LG LWJ0561ACG Service Manual ▷ View online
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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.
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 FEATURES
• DESIGNED FOR COOLING ONLY
• POWERFUL AND INCREDIBLE COOLING
• TOP-DOWN CHASSIS FOR THE SIMPLE INSTALLATION AND SERVICE
• BUILT-IN ADJUSTABLE THERMOSTAT
• WASHABLE ONE-TOUCH FILTER
• COMPACT SIZE
• POWERFUL AND INCREDIBLE COOLING
• TOP-DOWN CHASSIS FOR THE SIMPLE INSTALLATION AND SERVICE
• BUILT-IN ADJUSTABLE THERMOSTAT
• WASHABLE ONE-TOUCH FILTER
• COMPACT SIZE
1.2 SPECIFICATIONS
• NOTE: Specifications are subject to minor change without notice for further improvement.
MODELS
ITEMS
COOLING CAPACITY (BTU/h)
5,000
POWER SUPPLY (Phase, V, Hz)
1Ø, 220-240V, 50HZ
INPUT (W)
625
OPERATING CURRENT (AMP.)
2.8
REFRIGERANT CONTROL
CAPILLARY TUBE
REFRIGERANT CHARGE (R-22)
200g
INSIDE FAN
TURBO
OUTSIDE FAN
PROPELLER FAN WITH SLINGER RING
AIR DISCHARGE
2-WAY (RIGHT AND LEFT)
CHASSIS
TOP-DOWN
PROTECTOR
TEMPERATURE CONTROL
THERMOSTAT
ROTARY SWITCH
5 STEP (LOW FAN, HIGH FAN, OFF, HIGH COOL, LOW COOL)
FAN MOTOR
4 POLES, 18W
• OVERLOAD PROTECTOR FOR COMPRESSOR
• INTERNAL PROTECTOR FOR FAN MOTOR
• INTERNAL PROTECTOR FOR FAN MOTOR
LWJ0561ACG
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1.3 LOCATIONS OF CONTROLS
1.4 SAFETY PRECAUTIONS
1. When servicing, set the ROTARY SWITCH to
Off ( 0 ) 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 cir-
cuit.
have been overheated or damaged by the short cir-
cuit.
3. After servicing, make an insulation resistance test
to prevent the customer from being exposed to
shock hazards.
shock hazards.
1.5 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 and yel-
low) 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 position
[except Off ( 0 )] of the ROTARY SWITCH.
metallic part on the equipment at all position
[except Off ( 0 )] of the ROTARY SWITCH.
4. The value should be over 1 M
Ω
.
CAUTION : After switching the air conditioner from Cool to Off ( 0 ) or Fan, wait at least 3 minutes before
switching it back to Cool.
Off
(
) : Turns air conditioner off.
High Fan
(
) : High speed fan operation with-
out cooling.
Low Fan
(
) : Low speed fan operation with-
out cooling.
High Cool (
) : Cooling with high speed fan
operation.
Low Cool (
) : