Friedrich US12D30 Parts List

Unifit Heat Cool Svc Parts 2010 (05/10)

Thru-the-Wall Series

230 Volts UE10C33 UE12C33

Unifit. Cool (03/07)

Thru-the-Wall Series

Service and Parts

Ma

nual

115 Volts UE08C13

R

Uni- Fit

2 Room Air Conditioner

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

........................................

Service Manual 3

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.

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

WARNING

CAUTION

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

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.

Always plug into a gr ounded
outlet.

• Otherwise, it may cause a fire or
electrical shock.

Do not modify or extend the
power cord length.

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

Do not disassemble or modify
products.

• It may cause failure and electric
shock.

Be caution when unpacking and
installing.

• Sharp edges may cause injury.

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

• It may cause explosion or fire.

Be sure not to do.

Be sure to follow the instruction.

M
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POW
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Gasolin

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F
2 H
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4 Room Air Conditioner

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 share the outlet with
other appliances.

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

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.

Do not place the power cord
near a heater.

• It may cause fire and electric
shock.

Do not allow water to run into
electric parts.

• It will cause failure of machine or
electric 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.

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

• Otherwise, it may electrical
shock and failure.

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

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

• An oxygen shortage may occur.

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

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

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

• Prevent accidental startup and the
possibility of injury.

M
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TIM
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Wax

Thinner

MODE

TIMER

POWER

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TIM

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Sa

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F
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F
2
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MODE

TIMER

POWE

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SPEED

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Heat

En

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Saver

Cool

Timer

TE

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F
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F
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H
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MODE

TIMER

POWER

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Service Manual 5

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.

Do not damage or use an
unspecified power cord.

• It will cause electric shock or fire.

Do not operate with wet hands
or in damp environment.

• It will cause electric shock.

Hold the plug by the head when
taking it out.

• It may cause electric shock and
damage.

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

• Otherwise, it may cause explo­sion, and a fire.

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

• They are sharp and may cause
injury.

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.

M
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P
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FAN
SPEED

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F

F1
L
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F2 HIGH

M

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F

F
1 L
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F
2 HIGH

M

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T
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P
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E
R

FAN
SPEED

F
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F

F
1 L
O
W

F2 HIGH

CAUTION

■ Installation

6 Room Air Conditioner

Safety Precautions

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

• It may cause injury.

Do not block the inlet or outlet
of air flow.

• It may cause product failure.

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

• The appearance of the air condi-

tioner may deteriorate, change
color, or develop surface flaws.

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.

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

• Operation without filters will cause
failure.

Do not drink water drained from
air conditioner.

• It contains containments and will
make you sick.

Be cautious not to touch the
sharp edges when installing.

• It may cause injury.

Avoid excessive cooling and
perform ventilation sometimes.

• Otherwise, it may do harm to
your health.

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

• Otherwise, it may cause person­al injury.

■ Operation

M

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D
E

T
IM
E
R

P
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W
E
R

FA

N

SPEED

F
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C
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F

F1
LOW
F2 HIGH

M

O
D
E

T
I
M
E
R

P
O
W
E
R

F

AN

SPEED

F
a
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H
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S
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C
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F

F1 L
O
W

F2 H
IGH

M

O
D
E

T
IM
E
R

P
O
W
E
R

FA

N

SPEED

F
a
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H
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S
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C
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F

F
1
L
O
W

F2 HIGH

M
O
D

E
T
I
M
E

R

P
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W

E
R

FAN
SPEED

Fan
Heat

E
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g
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S
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Cool

Timer

T
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P

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F

F
1
L

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F
2
H

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H

M

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T
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P
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E
R

FAN
SPEED

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F

F1 LOW
F2 HIGH

M

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T
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R

P
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R

F
A

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S
P
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F
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Save
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T
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TE

MP

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F
1
L
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F
2
H
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H

M

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P
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W
E
R

FAN
SPEED

F
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F

F
1 L
OW

F2 HIGH

7 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-OFF TIME

You will usually use shut-off time while you sleep.

