Page 1
ROOM AIR CONDITIONER
SERVICE MANUAL
CAUTION
- BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
- ONLY FOR AUTHORIZED SERVICE
MODELS: R1402/R1802/R1801H/M1802/R2102/R2402
R1803/R1804/R1803H/M1803R/R2103/R2403
LWM1836BCG/LWM1836BAG/LWM1836BAS/LWC243NSAB0
Y5USC18-6A/Y5USC24-6A/LWN2432BCG/LWN2432BAG
website http://biz.LGservice.com
e-mail http://www.LGEservice.com/techsup.html
Page 2
—2—
1. PREFACE
1.1 SAFETY PRECAUTIONS ...............................2
1.2 INSULATION RESISTANCE TEST.................2
1.3 SPECIFICATIONS ..........................................3
1.4 FEATURES.....................................................7
1.5 CONTROL LOCATIONS.................................7
2.
DISASSEMBLY INSTRUCTIONS
2.1 MECHANICAL PARTS..................................10
2.1.1 FRONT GRILLE...................................10
2.1.2 CABINET..............................................10
2.1.3 CONTROL BOX...................................10
2.2 AIR HANDLING PARTS................................11
2.2.1 COVER (AT THE TOP)........................11
2.2.2 BLOWER..............................................11
2.2.3 FAN......................................................12
2.2.4 SHROUD..............................................12
2.3 ELECTRICAL PARTS...................................12
2.3.1 MOTOR................................................12
2.3.2 COMPRESSOR...................................12
2.3.3 CAPACITOR........................................13
2.3.4 POWER CORD....................................13
2.3.5 THERMOSTAT ....................................13
2.3.6 ROTARY SWITCH...............................14
2.3.7 SYNCHRONOUS MOTOR ..................14
2.4 REFRIGERATION CYCLE............................15
2.4.1 CONDENSER......................................15
2.4.2 EVAPORATOR....................................15
2.4.3 CAPILLARY TUBE...............................15
3.
INSTALLATION
3.1 HOW TO INSTALL THE UNIT ......................18
3.2
HOW TO USE THE REVERSIBLE INLET GRILLE
.......
18
3.3 WINDOW REQUIREMENTS.........................19
3.4 INSTALLATION KITS CONTENTS...............19
3.5 SUGGESTED TOOL REQUIREMENTS.......20
3.6 CABINET INSTALLATION............................21
4.
TROUBLESHOOTING GUIDE
4.1 OUTSIDE DIMENSIONS...............................23
4.2 PIPING SYSTEM ..........................................23
4.3 TROUBLESHOOTING GUIDE......................24
5. SCHEMATIC DIAGRAM
5.1 CIRCUIT DIAGRAM......................................29
5.2 ELECTRONIC CONTROL DEVICE..............34
5.3
COMPONENTS LOCATION(FOR MAIN P.C.B ASM
).......36
5.4
COMPONENTS LOCATION(FOR DISPLAY P.C.B ASM)
.......37
6. EXPLODED VIEW..................................38
7. REPLACEMENT PARTS LIST.......40
1. PREFACE
This
SERVICE MANUAL provides various service information, including the mechanical and electrical
parts etc. This room air conditioner was manufactured and assembled under a strict quality control system.
The refrigerant is charged at the factory. Be sure to read the safety precautions prior to servicing the unit.
1.1 SAFETY PRECAUTIONS
1. When servicing the unit, set the ROTARY SWITCH
or POWER SWITCH to OFF and unplug the power
cord.
2. Observe the original lead dress.
If a short circuit is found, replace all parts which
have been overheated or damaged by the short
circuit.
3. After servicing the unit, make an insulation
resistance test to protect the customer from being
exposed to shock hazards.
1.2
INSULATION RESISTANCE TEST
1. Unplug the power cord and connect a jumper
between 2 pins (black and white).
2. The grounding conductor (green or green & yellow)
is to be open.
3. Measure the resistance value with an ohm meter
between the jumpered lead and each exposed
metallic part on the equipment at all the positions
(except OFF or O) of the ROTARY SWITCH.
4. The value should be over 1MΩ.
CONTENTS
Page 3
—3—
1.3 SPECIFICATIONS
1.3.1 FOR R1402/R1802/R2102/R2402
R1402 R1802 R2102 R2402
REMARK
POWER SUPPLY
1Ø, 115V, 60Hz 1Ø, 208/230V, 60Hz
COOLING CAPACITY (Btu/h) 14,000
17,500/ 18,000
20,500/21,000 23,500/24,000
INPUT (W) 1,380 1,800/ 1,850 2,410/2,470 2,760/2,820
RUNNING CURRENT (A) 12.0 9.0/ 8.3 11.8/10.8 13.7/12.7
REFRIGERANT (R-22) CHARGE(g)
680(24.0 OZ) 800(28.2 OZ) 730(25.8 OZ) 890(31.4 OZ)
INDOOR (°C) 26.7(DB) 19.4(WB)
OUTDOOR (°C) 35(DB) 23.9(WB)
EVAPORATOR
3 ROW 15 STACKS
4 ROW 18 STACKS
CONDENSER
FAN, INDOOR BLOWER
FAN, OUTDOOR PROPELLER TYPE FAN WITH SLINGER-RING
FAN SPEEDS, FAN/COOLING 2/3
FAN MOTOR 6 POLES
OPERATION CONTROL ROTARY SWITCH
ROOM TEMP. CONTROL THERMOSTAT
VERTICAL LOUVER(RIGHT & LEFT)
HORIZONTAL LOUVER(UP & DOWN)
CONSTRUCTION SLIDE IN-OUT CHASSIS
COMPRESSOR
FAN MOTOR INTERNAL THERMAL PROTECTOR
1.8m(3WIRE WITH GROUNDING)
1.6m (3 WIRE WITH GROUNDING)
1.3m (3 WIRE WITH GROUNDING)
ATTACHMENT PLUG(CORD-CONNECTED TYPE)
DRAIN SYSTEM DRAIN PIPE OR SPLASHED BY FAN SLINGER
NET WEIGHT (lbs/kg) 117/53 120/54 143/65 146/66
OUTSIDE DIMENSION (inch) 26 x 16
27
/32 x 269/16 26 x 1627/32 x 30
5
/16
(W x H x D) (mm) 660 x 428 x 675 660 x 428 x 770
MODELS
ITEMS
AIR DIRECTION CONTROL
PROTECTOR
POWER CORD
OPERATING
TEMPERATURE
2 ROW 19 STACKS, L-BENDED TYPE
