

 

 

 

 

CONSTRUCTION

 

 

TOP - DOWN

 

 

 

 

 

ELECTRIC HEATER

 

3.5KW,230V

 

 

COMPRESSOR

EXTERNAL OVERLOAD PROTECTOR

 

PROTECTOR

FAN,MOTOR

INTERANL THERMAL PROTECTOR

 

 

ELECTRIC HEATER

FUSE LINK,BIMETAL THERMOSTAT

 

POWER CORD

 

 

1.92m 3WIRE WITH GROUDING)

 

 

 

ATTACHMENT PLUG(CORD-CONNECTEDTYPE)

 

 

 

 

 

 

 

 

 

 

DRAIN SYSTEM

 

 

SPLASHED BY FAN SLINGER

 

NET WEIGHT(lbs/kg)

 

80/36

 

DIMENSION

 

( inch)

24 21/32 x 14 13/32 x 19 21/32

 

(Wx Hx D)

 

( mm)

656 x 366 x 499

 

SLEEVE DIMESION

( inch)

25 7/8 x 15 17/32 x 16 23/32

OPTIONA PART

(Wx Hx D)

 

( mm)

656 x 394 x 425

 

 

SLEEVE DEPTH

 

( inch)

20

 

WITH FRONT GRILLE

( mm)

510

 

24 Room Air Conditioner

Product Specifications

ITEMS

MODELS

REMARK

UE12C13

 

 

 

 

 

POWER SUPPLY

1Ø,230/208V,60HZ

 

 

 

CAPACITY(Btu/h)

11 500/11,200

COOLING

 

 

INPUT(W)

1,220/1 190

 

 

 

RUNNING CURRENT(A)

5.6/6.0

 

 

 

E.E.R(Btu/W.h)

9.4/9.4

 

 

 

CAPACITY(Btu/h)

11 200/9 200

HEATING

 

 

INPUT(W)

3,500/2 900

 

 

 

RUNNING CURRENT(A)

15.3/14.0

 

COOLING

INDOOR(°F)

80 (DB)67 (WB)

OPERATING

OUTDOOR(°F)

95 (DB)

75 (WB)

TEMPERATURE

HEATING

INDOOR(°F)

70 (DB)

60 (WB)

 

 

 

 

OUTDOOR(°F)

47 (DB)

44 (WB)

REFRIGERANT(R410A)

CHARGE(g

540 (19.0OZ)

EVAPORATOR

 

 

3 ROW 12 STACKS

LOUVER-

CONDENSER

 

 

2 ROW 18 STACKS,L-BENDEDTYPE 1 ROW

FIN TYPE

FAN,INDOOR

 

 

TURBO FAN

 

FAN,OUTDOOR

 

 

PROPELLER TYPE FAN WITH SLINGER-RING

 

FAN,SPEEDS (FAN/COOLING/HEATING)

2/2/2

 

FAN,MOTOR

 

 

6 POLES

 

OPERATION CONTROL

 

TOUCH PANEL

 

ROOM TEMP.CONTROL

 

THERMISTOR

 

AIR DIRECTTION CONTROL

 

VERTICAL LOUVER (RIGHT&LEFT)

 

 

HORIZONTAL LOUVER (UP&DOWN)

 

 

 

 

 

CONSTRUCTION

 

 

TOP - DOWN

 

 

 

 

 

ELECTRIC HEATER

 

3.5KW,230V

 

 

COMPRESSOR

EXTERNAL OVERLOAD PROTECTOR

 

PROTECTOR

FAN,MOTOR

INTERANL THERMAL PROTECTOR

 

 

ELECTRIC HEATER

FUSE LINK,BIMETAL THERMOSTAT

 

POWER CORD

 

 

1.92m 3WIRE WITH GROUDING)

 

 

 

ATTACHMENT PLUG(CORD-CONNECTEDTYPE)

 

 

 

 

 

 

 

 

 

 

DRAIN SYSTEM

 

 

SPLASHED BY FAN SLINGER

 

NET WEIGHT(lbs/kg)

 

80/36

 

DIMENSION

 

( inch)