If unit is running,use Timer to set number of hours until shut-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→
→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→
→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-only operation.

HEAT:

Fan runs continually for normal heating operation.

。

2Hour →...

2Hour →...

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.

AUTO RESTART

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

Service Manual 8

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

The tmeperature can be set within a range of
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-OFF TIME

You will usually use shut-off time while you sleep.

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

For your sleeping comfort，once Timer is set，the Temperature

。

raise 2 F after 30 min

Push Timer button to advance setting from 1Hour→

→12Hours maximum.

，

and once again after another

temperature of the room.

。

60 F to 86 F by

。

30 min.

2Hour →...

setting will

START TIME

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

Push Timer button to advance setting from 1Hour→

→12Hours maximum.

2Hour →...

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-only operation.

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 9

Disassembly Instructions

Disassembly Instructions

Mechanical Parts

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

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-install the component by referring to the
removal procedure.

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-install the 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. 1

FIG. 3

FIG. 2

MODE

TIMER

POWER

FAN

SPEED

Fan

Energy
Saver

Cool

Timer

TEMP

'

F

F
1
L

O
W

F2
M

E
D

F
3
H

IG
H

MODE TIMER POWER

FAN
SPEED

Fan
Heat

Energy
Saver

Cool

Timer

TEMP

'

F

F1 LOW
F2 HIGH

MODE

TIMER

POWER
F

A

N

S

P

E

E

D

F

a

n

H

e

a

t

Energy

Saver

C

o

o

l

T

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m

e

r

TEM

P

'

F

F1 LOW
F2 HIGH

M
O
D

E

T
IM
E
R

P
O
W

E

R

FAN
SPEED

Fan

Energy
Saver

Cool

Timer

TEMP

'

F

F
1
L
O

W

F

2
M
E

D

F

3
H
IG

H

10 Room Air Conditioner

Disassembly Instructions

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-install the 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-install the components by referring to the removal

procedure, above.

Air Handling Parts

MODE

TIMER

POW

ER

FAN

SPEED

Fan

En
e

rg

y

Saver

C

o
o

l

Timer

TE

M

P

'

F

F1 LO

W

F
2 M

ED

F3 HIGH

FIG. 4

FIG. 5

FIG. 6

FIG. 7

FIG. 8

Service Manual 11

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-install the component by referring to the
removal procedure, above.

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-install the components by referring to the
removal procedure, above.

8. COMPRESSOR

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

2. Discharge the refrigerant system using Freon

TM

Recovery System.
If there is no valve to attach the recovery system,
install one (such as a WATCO A-1) before venting
the Freon

TM

. 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-instill the 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-install the components by referring to the
removal procedure, above.

Disassembly Instructions

Electrical Parts

FIG. 9

FIG. 11

FIG. 12

MODE

TIMER

POWER

FAN

SPEED

Fan

Energy

Saver

Cool

Timer

TEMP

'

F

F1 LO

W

F2 MED
F3 HIG

H

FIG. 10

12 Room Air Conditioner

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-install the component by referring to the
removal procedure, above.
(Use only one ground-marked hole for 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.)

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-install the components by referring to the
removal procedure, above.

MODE

TIMER

POWER

FAN

SPEED

Fan

Energy

Saver

Cool

Timer

TEMP

'

F

F1 LOW
F2 MED
F3 HIGH

MODE

TIMER

POWER

FAN

SPEED

Fan

Energy

Saver

Cool

Timer

TEMP

'

F

F1 LOW
F2 MED
F3 HIGH

FIG. 13

FIG. 14

Service Manual 13

Disassembly Instructions

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
connections.

5. Remove the condenser.

6. Re-install the 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-install the components by referring to notes.
(See 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-install the components by referring to notes.

FIG. 15

FIG. 16

Refrigerating Cycle

Discharge the refrigerant system using Freon

TM

Recovery System.
If there is no valve to attach the recovery system,
install one (such as a WATCO A-1) before vent­ing the Freon

TM

. Leave the valve in place after

servicing the system.