2 ROW 19 STACKS, U-TYPE
INTERNAL OVERLOAD PROTECTOR
EXTERNAL OVERLOAD PROTECTOR
NOTE: Please refer to Label Quality on the product since this specification may be changed for improving
performance
Page 4
—4—
1.3.2 FOR R1803/R1804/R2103/R2403/LWC243NSAB0
POWER SUPPLY 1Ø, 208/230V, 60Hz
COOLING CAPACITY (Btu/h) 17,500/ 18,000 20,500/21,000 23,500/24,000
INPUT (W) 1,800/ 1,850 2,410/2,470 2,760/2,820
RUNNING CURRENT (A) 9.0/ 8.3 11.8/10.8 13.7/12.7/12.9
REFRIGERANT (R-22) CHARGE(g) 750(26.5 OZ) 710(25.0 OZ) 980(34.6 OZ)
INDOOR (°C) 26.7(DB) 19.4(WB)
OUTDOOR (°C) 35(DB) 23.9(WB)
EVAPORATOR 3 ROW 18 STACKS 3 ROW 15 STACKS
CONDENSER 2 ROW 19 STACKS, L-BENDED TYPE
2 ROW 19 STACKS, U-TYPE
FAN, INDOOR BLOWER
FAN, OUTDOOR PROPELLER TYPE FAN WITH SLINGER-RING
FAN SPEEDS, FAN/COOLING 2/3
FAN MOTOR 6 POLES
OPERATION CONTROL ROTARY SWITCH
ROOM TEMP. CONTROL THERMOSTAT
VERTICAL LOUVER(RIGHT & LEFT)
HORIZONTAL LOUVER(UP & DOWN)
CONSTRUCTION SLIDE IN-OUT CHASSIS
COMPRESSOR INTERNAL OVERLOAD PROTECTOR
FAN MOTOR INTERNAL THERMAL PROTECTOR
1.6m (3 WIRE WITH GROUNDING)
1.3m (3 WIRE WITH GROUNDING)
ATTACHMENT PLUG(CORD-CONNECTED TYPE)
DRAIN SYSTEM DRAIN PIPE OR SPLASHED BY FAN SLINGER
NET WEIGHT (lbs/kg) 120/54 143/65 146/66
OUTSIDE DIMENSION (inch) 26 x 16
27
/32 x 26
9
/16
26 x 16
27
/32 x 30
5
/16
(W x H x D) (mm) 660 x 428 x 675 660 x 428 x 770
R1803
R1804
LWM1836BAG/BAS/BCG
Y5USC18-6A
R2103
R2403/Y5USC24-6A
LWN2432BCG/BAG
LWC243NSAB0
REMARK
MODELS
ITEMS
AIR DIRECTION CONTROL
PROTECTOR
POWER CORD
OPERATING
TEMPERATURE
NOTE: Please refer to Label Quality on the product since this specification may be changed for improving
performance
Page 5
—5—
1.3.3 FOR R1801H
POWER SUPPLY
CAPACITY (Btu/h)
COOLING
INPUT (W)
RUNNING CURRENT
(A)
E.E.R. (Btu/W.h)
CAPACITY (Btu/h)
HEATING INPUT (W)
RUNNING CURRENT
(A)
COOLING
INDOOR (°C)
OUTDOOR (°C)
HEATING
INDOOR (°C)
OUTDOOR (°C)
REFRIGERANT (R-22) CHARGE(g)
EVAPORATOR
CONDENSER
FAN, INDOOR
FAN, OUTDOOR
FAN SPEEDS (FAN/COOLING/HEATING)
FAN MOTOR
OPERATION CONTROL
ROOM TEMP. CONTROL
AIR DIRECTION CONTROL
CONSTRUCTION
ELECTRIC HEATER
COMPRESSOR
PROTECTOR
FAN MOTOR
ELECTRIC HEATER
POWER CORD
DRAIN SYSTEM
NET WEIGHT (lbs/kg)
OUTSIDE DIMENSION (inch)
(W x H x D) (mm)
1Ø, 208/ 230V, 60Hz
17,500/ 18,000
1,940/ 2,000 1,800/1,850
9.6/ 9.0 9.0/8.3
9.0 9.7
9,800/ 12,000
3,100/ 3,670
15.0/ 16.0
26.7 (DB) 19.4 (WB)
35 (DB) 23.9 (WB)
21.1 (DB) 15.6 (WB)
8.3 (DB) 6.1 (WB)
740 (26.1 OZ) 750(26.5 OZ)
3 ROW 15 STACKS 3 ROW 18 STACKS
2 ROW 19 STACKS, L-BENDED TYPE
BLOWER
PROPELLER TYPE FAN WITH SLINGER-RING
1/ 2/ 2
6 POLES
ROTARY SWITCH
THERMOSTAT
VERTICAL LOUVER (RIGHT & LEFT)
HORIZONTAL LOUVER (UP & DOWN)
SLIDE IN-OUT CHASSIS
3.5 KW, 230V
INTERNAL OVERLOAD PROTECTOR
INTERANL THERMAL PROTECTOR
FUSE LINK, BIMETAL THERMOSTAT
1.6m (3 WIRE WITH GROUDING)
ATTACHMENT PLUG (CORD-CONNECTED TYPE)
DRAIN PIPE OR SPLASHED BY FAN SLINGER
123/ 56
26 x 1627/32 x 269/16
660 x 428 x 675
MODELS
ITEMS
OPERATING
TEMPERATURE
LOUVEREDFIN TYPE
R1801H R1803H
REMARK
NOTE: Please refer to Label Quality on the product since this specification may be changed for improving
performance
Page 6
—6—
1.3.4 FOR M1802/M1803R/M1804R
POWER SUPPLY 1Ø, 208/230V, 60Hz
COOLING CAPACITY (Btu/h) 17,500/ 18,000
INPUT (W) 1,800/ 1,850
RUNNING CURRENT (A) 9.0/ 8.3
REFRIGERANT (R-22) CHARGE(g) 800(28.2 OZ) 750(26.5 OZ)
INDOOR (°C) 26.7(DB) 19.4(WB)
OUTDOOR (°C) 35(DB) 23.9(WB)
EVAPORATOR 3 ROW 15 STACKS 3 ROW 18 STACKS
CONDENSER
FAN, INDOOR BLOWER
FAN, OUTDOOR PROPELLER TYPE FAN WITH SLINGER-RING
FAN SPEEDS, FAN/COOLING 3/3
FAN MOTOR 6 POLES
OPERATION CONTROL TOUCH PANEL
ROOM TEMP. CONTROL THERMISTOR
VERTICAL LOUVER(RIGHT & LEFT)
HORIZONTAL LOUVER(UP & DOWN)
CONSTRUCTION SLIDE IN-OUT CHASSIS
COMPRESSOR INTERNAL OVERLOAD PROTECTOR
FAN MOTOR INTERNAL THERMAL PROTECTOR
1.6m (3 WIRE WITH GROUNDING)
ATTACHMENT PLUG(CORD-CONNECTED TYPE)
DRAIN SYSTEM DRAIN PIPE OR SPLASHED BY FAN SLINGER
NET WEIGHT (lbs/kg) 120/54
OUTSIDE DIMENSION (inch) 26 x 16
27
/32
x 26
9
/16
(W x H x D) (mm) 660 x 428 x 675
M1802 M1803R REMARK
MODELS
ITEMS
AIR DIRECTION CONTROL
PROTECTOR
POWER CORD
OPERATING
TEMPERATURE
LOUVEREDFIN TYPE
2 ROW 19 STACKS, L-BENDED TYPE
NOTE: Please refer to Label Quality on the product since this specification may be changed for improving
performance
Page 7
1.4 FEATURES
• Designed for cooling only.
• Powerful and quiet cooling.
• Slide-in and slide-out chassis for the simple installation
and service.
• Reversible inlet grille.
1.5 CONTROL LOCATIONS
1.5.1 COOLING ONLY MODEL
• VENTILATION
The ventilation lever must be in the CLOSE position in
order to maintain the best cooling conditions.
When a fresh air is necessary in the room, set the
ventilation lever to the OPEN position.
The damper is opened and room air is exhausted.
NOTE: Before using the ventilation feature,
make the lever, as shown. First, pull down
part to horizontal line with part .
• THERMOSTAT
Thermostat will automatically control the
temperature of the room. Select the higher number
for the lower temperature of the room. The
temperature is selected by positioning the knob to
the desired position.
The 5 or 6 position is a normal setting for average
conditions.