24 21/32 x 14 13/32 x 19 21/32

 

(Wx Hx D)

 

( mm)

656 x 366 x 499

 

SLEEVE DIMESION

( inch)

25 7/8 x 15 17/32 x 16 23/32

OPTIONA PART

(Wx Hx D)

 

( mm)

656 x 394 x 425

 

 

SLEEVE DEPTH

 

( inch)

20

 

WITH FRONT GRILLE

( mm)

510

 

Service Manual 25

Exploded View

Exploded View

135312

C 147582-1

145200

147582-2

 

 

152302

 

132100

135313

 

 

731273

352380

D

 

 

349001

 

 

349480

 

 

148000

E

753000

149980

346811

359012

 

 

 

130410

 

 

 

 

 

 

 

 

349600

W48602

 

 

A

 

 

 

 

 

 

567480

249950

267110

 

 

268711-

 

 

249940

 

238310

 

 

 

 

 

 

268711-1

B

Cool

 

 

 

 

Ener

 

 

 

 

Savegry

 

 

 

 

Fan

 

 

 

567502

TIMER

F

 

MODE

Timer

 

 

 

 

 

 

 

 

 

SPAN

 

 

 

 

EED

 

 

 

 

PO

 

 

 

 

WER

 

 

 

 

237200

 

 

130900

435300 435301

559011

W48602

552206

264110

W0CZZ

550140

26 Room Air Conditioner

LocNo

Description

UE08C13

 

 

 

W0CZZ

CAPACITOR,FILM,BOX

67301909

 

 

 

130410

BASE ASSEMBLY,SINGLE

67302923

 

 

 

130900

CABINET

67303718

 

 

 

132100

FRAME

67303504

 

 

 

135303

GRILLE,INLET

67306113

 

 

 

135312

GRILLE ASSEMBLY,FRONT(SINGLE)

67306020

238310

ESCUTCHEON

67304802

 

 

 

W48602

CLAMP,SPRING

67302500

 

 

 

346811

MOTOR ASSEMBLY,SINGLE

67303019

 

 

 

147581

LOUVER,HORIZONTAL

67306203

 

 

 

147582-1

LOUVER,VERTICAL

67306252

 

 

 

147582-2

LOUVER,VERTICAL

67306253

 

 

 

349600

BRACKET,MOTOR

67303607

 

 

 

149980

SHROUD

67303111

 

 

 

550140

DAMPER,COMPRESSOR

67305000

 

 

 

152302

FILTER,AIR

67304304

 

 

 

352380

AIR GUIDE

67302735

 

 

 

359012

FAN,TURBO

67302608

 

 

 

559011

FAN ASSEMBLY,AXIAL

67303202

567480

THERMISTOR ASSEMBLY

67307808

 

 

 

264110

POWER CORD ASSEMBLY

67300031

 

 

 

267110

REMOTE CONTROLLER ASSEMBLY

67302239

 

 

 

567502

OverloadProtect

67301907

 

 

 

268711-2

PWB(PCB) ASSEMBLY,MAIN

67307644

 

 

 

268711-1

PWB(PCB) ASSEMBLY,DISPLAY

67307646

 

 

 

435300

PLASTIC REAR AIR DEFLECTOR

67307208

 

 

 

237200

PANEL,CONTROL

67305527

731273

INSTALL PART ASSEMBLY,SINGLE

67306307

 

 

 

249950

CASE ASSEMBLY,CONTROL

67305528

 

 

 

435301

GRILLE,REAR

67304801

 

 

 

349480

ORIFICE

67303406

 

 

 

753000

Heater,Electric

67310101

 

 

 

Service Manual 27

LocNo

Description

UE10C33

 

 

 

W0CZZ

CAPACITOR,FILM,BOX

67301910

 

 

 

130410

BASE ASSEMBLY,SINGLE

67302923

 

 

 

130900

CABINET

67303718

 

 

 

132100

FRAME

67303504

 

 

 

135303

GRILLE,INLET

67306104

 

 

 

135312

GRILLE ASSEMBLY,FRONT(SINGLE)

67306005

 

 

 

238310

ESCUTCHEON

67304802

 