CAUTION

MODE

TIMER

POW

ER

FAN

SPEED

Fan

Energy
Saver

Cool

Timer

TEM

P

'

F

F1 LOW
F2 MED
F3 HIGH

14 Room Air Conditioner

Disassembly Instructions

— Replacement of the refrigeration cycle.

1. When replacing the refrigeration cycle, be sure to
discharge the refrigerant system using a Freon

TM

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-off
tubes.

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.

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.

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 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 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-side will 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-side gauge; 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-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.

NOTICE

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.

CAUTION

Service Manual 15

Disassembly Instructions

Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment. Pinch-off tool capa­ble of making a vapor-proof seal, Leak detector, Tubing cutter, Hand Tools to remove components, Service valve.

A

COMPOUND GAUGE

EVAPORATOR
(LOW PRESSURE SIDE)

COMPRESSOR

CAPILLARY TUBE

CONDENSER
(HIGH PRESSURE SIDE)

SEE INSETS

BELOW

MANIFOLD

GAUGE

B

FIG. 17A-Pulling Vacuum

FIG 17B-Charging

A

B

EXTERNAL
VACUUM PUMP

LOW

B

HI

A

CHARGING
CYLINDER

C

16 Room Air Conditioner

Schematic Diagram

Schematic Diagram

Wiring Diagram

■ ELECTRIC HEATING MODEL

Troubleshooting Guide

Troubleshooting Guide

Piping System

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.

MOTOR

COMPRESSOR

OIL

(LIQUID REFRIGERANT)

CAPILLARY TUBE

OUTSIDE COOLING
AIR FOR REFRIGERANT
PASS THROUGH

SUCTION LIME
COOL LOW PRESSURE VAPOR

COOLED
AIR

COMPLETE LIQUID
BOIL OFF POINT

LIQUID
PRESSURE
DROP

ROOM AIR HEAT LOAD

VAPOR INLET

HOT
DISCHARGED
AIR

LIQUID OUTLET

HIGH PRESSURE VAPOR
LIQUID PEFRIGERANT
LOW PRESSURE VAPOR

ROOM AIR CONDITIONER

EVAPORATOR COILS CONDENSER COILS

CYCLE OF REFRIGERATION

FIG. 18

Service Manual 17

CONDENSER COILS

FAN

CAPILLARY TUBE

MOTOR

COMPRESSOR

TURBO FAN

EVAPORATOR COILS

: REFRIGERANT FLOW

18 Room Air Conditioner

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 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

Check of cold air circulation
for smooth flow.

Dirty indoor coil
(Heat exchanger)

Malfunction of fan

Clogged of air filter

Obstruction at air outlet

Correct above trouble

Stop of auto air-swing

Check clogging in
refrigeration circuit.

Repair clogging in
refrigeration circuit.

Service Manual 19

Troubleshooting Guide

Fails to Start

Check of circuit breaker
and fuse.

Gas leakage of feeler bulb
of thermostat

Check of control switch.

Only fan fails to start.

Improper wiring.

Defect of fan motor
capacitor.

Irregular motor resistance
( ).
Irregular motor insulation
( ).

Replacement of fan motor

Regular but fails to start

Replacement of compressor
(locking of rotor, metal)

Improper thermostat setting

Loose terminal connection.

Improper wiring

Irregular motor resistance ( )

Irregular motor insulation ( )

Replacement of compressor
(Motor damaged)

Drop of power voltage.

Check capacitor.

Replacement.

Only compressor fails to
start.

Defect of compressor
capacitor.

Check of power source.

Check of control switch
setting.

20 Room Air Conditioner

Troubleshooting Guide

YDEMERESUACTNIALPMOC

Check voltage at outlet. Correct if none.

Connect wire. Refer to wiring diagram for terminal
identification. Repair or replace loose terminal.

Test capacitor.
Replace if not within ±10% of manufacturer's
rating. Replace if shorted, open, or damaged.

Fan blade hitting shroud or blower wheel hitting
scroll. Realign assembly.

Units using slinger ring condenser fans must
have

1

/4to5/16inch 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.

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.