• OPERATION
OFF : Turns the air conditioner off.
MED FAN : Permits the
medium
fan speed operation
without cooling.
LOW FAN : Permits the low fan speed operation
without cooling.
HIGH COOL: Permits cooling with the high fan speed
operation.
MED COOL : Permits cooling with the medium fan
speed operation.
LOW COOL: Permits cooling with the low fan speed
operation.
• AUTO SWING
ON : Air swing is operated while OPERATION knob
is set to the COOL position.
OFF :Stops the operation of air swing.
• Side air-intake, side cooled-air discharge.
• Built in adjustable THERMOSTAT.
• Washable one-touch filter.
• Compact size.
—7—
Med
Fan
Off
Low
Fan
High
Cool
Med
Cool
Low Cool
Operation
6
7
8
9
5
1
2
3
4
Thermostat
Off On
Auto Swing
Part A
Part B
VENTCLOSE OPEN
Page 8
1.5.2 COOLING AND HEATING MODEL
• CAUTION
When the air conditioner has been performing its
cooling operation and is turned off or set to the fan
position, wait at least 3 minutes before resetting to
the cooling operation again.
• THERMOSTAT
Turn the thermostat control to the desired setting. The
centrol position is a normal setting for average
conditions. You can change this setting, if necessary,
in accordance with your temperature preference.
The thermostat automatically controls cooling or
heating, but the fan runs continuously whenever the air
conditioner is in operation. If the room is too warm,
turn the thermostat control clockwise. If the room is too
cool, turn the themostat control anticlockwise.
• OPERATION
OFF ( ) :Turns the air conditioner off.
FAN ( ) : Permits the low fan speed
operation without cooling
(heating).
LOW COOL ( ) : Permits cooling with the low fan
speed operation.
HIGH COOL( ) : Permits cooling with the high fan
speed operation.
LOW HEAT ( ) : Permits heating with the low fan
speed operation.
HIGH HEAT ( ) : Permits heating with the high fan
speed operation.
• AUTO SWING
ON : Starts the operation of air swing.
OFF : Stops the operation of air swing.
• Before you turn the unit off, please press the Auto Swing
switch to off.
—8—
o
Thermostat
Operation
Wait Three Minutes
Before Restarting
CoolerWarmer
Off
Auto Swing
Off On
Fan Fan
Low Heat Low Cool
High CoolHigh Heat
A slight heat odor may come from the unit when
first switching to HEAT after the cooling season is
over. This odor, caused by fine dust particles on
the heater, will disappear quickly.
Page 9
—9—
POWER BUTTON
Operation starts, when this button is pressed and stops when you press the button again.
OPERATION MODE SELECTION BUTTON
Select Cooling, or Fan or Dehumidification(Dry) mode with button. (Dry mode is not to all models.)
ON/OFF TIMER BUTTON
Set the time of starting and stopping operation. The timer is set by 1 hour.
FAN SPEED SELECTOR
Select the fan speed in three steps.
- High [F3] ➔ Low[F1] ➔ Med[F2]➔ High[F3]... .
ROOM TEMPERATURE SETTING BUTTON
Control the room temperature within a range of 60°F to 86°F by 1°F.
ENERGY SAVER
The fan stops when the compressor stops cooling.
Approximately every 3 minutes the fan will turn on and check the room air to determine if cooling is needed.
AUTO SWING BUTTON
Control the horizontal air direction by air swing system.
6
6
7
7
Precaution: The Remote Control unit will not function properly if strong light strikes the sensor window of the air
conditioner or if there are obstacles between the Remote Control unit and the air conditioner.
1.5.3 COOLING ONLY MODEL WITH TOUCH TYPE
2
3
1
7
6
4
5
Page 10
—10—
2.1 MECHANICAL PARTS
2.1.1 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.
NOTE: Mark ∆ of inlet grille means opening direction.
2.1.2 CABINET
1. After disassembling the FRONT GRILLE, remove
the screws which fasten the cabinet at both sides.
Keep these for later use.
2. Remove the two screws which fasten the cabinet
at back. (See Fig. 2)
3. Pull the base pan forward.
2.1.3 CONTROL BOX
1. Remove the front grille. (Refer to section 2.1.1)
2. Pull the base pan forward so that you can remove
the 2 screws which fasten the cover control at the
right side. (See Fig. 3)
3. Remove the 3 screws which fasten the control
box. (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 page 28~31
in this manual and on the control box.)
2. DISASSEMBLY INSTRUCTIONS
— Before the following disassembly, POWER SWITCH is set to OFF and disconnected the power cord.
Figure 1
Figure 2
Figure 3
Page 11
—11—
2.2 AIR HANDLING PARTS
2.2.1 COVER (AT THE TOP)
1. Remove the front grille. (Refer to section 2.1.1)
2. Remove the cabinet. (Refer to section 2.1.2)
3. Remove 11 screws which fasten the brace and
covers.
4. Remove the covers and the brace. (See Fig. 4)
5. Re-install the components by referring to the
removal procedure, above.
2.2.2 BLOWER
1. Remove the cover. (Refer to section 2.2.1)
2. Remove the 3 screws which fasten the
evaporator at the left side and the top side.
(See Fig. 4)
3. Move the evaporator sideward carefully.
4. Remove the 2 terminals carefully
(See Fig. 5, Electric Heater Model only)
5. Remove the 3 screws which fasten the Heater
Cover.
(See Fig. 5, Electric Heater Model only)
6. Remove the Heater Cover.
(See Fig. 5, Electric Heater Model only)
7. Remove the orifice from the air guide carefully.
(See Fig. 6, Except Electric Heater Model)
8. Remove the clamp which secures the blower with
plier. (See Fig. 6)
9. Remove the blower with plier or your hand
without touching blades. (See Fig. 7)
10. Re-install the components by referring to the
removal procedure, above.
Figure 4
Figure 5
Figure 6
Figure 7
Page 12
—12—
2.2.3 FAN
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the brace and shroud cover.
(Refer to section 2.2.1)
3. Remove the side cover with 2 screws.
(See Fig. 8(b))
4. Remove the 5 or 6 screws which fasten the
condenser.
5. Move the condenser sideways carefully.
6. Remove the clamp which secures the fan.
7. Remove the fan. (See Fig. 8(a), 8(b))
8. Re-install the components by referring to the
removal procedure, above.
2.2.4 SHROUD
1. Remove the fan. (Refer to section 2.2.3)
2. Remove the 2 screws which fasten the shroud.
3. Remove the shroud. (See Fig. 9(a), 9(b))
4. Re-install the component by referring to the
removal procedure, above.
2.3 ELECTRICAL PARTS
2.3.1 MOTOR
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the cover control and disconnect a wire
housing in control box. (Refer to section 2.1.3)
3. Remove the blower. (Refer to section 2.2.2)
4. Remove the fan. (Refer to section 2.2.3)
5. Remove the 4 screws which fasten the motor.
(See Fig. 10(a), 10(b))
6. Remove the motor.
7. Re-install the components by referring to the
removal procedure, above.
2.3.2 COMPRESSOR
1. Remove the cabinet. (Refer to section 2.1.2)
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.
Figure 8(a)
Figure 8(b)
Figure 9(a) Figure 9(b)
Figure 10(a) Figure 10(b)
Figure 11
Page 13
—13—
2.3.3 CAPACITOR
1. Remove the control box. (Refer to section 2.1.3)
2. Remove the screw and knobs which fasten the
display panel.
3. Disconnect the 2 leads from the rocker switch and
remove the panel.