 

 

W48602

CLAMP,SPRING

67302500

 

 

 

346811

MOTOR ASSEMBLY,SINGLE

67303008

 

 

 

147581

LOUVER,HORIZONTAL

67306203

 

 

 

147582-1

LOUVER,VERTICAL

67306252

 

 

 

147582-2

LOUVER,VERTICAL

67306253

 

 

 

349600

BRACKET,MOTOR

67303607

149980

SHROUD

67303111

 

 

 

550140

DAMPER,COMPRESSOR

67305000

 

 

 

152302

FILTER,AIR

67304304

 

 

 

352380

AIR GUIDE

67302735

 

 

 

359012

FAN,TURBO

67302608

 

 

 

559011

FAN ASSEMBLY,AXIAL

67303202

 

 

 

567480

THERMISTOR ASSEMBLY

67307808

 

 

 

264110

POWER CORD ASSEMBLY

67300029

 

 

 

267110

REMOTE CONTROLLER ASSEMBLY

67302239

 

 

 

567502

OverloadProtect

67301908

 

 

 

268711-2

PWB(PCB) ASSEMBLY,MAIN

67307645

 

 

 

268711-1

PWB(PCB) ASSEMBLY,DISPLAY

67307646

 

 

 

435300

PLASTIC REAR AIR DEFLECTOR

67307208

237200

PANEL,CONTROL

67305527

 

 

 

731273

INSTALL PART ASSEMBLY,SINGLE

67306307

 

 

 

249950

CASE ASSEMBLY,CONTROL

67305529

 

 

 

435301

GRILLE,REAR

67304801

 

 

 

349480

ORIFICE

67303406

 

 

 

753000

Heater,Electric

67310100

 

 

 

28 Room Air Conditioner

LocNo

Description

UE12C33

 

 

 

W0CZZ

CAPACITOR,FILM,BOX

67301911

 

 

 

130410

BASE ASSEMBLY,SINGLE

67302930

 

 

 

130900

CABINET

67303718

 

 

 

132100

FRAME

67303504

 

 

 

135303

GRILLE,INLET

67306104

 

 

 

135312

GRILLE ASSEMBLY,FRONT(SINGLE)

67306005

238310

ESCUTCHEON

67304802

 

 

 

W48602

CLAMP,SPRING

67302500

 

 

 

346811

MOTOR ASSEMBLY,SINGLE

67303020

 

 

 

147581

LOUVER,HORIZONTAL

67306203

 

 

 

147582-1

LOUVER,VERTICAL

67306252

 

 

 

147582-2

LOUVER,VERTICAL

67306253

 

 

 

349600

BRACKET,MOTOR

67303606

 

 

 

149980

SHROUD

67303111

 

 

 

550140

DAMPER,COMPRESSOR

67305000

 

 

 

152302

FILTER,AIR

67304304

 

 

 

352380

AIR GUIDE

67302735

 

 

 

359012

FAN,TURBO

67302608

 

 

 

559011

FAN ASSEMBLY,AXIAL

67303202

567480

THERMISTOR ASSEMBLY

67307808

 

 

 

264110

POWER CORD ASSEMBLY

67300029

 

 

 

267110

REMOTE CONTROLLER ASSEMBLY

67302239

 

 

 

567502

OverloadProtect

67301906

 

 

 

268711-2

PWB(PCB) ASSEMBLY,MAIN

67307645

 

 

 

268711-1

PWB(PCB) ASSEMBLY,DISPLAY

67307646

 

 

 

435300

PLASTIC REAR AIR DEFLECTOR

67307208

 

 

 

237200

PANEL,CONTROL

67305527

731273

INSTALL PART ASSEMBLY,SINGLE

67306307

 

 

 

249950

CASE ASSEMBLY,CONTROL

67305530

 

 

 

435301

GRILLE,REAR

67304801

 

 

 

349480

ORIFICE

67303406

 

 

 

753000

Heater,Electric

67310100

 

 

 

Service Manual 29

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)357-4480

Printed in the U.S.A

Unifit Heat Cool Svc Parts 2010 (05/10)