Check grommets; if worn or missing, replace them.

If cracked, out of balance, or partially missing,
replace it.

If cracked, out of balance, or partially missing,
replace it.

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.

No power

Wire disconnected or
connection loose

Capacitor (Discharge
capacitor before testing.)

Will not rotate

Revolves on overload.

Grommets

Fan

Turbo fan

Loose set screw

Worn bearings

Fan motor will not run.

Fan motor runs
intermittently

Fan motor noise.

Service Manual 21

Troubleshooting Guide

NAME PLATE RATING MINIMUM MAXIMUM

115V 103.5V 126.5V

208/230V 187V 253V

YDEMERESUACTNIALPMOC

Check voltage. See the limits on the preceding.
page. If not within limits, call an electrician.

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 the capacitor.
Replace if not within ±10% of manufacturers
rating. Replace if shorted, open, or damaged.

Check the compressor for open circuit or
ground. If open or grounded, replace the compres­sor.

Check the compressor overload, if externally
mounted. Replace if open. (If the compressor
temperature is high, remove the overload, cool it,
and retest.)

Voltage

Wiring

Capacitor (Discharge
capacitor before
servicing.)

Compressor

Overload

Compressor will not run,
but fan motor runs.

ROOM AIR CONDITIONER VOLTAGE LIMITS

22 Room Air Conditioner

COMPLAINT CAUSE

REMEDY

Check the voltage. See the limits on the preced­ing page. If not within limits, call an electrician.

Check overload, if externally mounted.
Replace if open. (If the compressor temperature
is high, remove the overload, cool, and retest.)

If not running, determine the cause. Replace if
required.

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.

If condenser fins are closed over a large area
on the coil surface, head pressures will increase,
causing the compressor to cycle. Straighten the
fins or replace the coil.
Test capacitor.
Check the terminals. If loose, repair or replace.
Check the system for a restriction.
If restricted, clean of replace.
Close if open.
Determine if the unit is properly sized for the area to
be cooled.
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 and carefully rearrange tubing
not to contact cabinet, compressor, shroud, and bar­rier.

Voltage

Overload

Fan motor

Condenser air flow
restriction

Condenser fins
(damaged)

Capacitor
Wiring
Refrigerating system
Air filter
Exhaust damper door
Unit undersized

Blower or fan

Copper tubing

Compressor cycles
on overload.

Insufficient cooling or heat­ing

Excessive noise.

Troubleshooting Guide

Service Manual 23

Product Specifications

ITEMS

COOLING

HEATING

OPERATING
TEMPERATURE

REFRIGERANT(R410A)

EVAPORATOR

CONDENSER

FAN,INDOOR

FAN,OUTDOOR

FAN,SPEEDS

FAN,MOTOR

OPERATION CONTROL

ROOM TEMP.CONTROL

AIR DIRECTTION CONTROL

CONSTRUCTION

ELECTRIC HEATER

PROTECTOR

POWER CORD

DRAIN SYSTEM

NET WEIGHT(lbs/kg)

DIMENSION
(Wx Hx D)

SLEEVE DIMESION
(Wx Hx D)

SLEEVE DEPTH

WITH FRONT GRILLE

MODELS

COOLING

HEATING

(FAN/COOLING/HEATING)

COMPRESSOR

FAN,MOTOR

ELECTRIC HEATER

REMARK

POWER SUPPLY

CAPACITY(Btu/h)

INPUT(W)

RUNNING CURRENT(A)

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

CAPACITY(Btu/h)

INPUT(W)

RUNNING CURRENT(A)

INDOOR(

OUTDOOR(

INDOOR(

OUTDOOR(

CHARGE(g）

(

( mm)

(

(

(

(

°F)

°F)

°F)

°F)

inch)

inch)

mm)

inch)

mm)

Ø5.0 3 ROW 18 STACKS,L-BENDED TYPE

PROPELLER TYPE FAN WITH SLINGER-RING

VERTICAL LOUVER (RIGHT&LEFT)

HORIZONTAL LOUVER (UP&DOWN)