4. Remove a screw and unfold the control box.
(See Fig. 12)
5. Remove the screw and the clamp which fastens
the capacitor. (See Fig. 12)
6. Disconnect all the leads of capacitor terminals.
7. Re-install the components by referring to the
removal procedure, above.
2.3.4 POWER CORD
1. Remove the control box. (Refer to section 2.1.3)
2. Unfold the control box. (Refer to section 2.3.3)
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.)
2.3.5 THERMOSTAT
1. Remove the control box. (Refer to section 2.1.3)
2. Unfold the control box. (Refer to section 2.3.3)
3. Remove the 2 screws which fasten the thermostat.
4. Disconnect all the leads of thermostat terminals.
5. Remove the thermostat. (See Fig. 14)
6. Re-install the components by referring to the
removal procedure, above.
Figure 13
Figure 12
Figure 14
Page 14
2.3.6 ROTARY SWITCH
1. Remove the control box. (Refer to section 2.1.3)
2. Unfold the control box. (Refer to section 2.3.3)
3. Remove 2 screws which fasten the rotary switch.
4. Disconnect all the leads of the rotary switch
terminals.
5. Remove the rotary switch. (See Fig. 15)
6. Re-install the components by referring to the
above removal procedure, above.
2.3.7 SYNCHRONOUS MOTOR
1. Remove the control box. (Refer to section 2.1.3)
2. Unfold the control box. (Refer to section 2.3.3)
3. Remove the crankshaft.
4. Disconnect all the leads of the synchronous
motor.
5. Remove the 2 screws which fasten the
synchronous motor. (See Fig. 16)
6. Re-install the components by referring to the
removal procedure, above.
—14—
Figure 16
Figure 15
Page 15
—15—
2.4 REFRIGERATION CYCLE
2.4.1 CONDENSER
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the brace and the shroud cover.
(Refer to section 2.2.1)
3. Remove 2 screws which fasten the side
cover.(See Fig. 17(b))
4. Remove the 5 or 6 screws which fasten the
condenser.
5. After discharging the refrigerant completely,
unbraze the interconnecting tube at the condenser
connections.
6. Remove the condenser.
7. Re-install the components by referring to notes.
(See Fig. 17)
2.4.2 EVAPORATOR
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the top cover and the brace.
(Refer to section 2.2.1)
3. Discharge the refrigerant completely.
4. Remove the 3 screws which fasten the evaporator
at the left side and the top side.
5. Move the evaporator sideward carefully and then
unbraze the interconnecting tube at the evaporator
connectors.
6. Remove the evaporator.
7. Re-install the components by referring to notes.
(See Fig. 18)
2.4.3 CAPILLARY TUBE
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the brace. (Refer to section 2.2.1)
3. After discharging the refrigerant completely,
unbraze the interconnecting tube at the capillary
tube.
4. Remove the capillary tube.
5. Re-install the components by referring to notes.
Figure 17(a)
Figure 17(b)
Figure 18
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
Page 16
—16—
— 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.
19A.
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. 19B.
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. 19B.
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 30 lbs.
c. Turn off valve B and allow pressure to drop.
d. Repeat steps B and C until the balance of the
charge is in the system.
6) When satisfied the unit is operating correctly,
use the pinch-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.
NOTES
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
Page 17
—17—
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
Figure 19A-Pulling Vacuum
Figure 19B-Charging
A
B
EXTERNAL
VACUUM PUMP
LOW
B
HI
A
CHARGING
CYLINDER
C
Page 18
—18—
3. INSTALLATION
3.1 HOW TO INSTALL THE UNIT
1. To avoid vibration and noise, make sure the unit is installed
securely and firmly.
2. Install the unit where the sunlight does not shine directly on
the unit.
If the unit receives direct sunlight, build an awning to shade
the cabinet.
3. There should be no obstacle, like a fence, within 20" which
might restrict heat radiation from the condenser.
4. To prevent reducing performance, install the unit so that
louvers of the cabinet are not blocked.
5. Install the unit a little obliquely outward not to leak the
condensed water into the room (about 1/2" or 1/4 bubble
with level).
6. Install the unit with its bottom portion 30~60" above the floor
level.
7. Stuff the foam between the top of the unit and the wall to
prevent air and insects from getting into the room.
8. The power cord must be connected to an independent
circuit. The green wire must be grounded.
9. Connect the drain tube to the base pan hole in the rear side
if you need to drain (consult a dealer).
Plastic hose or equivalent may be connected to the drain
tube.
3.2 HOW TO USE THE REVERSIBLE
INLET GRILLE
The grille is designed to clean the filter both upward and
downward.
A. BEFORE ATTACHING THE FRONT
GRILLE TO THE CABINET, IF YOU WANT
TO PULL OUT THE FILTER UPWARD;
1. Open the inlet grille slightly (a).
2. Turn inside out the front grille (a).
3. Disassemble the inlet grille from the front grille with
separating the hinged part by inserting a straight type
screw-driver tip (b).
4. Then, rotate the inlet grille 180 degrees and insert the hooks
into bottom holes of the front grille.
5. Insert the filter and attach the front grille to the cabinet.
B. IF YOU WANT TO PULL OUT THE FILTER
DOWNWARD;
The grille is already designed for that way.
About 1/2"
Over 20"
HEAT
RADIATION
FENCE
AWNING
FOAM
COOLED
AIR
30-60"
Level
1/4 Bubble
(b)
b
(a)
(c)
Page 19
—19—
3.3 WINDOW REQUIREMENTS
NOTE: All supporting parts should be secured to firm wood,
masonry, or metal.
The models of the specific area don't contain
installation kit.
3.3.1 WINDOW REQUIREMENTS
1. This unit is designed for installation in standard double
hung windows with actual opening widths from 29" to 41".
The top and bottom window sashes must open
sufficiently to allow a clear vertical opening of 18" from
the bottom of the upper sash to the window stool.
2. The stool offset (height between the stool and sill) must
be less than 1 1/4".
3.4 INSTALLATION KITS CONTENTS
29" to 41"
18" min
Offset
Less
than 1
1
/4"
Sill
Exterior
Interior wall
26" min.
(Without frame curtain)
Stool
Foam-PE
(Adhesive-Backed)
Foam-PE
(Adhesive-Backed)
Type C (5) Type D (2)
Type A (14)
Carriage Bolt (2) Lock Nut (4)
Top retainer bar
Type B (7)
Foam strip
(Plain-Back)
Right frame
curtain
Window locking
bracket
Left frame
curtain
Frame guide(2)
Sill
bracket
(2)
Support bracket(2)
Page 20
—20—
3.5.1 PREPARATION OF CHASSIS
1. Remove the screws which fasten the cabinet at both sides
and at the back. Keep these two screws which fasten the
cabinet at both sides for later use.
2. Slide the unit out from the cabinet by gripping the base pan
handle and pulling forward while bracing the cabinet.
3. Cut the window sash seal to the proper length. Peel off the
backing and attach the Foam-PE to the underside of the
window sash.
4. Remove the backing from Foam-PE with 3 holes and attach
it to the bottom of the Top retainer bar.
5. Attach the Top retainer bar onto the top of the cabinet with 3
screws (Type A).
6. Insert the Frame guides into the bottom of the cabinet.
7. Insert the Frame Curtain into the Top retainer bar and
Frame guides.
8. Fasten the curtains to the unit with 10 screws (Type A) at
both sides.
