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
O
DE
TIM
ER
POW
ER
F
A
N
S
P
E
E
D
F
a
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
TEMP
'
F
F
1
L
O
W
F
2
H
I
G
H
M
O
D
E
T
I
M
E
R
P
O
W
E
R
F
A
N
S
P
EE
D
Fan
Heat
E
n
e
r
g
y
S
a
v
e
r
Cool
Tim
er
T
E
M
P
'
F
F
1
L
O
W
F2 H
IG
H
M
O
D
E
T
I
M
E
R
P
O
W
E
R
FA
N
SP
EED
F
a
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F
1
L
O
W
F
2
H
I
G
H
M
O
D
E
T
I
M
E
R
P
O
W
E
R
F
A
N
S
P
E
E
D
F
a
n
H
e
a
t
Energy
Saver
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F
1
L
O
W
F2
H
IG
H
Gasolin
M
O
D
E
T
IM
E
R
P
O
W
E
R
F
A
N
S
P
E
E
D
F
a
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F
1
L
O
W
F
2 H
IG
H
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
OD
E
TIM
E
R
P
O
W
E
R
F
A
N
S
P
E
E
D
F
a
n
H
e
a
t
E
n
e
r
g
y
Sav
er
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F
1
L
O
W
F
2
H
I
G
H
M
O
D
E
T
I
M
E
R
P
O
W
E
R
F
A
N
S
P
E
E
D
F
an
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F
1
L
O
W
F
2
H
I
G
H
M
O
D
E
T
IM
E
R
P
O
W
E
R
F
A
N
S
P
E
E
D
F
a
n
H
e
a
t
E
n
e
rg
y
S
a
ve
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F
1
L
O
W
F
2
H
I
G
H
M
O
D
E
T
I
M
E
R
P
O
W
E
R
F
A
N
S
P
E
E
D
F
an
H
e
at
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
Tim
e
r
T
E
M
P
'
F
F
1
L
O
W
F
2
H
IG
H
Wax
Thinner
MODE
TIMER
POWER
F
A
N
S
P
E
E
D
F
a
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F
1
L
O
W
F
2
H
I
G
H
M
ODE
TIM
ER
PO
W
ER
FAN
SPEED
F
a
n
H
e
a
t
E
nerg
y
Sa
ver
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F
1
L
O
W
F
2
H
I
G
H
MODE
TIMER
POWE
R
F
A
N
SPEED
F
a
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F
1
L
O
W
F
2
H
I
G
H
M
O
D
E
T
IM
E
R
P
O
W
E
R
FA
N
S
PEE
D
Fan
Heat
En
er
g
y
Saver
Cool
Timer
TE
M
P
'
F
F
1
L
O
W
F
2
H
I
G
H
MODE
TIMER
POWER
F
A
N
S
P
E
E
D
F
a
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F
1
L
O
W
F
2
H
I
G
H
M
O
D
E
T
I
M
E
R
P
O
W
E
R
F
A
N
S
P
E
E
D
F
a
n
H
ea
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
im
e
r
T
E
M
P
'
F
F
1
L
O
W
F
2
H
IG
H
M
O
D
E
T
I
M
E
R
P
O
W
E
R
F
A
N
S
P
E
E
D
F
an
He
at
Ene
rgy
Saver
Co
ol
T
ime
r
T
E
M
P
'
F
F
1
L
O
W
F
2
H
I
G
H
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
O
D
E
T
I
M
E
R
P
O
W
E
R
F
A
N
S
P
E
E
D
F
a
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F
1
L
O
W
F
2
H
I
G
H
M
O
D
E
T
IM
E
R
P
O
W
E
R
FAN
SPEED
F
a
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F1
L
OW
F2 HIGH
M
O
D
E
T
I
M
E
R
P
O
W
E
R
F
A
N
S
P
E
E
D
F
a
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
TEMP
'
F
F
1
L
O
W
F
2
H
IG
H
M
O
D
E
T
I
M
E
R
P
O
W
E
R
FA
N
SPEED
F
a
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F
1 L
OW
F
2 HIGH
M
O
D
E
T
I
M
E
R
P
O
W
E
R
FAN
SPEED
F
a
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
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
O
D
E
T
IM
E
R
P
O
W
E
R
FA
N
SPEED
F
a
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F1
LOW
F2 HIGH
M
O
D
E
T
I
M
E
R
P
O
W
E
R
F
AN
SPEED
F
a
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
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
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F
1
L
O
W
F2 HIGH
M
O
D
E
T
I
M
E
R
P
O
W
E
R
FAN
SPEED
Fan
Heat
E
n
e
r
g
y
S
a
v
e
r
Cool
Timer
T
E
M
P
'
F
F
1
L
O
W
F
2
H
I
G
H
M
O
D
E
T
IM
E
R
P
O
W
E
R
FAN
SPEED
F
a
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
F
F1 LOW
F2 HIGH
M
O
D
E
T
I
M
E
R
P
O
W
E
R
F
A
N
S
P
E
E
D
F
a
n
H
e
a
t
E
n
erg
y
Save
r
C
o
o
l
T
i
m
e
r
TE
MP
'
F
F
1
L
O
W
F
2
H
I
G
H
M
O
D
E
T
IM
E
R
P
O
W
E
R
FAN
SPEED
F
a
n
H
e
a
t
E
n
e
r
g
y
S
a
v
e
r
C
o
o
l
T
i
m
e
r
T
E
M
P
'
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
i
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
Loading...