EXTERNAL OVERLOAD PROTECTOR

INTERANL THERMAL PROTECTOR

FUSE LINK,BIMETAL THERMOSTAT

1.92m（3WIRE WITH GROUDING)

ATTACHMENT PLUG(CORD-CONNECTED TYPE)

SPLASHED BY FAN SLINGER

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

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

UE08C13

Ø,115V,60HZ

1

8,000

830

7.5

9.6

3,850

1,230

10.7

80

(DB)

(DB)

95

(DB)

70

47

320

2 ROW 12 STACKS

TURBO FAN

TOUCH PANEL

THERMISTOR

TOP - DOWN

3.5KW,230V

656 x 366 x 499

656 x 394 x 425

67

75

60

44

(DB)

(11.3OZ)

2/2/2

6 POLES

80/36

20

510

(WB)

(WB)

(

(

WB

WB

)

)

LOUVER­FIN TYPE

OPTIONA PART

Product Specifications

24 Room Air Conditioner

ITEMS

COOLING

HEATING

OPERATING
TEMPERATURE

REFRIGERANT(R410A)

EVAPORATOR

CONDENSER

FAN,INDOOR

FAN,OUTDOOR

FAN,SPEEDS

FAN,MOTOR

OPERATION CONTROL

ROOM TEMP.CONTROL

AIR DIRECTTION CONTROL

CONSTRUCTION

ELECTRIC HEATER

PROTECTOR

POWER CORD

DRAIN SYSTEM

NET WEIGHT(lbs/kg)

DIMENSION
(Wx Hx D)

SLEEVE DIMESION
(Wx Hx D)

SLEEVE DEPTH

WITH FRONT GRILLE

MODELS

COOLING

HEATING

(FAN/COOLING/HEATING)

COMPRESSOR

FAN,MOTOR

ELECTRIC HEATER

REMARK

POWER SUPPLY

CAPACITY(Btu/h)

INPUT(W)

RUNNING CURRENT(A)

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

CAPACITY(Btu/h)

INPUT(W)

RUNNING CURRENT(A)

INDOOR(

OUTDOOR(

INDOOR(

OUTDOOR(

CHARGE(g）

(

( mm)

(

(

(

(

°F)

°F)

°F)

°F)

inch)

inch)

mm)

inch)

mm)

2 ROW 18 STACKS,L-BENDED TYPE 1 ROW

PROPELLER TYPE FAN WITH SLINGER-RING

VERTICAL LOUVER (RIGHT&LEFT)

HORIZONTAL LOUVER (UP&DOWN)

EXTERNAL OVERLOAD PROTECTOR

INTERANL THERMAL PROTECTOR

FUSE LINK,BIMETAL THERMOSTAT

1.92m（3WIRE WITH GROUDING)

ATTACHMENT PLUG(CORD-CONNECTED TYPE)

SPLASHED BY FAN SLINGER

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

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

UE10C33

Ø,230/208V,60HZ

1

000/9 800

10

1,080/1

11

3,500/2 900

80

95

70

47

440

3 ROW 12 STACKS

TURBO FAN

TOP - DOWN

656 x 366 x 499

656 x 394 x 425

040

4.7/5.2

9.4/9.4

200/9 200

15.3/14.0

67

(DB)

(DB)

(DB)

(DB)

(WB)

75

(WB)

(

60

WB

(

44

WB

(15.5OZ)

2/2/2

6 POLES

TOUCH PANEL

THERMISTOR

3.5KW,230V

80/36

20

510

)

)

LOUVER­FIN TYPE

OPTIONA PART

Product Specifications

Service Manual 25

ITEMS

COOLING

HEATING

OPERATING
TEMPERATURE

REFRIGERANT(R410A)

EVAPORATOR

CONDENSER

FAN,INDOOR

FAN,OUTDOOR

FAN,SPEEDS

FAN,MOTOR

OPERATION CONTROL

ROOM TEMP.CONTROL

AIR DIRECTTION CONTROL

CONSTRUCTION

ELECTRIC HEATER

PROTECTOR

POWER CORD

DRAIN SYSTEM

NET WEIGHT(lbs/kg)