SCREWDRIVER(+, -), RULER, KNIFE, HAMMER, PENCIL, LEVEL
Figure 20
Figure 21
Figure 22
Figure 23
3.5 SUGGESTED TOOL REQUIREMENTS
Shipping screws
Foam-PE
Top retainer bar
Screw
(Type A)
Top retainer bar
Foam-PE
Screw(Type A)
Frame guide
Page 21
—21—
3.6 CABINET INSTALLATION
1. Open the window. Mark a line on the center of the window
stool between the side window stop moldings.
Loosely attach the sill bracket to the support bracket using
the carriage bolt and the lock nut.
2. Attach the sill bracket to the window sill using the screws
(Type B).
Carefully place the cabinet on the window stool and align the
center mark on the bottom front with the center line marked
window stool.
3. Using the M-screw and the lock nut, attach the support
bracket to the cabinet track hole. Use the first track hole
after the sill bracket on the outer edge of the window sill.
Tighten the carriage bolt and the lock nut. Be sure the
cabinet slants outward.
CAUTION: Do not drill a hole in the bottom pan. The unit is
designed to operate with approximately 1/2" of
water in bottom pan.
4. Pull the bottom window sash down behind the Top retainer
bar until they meet.
NOTE: 1. Do not pull the window sash down so tightly that the
movement of Frame curtain is restricted. Attach the
cabinet to the window stool by driving the screws
(Type B) through the cabinet into window stool.
2. The cabinet should be installed with a very slight tilt
downward toward the outside.
Support
Bracket
Lock nut
Sill
Bracket
Carriage
Bolt
(M-Screw)
Front angle
Window stool
Window sash
Top retainer bar
Cabinet
Foam-PE
Frame curtain
Screw(Type B)
Front Angle
Sash track
Foam-PE
Cabinet
Track hole
Support
Bracket
Carriage bolt
and lock nut
Machine screw (Type D)
and lock nut
Outer edge
of window
sill
Screw(Type B)
Sill bracket
Top
retainer
bar
Figure 24
Figure 25
Figure 26
Figure 27
Figure 28
Page 22
—22—
5. Pull each Frame curtain fully to each window sash
track, and pull the bottom window sash down behind
the Top retainer bar until it meets.
6. Attach each Frame curtain the window sash by using
screws (Type C). (See Fig. 29)
7. Slide the unit into the cabinet. (See Fig. 30)
CAUTION: For security purpose, reinstall screws (Type
A) at cabinet's sides.
8. Cut the Foam-strip to the proper length and insert
between the upper window sash and the lower
window sash. (See Fig. 31)
9. Attach the Window locking bracket with a screw
(Type C). (See Fig. 32)
10. Attach the front grille to the cabinet by inserting the
tabs on the grille into the tabs on the front of the
cabinet. Push the grille in until it snaps into place.
(See Fig.33)
11. Lift the inlet grille and secure it with a screw (Type A)
through the front grille. (See Fig. 33)
12. Window installation of room air conditioner is now
completed.
Power Cord
Screw (Type A)
Screw
Window locking
bracket
Foam-Strip
Screw(Type C)
Figure 29
Figure 30
Figure 31
Figure 32
Figure 33
Figure 34
Page 23
—23—
4. TROUBLESHOOTING GUIDE
4.1 OUTSIDE DIMENSIONS
675(770)
660
428
CAPILLARY TUBE
COMPRESSOR
BLOWER
EVAPORATOR COIL
CONDENSER COIL
FAN
MOTOR
4.2 PIPING SYSTEM
Following is a brief description of the important components and their functions in the refrigeration system.
Refer to Fig. 35 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 LINE
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
Figure 35
Page 24
—24—
4.3 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 runs but poor cooling
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.
Page 25
—25—
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.
Page 26
—26——26—
COMPLAINT CAUSE REMEDY
Check voltage at outlet. Correct if none.
Check voltage to rotary switch. If none, check
power supply cord. Replace cord if circuit is open.
Check switch continuity. Refer to wiring diagram
for terminal identification. Replace switch if
defective.
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 1/4to 5/16inch 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
Power supply cord
Rotary switch
Wire disconnected or
connection loose
Capacitor (Discharge
capacitor before testing.)
Will not rotate
Revolves on overload.
Grommets
Fan
Blower
Loose set screw
Worn bearings
Fan motor will not run.
Fan motor runs
intermittently
Fan motor noise.
Page 27
—27—
COMPLAINT CAUSE REMEDY
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 for continuity, refer to the wiring diagram
for terminal identification. Replace the switch if
circuit is open.
Check the position of knob If not at the coldest
setting, advance the knob to this setting and
restart unit.
Check continuity of the thermostat. Replace
thermostat if circuit is open.
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.)
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.
Voltage
Wiring
Rotary
Thermostat
Capacitor (Discharge
capacitor before
servicing.)
Compressor
Overload
Voltage
Overload
Fan motor
Condenser air flow
restriction
Condenser fins
(damaged)
Compressor will not run,
but fan motor runs.
Compressor cycles
on overload.
Page 28
—28—
COMPLAINT CAUSE
REMEDY
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.
Set the knob to HIGH COOL or LOW COOL while
rocker switch is ON.
Check terminals. If loose, repair or replace.
Check the synchronous motor for open circuit.
Capacitor
Wiring
Refrigerating system
Air filter
Exhaust damper door
Unit undersized
Blower or fan
Copper tubing
Rotary switch.
Wiring
Synchronous motor.
Compressor cycles
on overload.
Insufficient cooling or
heating
Excessive noise.
Auto air-swing fails.
Page 29
—29—
5. SCHEMATIC DIAGRAM
5.1 CIRCUIT DIAGRAM
• MODEL : R1402
MOTOR
C
C
F
H
7
2
4
6
8
1
L
H
M
THERMOSTAT
BL
RD
BK
BL
BR
RD
BK
BL
BR
OR
YL
COMP.
YL
OR
T/BLOCK
BK
R
S
C
YL WH
ROCKER SWITCH
WH(BR)
1
23
BK(BR)
SYNC
MOTOR
CAPACITOR
BK
RD
BL
BK
RD
BL
BR
OLP
5
1
3
7
6
2
WIRING DIAGRAM 3584AR2206V
4
8
POWER INPUT
BK(BR)
(Plain)
WH(BL)
(Ribbed)
GN(GN/YL)
NO.
1
2
3
4
5
6
7
8
9
Q'TY
PER SET
1
1
1
1
1
1
1
1
1
DESCRIPTION
POWER CORD
ROTARY SWITCH
FAN MOTOR
CAPACITOR
THERMOSTAT
COMPRESSOR
OVERLOAD PROTECTOR
TERMINAL BLOCK
SYNCHRONOUS MOTOR
Page 30
—30—
• MODEL : R1802/R2102/R2402/LWN2432BAG/LWC243NSAB0
1
3
4
7
2
6
5
WIRING DIACRAM
ROCKER SWITCH
WH
WH
SYNC. M.
POWER INPUT
WH(BL)BK(BR)
(Ribbed)
(Plain)
NO.
1
2
3
4
5
6
7
Q'TY
PER SET
1
1
1
1
1
1
1
DESCRIPTION
POWER CORD
ROTARY SWITCH
FAN MOTOR
CAPACITOR
THERMOSTAT
COMPRESSOR
SYNCHRONOUS MOTOR
Page 31
—31—
• MODEL : R1803/R1804/R2103/R2403, LWM1836BAG/BAS/BCG, Y5USC18-6A, Y5USC24-6A, LWN2432BCG
1
3
4
7
2
6
5
WIRING DIACRAM
ROCKER SWITCH
WH(BR)
BK
(BR)
WH
SYNC. M.
POWER INPUT
WH(BL)BK(BR)
(Ribbed)
(Plain)
NO.
1
2
3
4
5
6
7
Q'TY
PER SET
1
1
1
1
1
1
1
DESCRIPTION
POWER CORD
ROTARY SWITCH
FAN MOTOR
CAPACITOR
THERMOSTAT
COMPRESSOR
SYNCHRONOUS MOTOR
Page 32
—32—
• MODEL :R1801H/R1803H
3854AR3563D
WIRING DIAGRAM
COMP
MOTOR
CAPACITOR
ROTARY SWITCH
POWER INPUT
7
(1)
1
(7)
8
6
4
2
F
C
C
H
RD(BL)
BL(RD)
BK
BL(RD)
BK
L
M
OR(BR)
OR(BR)
BK(BR)
SYNC. MOTOR
WH(BR)
ROCKER
SWITCH
THERMOSTAT
WH
BK
YL
BL
RD
RD
YL
C
L
H
1
3
2
R
S
C
BR(YL)
O.L.P
BK
RD
RD
RD
FUSE LINK
BI-METAL
THERMOSTAT
HEATER
BL
BK
RD
BL
BK(BR)
(Plain)
WH(BL)
(Ribbed)
GN(GN/YL)
1
3
4
5
6
8
2
7
9
NO.
1
2
3
4
5
6
7
8
9
Q'TY
PER SET
1
1
1
1
1
1
1
1
1
DESCRIPTION
POWER CORD
ROTARY SWITCH
FAN MOTOR
CAPACITOR
THERMOSTAT
OVERLOAD PROTECTOR
COMPRESSOR
ELECTRIC HEATER
SYNCHRONOUS MOTOR
Page 33
—33—
• MODEL :M1802/M1803R
.
WIRING DIAGRAM
3854A20003J
CN-DISP 2
CN-SYNC
CN-DISP 1
RY-HI
RY-LO
RY-MED
BR
BR
FUSE 250V T2A
34
1
7
6
8
5
9
2
3
4
NO.
1
2
3
4
5
6
7
8
9
Q'TY
PER SET
1
1
1
1
1
1
1
1
1
DESCRIPTION
POWER CORD
FAN MOTOR
CAPACITOR
COMPRESSOR
MAIN PWB ASM
DISPLAY PWB ASM
THERMISTOR ASM
CONNECTOR
FUSE
Page 34
—34—
5.2. ELECTOINC CONTROL DEVICE
• MODEL : M1802
Page 35
—35—
• MODEL : M1803R
NOTE
1. The unit of undefined resistors is
ohm, 1/6W, 5%.
2. The unit of undefined capacitors
is uF.
Page 36
—36—
5.3. COMPONENTS LOCATION (FOR MAIN P.C.B ASM)
• MODEL : M1802
• MODEL : M1803R
CN-TH1
IC01A
6 CN-DISP1
11
CN-DISP2
1
IC02D
C05D
RY-COMP
PWB ASS'Y:
6871A10013
PWB P/NO:
6870A90041A
125V, 2A
250V, T2A
FUSE
C01D
D05D
D04D
D03D
D02D
C03D
IC01D
1
J01
OSC01B
Q01E
CN-BK
CN-BL
CN-RD
ZNR
CO1J
BUZZER
R01J
CN - SYNC
CN - WORK
POWER TRANS
F
M
RY - HIRY - MIDRY - LORY - SYNC
14
J02
J03
J04
G
F
M
Page 37
—37—
5.4. COMPONENTS LOCATION (FOR DISPLAY P.C.B ASM)
• MODEL : M1802
• MODEL : M1803R
PWB P/NO:6870A90004D-3
6871A2011B
Page 38
—38—
6. EXPLODED VIEW
• MODEL: R1402/R1802/R2102/R1801H/M1802/R1803/R1804/R2103/R1803H/M1803R
LWM1836BAG/LWM1836BAS/Y5USC18-6A/LWM1836BCG
152302
135313
147581-1
147581-2
135312
552101
552102
753010
554030
148000
352390
349600
346811
130410
354210
149582
349001
249950249950
359012
349480
W48602
W48602
559010
149980
550140
554160
352115
352113
35211A
352111
263230
268712
146812
264110
268714
237200
238310
W0CZZ
249950
135510
269310
W0CZZ
135510
146812
266003
264110
137215
149410
269310
135510
146812
266003
264110
137215
149410
W0CZZ
130910
753000
Page 39
—39—
A
C
B
352115-1
352113
35211A
352115-2
552102
352113
35211A552111352115
352111
352111
552111
130910
148000
559011
W48602
554031
349600
352390
346811
149980
130410
149582
W48602
349480
152302
135312
249950 554160
135313
147581-2
147581-1
137215
266002
269310
W0CZZ
266003 135510
264110
146812
354210
149410
359012
349001
• MODEL: R2402/R2403/Y5USC24-6A/LWN2432BCG/LWN2432BAG/LWC243NSAB0
Page 40
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7. REPLACEMENT PARTS LIST
PART NO.
DESCRIPTION
REMARK
130410 BASE ASSEMBLY, SINGLE 3041A30002B 3041A30001H R
130910 CABINET ASSEMBLY, SINGLE 3091AR6057A 3091AR6056A R
135312
GRILLE ASSEMBLY, FRONT(SINGLE)
3531A20005C R
135313 GRILLE ASSEMBLY, INLET 3530AR1604A R
135510 COVER ASSEMBLY, CONTROL 3551A30015A R
137215 PANEL ASSEMBLY, CONTROL 3721A20002B R
146812 MOTOR ASSEMBLY, SYNC. 2H01102D 2H01102A R
147581-1 LOUVER, HORIZONTAL 4758AR7264A R
147581-2 LOUVER, HORIZONTAL 4758AR7278A R
147582 LOUVER, VERTICAL 4758AR6157A R
148000 BRACE 4800AR7272A 4800AR7271A R
149410 KNOB ASSEMBLY 4941A30001A R
149980 SHROUD 4998AR1597A R
152302 FILTER(MECH), A/C 5231AR6159A R
249950 CONTROL BOX ASSEMBLY
4995A20005N 4995A20005P 4995A20005P 4995A20057Z 4995A20057Z
264110 POWER CORD ASSEMBLY 2H00677S 2H00677Q R
266003 SWITCH, ROTARY 2H00598E R
269310 THERMOSTAT ASSEMBLY 2H01109L R
346811 MOTOR ASSEMBLY, SINGLE
4681AR6033J
4681AR6033K 4681AR6033M R
349001 DAMPER, VENTILATION 4900AR7265A R
349480 ORIFICE 4948AR7241A R
349600 MOUNT, MOTOR 4960AR1596A R
35211A TUBE ASSEMBLY, SUCTION
5211A30088C 5211A30210A 5211A20204A 5211A20204C 5211A30292A 5211A30292D
R
352111 TUBE ASSEMBLY, CONNECTOR
5211AR7059A
5211AR7059C 5211AR7059H R
352113 TUBE ASSEMBLY, DISCHARGE
5211A30066C 5211A30066A 5211A30066K 5211A30293A 5211A30066L
R
352115 TUBE EVAPORATOR
5210A30009G/H 5210A30144J/K
5210A20351B/52B 5211A20433B/34B
5210A30144A/B 5210A30144J/K
R
352390 AIR GUIDE ASSEMBLY 5239A20001D R
354210
EVAPORATOR ASSEMBLY, FIRST
5421A20017H 5421A20017G 5421A20059A 5421A20059F 5421A20017A
R
359012 FAN ASSEMBLY, BLOWER 5834AR1599A R
550140 ISOLATOR, COMP. 4H00982C 5040A30017A R
552101 TUBE CAPILLARY
3H03750H 3H03750Q 5210A30040N 5210A30040M 5424AR3411P
R
552102 TUBE CAPILLARY BEND - - -
5211A20020P
--R
554030 CONDENSER ASSEMBLY, BENT
5403A20004F
5403A20004F 5403A20004H R
554160 COMPRESSOR
5416A20012A
5416AR20003J 5416A20013E R
559010 FAN ASSEMBLY, AXIAL 5900AR1508A 5900AR1330A R
567502 O.L.P
6750U-L046A
--R
W0CZZ CAPACITOR
6120AR2359Q
6120AR2194D 6120AR2194K R
W48602 CLAMP SPRING 3H02932C R
LOCATION
NO.