DIMENSION
(Wx Hx D)

SLEEVE DIMESION
(Wx Hx D)

SLEEVE DEPTH

WITH FRONT GRILLE

MODELS

COOLING

HEATING

(FAN/COOLING/HEATING)

COMPRESSOR

FAN,MOTOR

ELECTRIC HEATER

REMARK

POWER SUPPLY

CAPACITY(Btu/h)

INPUT(W)

RUNNING CURRENT(A)

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

CAPACITY(Btu/h)

INPUT(W)

RUNNING CURRENT(A)

INDOOR(

OUTDOOR(

INDOOR(

OUTDOOR(

CHARGE(g）

(

( mm)

(

(

(

(

°F)

°F)

°F)

°F)

inch)

inch)

mm)

inch)

mm)

2 ROW 18 STACKS,L-BENDED TYPE 1 ROW

PROPELLER TYPE FAN WITH SLINGER-RING

VERTICAL LOUVER (RIGHT&LEFT)

HORIZONTAL LOUVER (UP&DOWN)

EXTERNAL OVERLOAD PROTECTOR

INTERANL THERMAL PROTECTOR

FUSE LINK,BIMETAL THERMOSTAT

1.92m（3WIRE WITH GROUDING)

ATTACHMENT PLUG(CORD-CONNECTED TYPE)

SPLASHED BY FAN SLINGER

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

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

UE12C13

Ø,230/208V,60HZ

1

500/11,200

11

1,220/1

11

3,500/2 900

80

95

70

47

540

3 ROW 12 STACKS

TURBO FAN

TOP - DOWN

656 x 366 x 499

656 x 394 x 425

190

5.6/6.0

9.4/9.4

200/9 200

15.3/14.0

67

(DB)

(DB)

(DB)

(DB)

(WB)

75

(WB)

(

60

WB

(

44

WB

(19.0OZ)

2/2/2

6 POLES

TOUCH PANEL

THERMISTOR

3.5KW,230V

80/36

20

510

)

)

LOUVER­FIN TYPE

OPTIONA PART

Exploded View

Exploded View

349600

567502

W48602

550140

359012

B

249940

249950 267110

A

264110

238310

W0CZZ

237200

MODE

TIMER

POWER

FAN

SPEED

Fan

Energy
Sav

e

r

Cool

Timer

T
EM

P

'

F

F1
L
O

W

F
2M
ED

F

3
H
IGH

552206

753000

349480

W48602

559011

346811

349001

130410

148000

149980

135313

C

D

E

26 Room Air Conditioner

731273

132100

135312

352380

147581

147582-1

145200

147582-2

152302

130900

435300

435301

268711-2

567480

268711-1

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

5

50140 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,CON

TROL 67305527

731273 INSTALL PART ASSEMBLY,SINGLE 67306307

249950 CASE ASSEMBLY,CONTROL 67305528

435301 GRILLE,REAR 67304801

349480 ORIFICE 67303406

753000 Heater,Electric 67310101

Description

LocNo

UE08C13

Service Manual 27

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

5

50140 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,CO

NTROL 67305527

731273 INSTALL PART ASSEMBLY,SINGLE 67306307

249950 CASE ASSEMBLY,CONTROL 67305529

435301 GRILLE,REAR 67304801

349480 ORIFICE 67303406

753000 Heater,Electric 67310100

Description

LocNo

UE10C33

28 Room Air Conditioner

Service Manual 29

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

5

50140 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,CO

NTROL 67305527

731273 INSTALL PART ASSEMBLY,SINGLE 67306307

249950 CASE ASSEMBLY,CONTROL 67305530

435301 GRILLE,REAR 67304801

349480 ORIFICE 67303406

753000 Heater,Electric 67310100

Description

LocNo

UE12C33

Unifit Heat Cool Svc Parts 2010 (05/10)Printed in the U.S.A

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

• [phone] • FAX [phone]

FRIEDRICH AIR CONDITIONING CO.

Visit our web site at www.friedrich.com