R1402 R1802 R1803 R1804 R2102 R2103
R: Service Parts
NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's request.
(GCSC WEBSITE http://biz@LGservice.com)
Page 41
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130410 BASE ASSEMBLY,SINGLE 3041A30002B R
130910 CABINET ASSEMBLY,SINGLE 3091AR6057B R
135303 GRILLE,INLET 3530A10005A 3530A10070A 3530AR1604A R
135312 GRILLE ASSEMBLY,FRONT(SINGLE) 3531A20073H 3531A20073E 3531A20005L 3531A20005A R
135510 COVER ASSEMBLY,CONTROL(SINGLE) 3551A30015A R
137215 PANEL ASSEMBLY,CONTROL 3721A20058E 3721A20002B R
146812 MOTOR ASSEMBLY,SYNC. 2H01102A R
147581-1 LOUVER,HORIZONTAL 4758AR7264A 4758AR7264A 4758AR7264A R
147581-2 LOUVER,HORIZONTAL 4758AR7278A 4758AR7278A 4758AR7278A R
147582 LOUVER,VERTICAL 4758AR6157A R
148000 BRACE 4800AR7272A R
149410 KNOB ASSEMBLY 4941A30001G 4941A30001A R
149980 SHROUD 4998AR1597A R
152302 FILTER ASSEMBLY,A/C 5231AR6159A R
249950 CONTROL BOX ASSEMBLY,SINGLE 4995A20109C 4995A20097P 4995A20097D 4995A20097P R
264110 POWER CORD ASSEMBLY 2H00677Q R
266002 SWITCH,ROCKER 2H01316C R
266003 SWITCH,ROTARY 2H00598E R
269310 THERMOSTAT ASSEMBLY 2H01109L R
346811 MOTOR ASSEMBLY,SINGLE 4681AR6033K R
349001 DAMPER,VENTILATION 4900AR7265A R
349480 ORIFICE 4948A30006A R
349600 MOUNT,MOTOR 4960AR1596A R
352111 TUBE ASSEMBLY,CONNECTOR 5211AR7059A R
352113 TUBE ASSEMBLY,DISCHARGE SINGLE 5211A30066K R
352115 TUBE ASSEMBLY,EVAPORATOR IN 5211A20433B R
352115 TUBE ASSEMBLY,EVAPORATOR IN 5211A20434B R
35211A TUBE ASSEMBLY,SUCTION SINGLE 5211A20204C R
352390 AIR GUIDE ASSEMBLY 5239A20001J R
354210 EVAPORATOR ASSEMBLY,FIRST 5421A20059F R
359012 FAN ASSEMBLY,BLOWER 5834AR1599A R
550140 ISOLATOR,COMP 4H00982C R
552102 TUBE,CAPILLARY BEND 5211A20020P R
554031 CONDENSER ASSEMBLY,BENT 5403A20004F 5403A20004K 5403A20004F R
554160 COMPRESSOR 5416A20003J R
559010 FAN ASSEMBLY,AXIAL 5900AR1508A R
W0CZZ CAPACITOR,DRAWING 6120AR2194D R
W48602 CLAMP,SPRING 3H02932C R
PART NO.
DESCRIPTION
REMARK
LOCATION
NO.
Y5USC18-6A LWM1836BAS LWM1836BAG LWM1836BCG
R: Service Parts
NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's request.
(GCSC WEBSITE http://biz@LGservice.com)
Page 42
130410 BASE ASSEMBLY, SINGLE 3041A30002B 3041A30002B 3041A30001R R
130910 CABINET ASSEMBLY, SINGLE 3091AR6057A 3091AR6057A 3091AR6056B R
135312 GRILLE ASSEMBLY, FRONT (SINGLE) 3531A20005H 3531A20005H 3531A20073E R
135313 GRILLE, INLET 3530AR1603A 3530AR1603A 3530A10070A R
135510 COVER ASSEMBLY, CONTROL 3550AR7245A 3550AR7245A 3551A30015A R
137215 PANEL ASSEMBLY, CONTROL 3721A20002Q 3721A20002Q 3721A10011L R
146812 MOTOR ASSEMBLY, SYNC. 2H01102A 2H01102A 2H01102A R
147581-1 LOUVER, HORIZONTAL 4758AR7264C 4758AR7264C 4758AR7278A R
147581-2 LOUVER, HORIZONTAL 4758AR7278C 4758AR7278C 4758AR7264A R
147582 LOUVER, VERTICAL 4758AR6157A 4758AR6157A 4758AR6157A R
148000 BRACE 4800AR7272A 4800AR7272A 4800AR7271A R
149410 KNOB ASSEMBLY 4941A30001A 4941A30001A 4941A30001A R
149980 SHROUD 4998AR1597A 4998AR1597A 4998AR1602A R
152302 FILTER(MECH), A/C 5231AR6159A 5231AR6159A 5231AR6159A R
249950 CONTROL BOX ASSEMBLY 4995A20051A 4995A20051A 4995A20254C R
264110 POWER CORD ASSEMBLY 2H00677U 2H00677U 6411A20015G R
266002 SWITCH,ROCKER - - 2H01316C R
266003 SWITCH, ROTARY 2H00598F 2H00598F 2H00598E R
269310 THERMOSTAT, ASSEMBLY 2H01127B 2H01127B 2H01109L R
346811 MOTOR ASSEMBLY, SINGLE 4681AR6033B 4681AR6033K 4681A20043A R
349001 DAMPER, VENTILATION 4900AR7265A 4900AR7265A 4900AR7265A R
349480 ORIFICE - - 4948A30006A R
349600 MOUNT, MOTOR 4960AR1596A 4960AR1596A 4960A10006A R
35211A TUBE ASSEMBLY, SUCTION 5211A30065A 5211A20204A 5211A10094A R
352111 TUBE ASSEMBLY, CONNECTOR 5211AR7059C 5211AR7059C 5211AR7059Q R
352113 TUBE ASSEMBLY, DISCHARGE 5211A30066A 5211A30066K 5211A30325C R
352115 TUBE EVAPORATOR 5210A30009C/D 5210A20351B/52B 5210A30144A/B R
352390 AIR GUIDE ASSEMBLY 5239A20001G 5239A20001G 5239A20001J R
354210 EVAPORATOR ASSEMBLY, FIRST 5421A20017B 5421A20059A 5421A20017A R
359012 FAN ASSEMBLY, BLOWER 5834AR1599B 5834AR1599B 5834AR1599B R
550140 ISOLATOR, COMP 4H00982C 4H00982C 5040A30017B R
552101 TUBE CAPILLARY 3H03750S 5210A30040N 5425AR3147X R
552102 TUBE,CAPILLARY BEND - - 5211A30296E R
554031 CONDENSER ASSEMBLY, BENT 5403A20004F 5403A20004F 5403A20032D R
554160 COMPRESSOR 5417AR2256E 5416AR20003J 5416A20013P R
559010 FAN ASSEMBLY, AXIAL 5900AR1508A 5900AR1508A 5900AR1330A R
753000 HEATER, ELECTRIC 5300AR1571B 5300AR1571B - R
753010 HEATER ASSEMBLY, ELECTRIC 5301A30001A 5301A30001A - R
W0CZZ CAPACITOR, DRAWING 6120AR2359E 6120AR2359E 0CZZA20001P R
W48602 CLAMP SPRING 3H02932C 3H02932C 3H02932C R
—42—
PART NO.
DESCRIPTION
REMARK
LOCATION
NO.
R1801H R1803H LWC243NSAB0
R: Service Parts
NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's request.
(GCSC WEBSITE http://biz@LGservice.com)
Page 43
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130410 BASE ASSEMBLY, SINGLE 3041A30002B R
130910 CABINET ASSEMBLY, SINGLE 3091AR6057A R
135312 GRILLE ASSEMBLY, FRONT (SINGLE) 3531A20005C R
135313 GRILLE ASSEMBLY, INLET 3530AR1604A R
135510 COVER ASSEMBLY, CONTROL 3550AR7245A R
249950 PANEL ASSEMBLY, CONTROL 4995A20045W 4995A20100X R
146812 MOTOR ASSEMBLY, SYNC. 2H01102A R
147581-1 LOUVER HORIZONTAL 4758AR7264A R
147581-2 LOUVER HORIZONTAL 4758AR7278A R
147582 LOUVER VERTICAL 4758AR6157A R
148000 BRACE 4800AR7272A R
149980 SHROUD 4998AR1597A R
152302 FILTER(MECH), A/C 5231AR6159A R
237200 PANEL, CONTROL 3720AR6163A R
238310 ESCUTCHEON 3831A10002G R
263230 THERMISTOR ASSEMBLY 2H01109L R
264110 POWER CORD ASSEMBLY 2H00677Q R
268712 PWB(PCB) ASSEMBLY, DISPLAY 2H00598E 6871A20118C R
268714 PWB(PCB) ASSEMBLY, MAIN 2H01316C 6871A10013E R
346811 MOTOR ASSEMBLY, SINGLE 4681AR6033K R
349001 DAMPER, VENTILATION 4900AR7265A R
349480 ORIFICE 4948AR7241A R
349600 MOUNT, MOTOR 4960AR1596A R
35211A TUBE ASSEMBLY, SUCTION 5211A30250A 5211A20204A R
352111 TUBE ASSEMBLY, CONNECTOR 5211AR7059C R
352113 TUBE ASSEMBLY, DISCHARGE 5211A30066A 5211A30066A R
352115 TUBE EVAPORATOR 5210A30144J/K 5210A20351B/52B R
354210 EVAPORATOR ASSEMBLY, FIRST 5421A20017G 5421A20059A R
359012 FAN ASSEMBLY, BLOWER 5834AR1599A R
550140 ISOLATOR, COMP. 4H00982C R
552101 TUBE CAPILLARY 3H03750Q 5210A30040N R
552102 TUBE CAPILLARY BEND - - R
554030 CONDENSER ASSEMBLY, BENT 5403A20004F R
554160 COMPRESSOR 5416AR20003J R
559010 FAN ASSEMBLY, AXIAL 5900AR1508A R
567502 O.L.P - R
W0CZZ CAPACITOR 6120AR2194D R
W48602 CLAMP, SPRING 3H02932C R
PART NO.
DESCRIPTION
REMARK
LOCATION
NO.
M1802 M1803R
R: Service Parts
NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's request.
(GCSC WEBSITE http://biz@LGservice.com)
Page 44
—44—
NOTE) *Please ensure GCSC since these parts may be changed depending upon the buyer's request.
(GCSC WEBSITE http://biz@LGservice.com)
130410 BASE ASSEMBLY, SINGLE 3041A30001R R
130910 CABINET ASSEMBLY, SINGLE 3091AR6056A 3091AR6056B R
135312 GRILLE ASSEMBLY, FRONT (SINGLE) 3531A20005C 3531A20005B 3531A20005A 3531A20005L R
135313 GRILLE ASSEMBLY, INLET 3530AR1604A 3531A20073H 3530AR1604A 3530AR1604A R
135510 COVER ASSEMBLY, CONTROL 3551A30015A R
137215 PANEL ASSEMBLY, CONTROL 3721A20002B 3721A20058E 3721A20002B 3721A20002A R
146812 MOTOR ASSEMBLY, SYNC. 2H01102A R
147581-1 LOUVER HORIZONTAL 4758AR7264A R
147581-2 LOUVER HORIZONTAL 4758AR7278A R
147582 LOUVER, VERTICAL 4758AR6157A R
148000 BRACE 4800AR7271A R
149410 KNOB ASSEMBLY 4941A30001A 4941A30001G 4941A30001A R
149980 SHROUD 4998AR1602A R
152302 FILTER(MECH), A/C 5231AR6159A R
249950 CONTROL BOX ASSEMBLY 4995A20065K 4995A20065V 4995A20065X 4995A20254A R
264110 POWER CORD ASSEMBLY 2H00677U 6411A20015G R
266002 SWITCH, ROCKER - 2H01316C R
266003 SWITCH, ROTARY 2H00598E R
269310 THERMOSTAT ASSEMBLY 2H01109L R
346811 MOTOR ASSEMBLY, SINGLE 4681A20011C 4681A20043A R
349001 DAMPER, VENTILATION 4900AR7265A R
349480 ORIFICE 4948A30006A R
349600 MOUNT, MOTOR 4960AR2895A 4960A10006A R
352111 TUBE ASSEMBLY, CONNECTOR 5211AR7059J 5211AR7059Q 5211AR7059X R
352113 TUBE ASSEMBLY, DISCHARGE 5211A30325A 5211A30325C R
35211A TUBE ASSEMBLY, SUCTION 5211A20159A 5421A10094A R
352115 TUBE EVAPORATOR
5211A20162A/B/C
-R
352390 AIR GUIDE ASSEMBLY 5239A20001J R
354210 EVAPORATOR ASSEMBLY, FIRST 5421A20052A 5421A20017A R
359012 FAN ASSEMBLY, BLOWER 5834AR1599A 5834AR1599B R
552102 TUBE CAPILLARY, BEND - 5211A30296E R
552111 TUBE CAPILLARY 5210A30040N - R
554031 CONDENSER ASSEMBLY, BENT 5403A20032B 5403A20032D R
554160 COMPRESSOR 5416A20013G 5416A20013P R
559010 FAN ASSEMBLY, AXIAL 5900AR1330A R
W0CZZ CAPACITOR 6120AR2194Q 0CZZA20001P R
W48602 CLAMP SPRING 3H02932C R
W52106-1 TUBE, EVAPORATOR - 5210A30144B 5210A30144A 5210A30144B R
W52106-2 TUBE, EVAPORATOR - 5210A30144A R
PART NO.
DESCRIPTION
REMARK
LOCATION
NO.
R2402 R2403 Y5USC24-6A LWN2432BCG LWN2432BAG
R: Service Parts
Page 45
MEMO
—45—
Page 46
—46—
MEMO
Page 47
P/No.: 3828A20140A
January, 2005
Printed in Korea
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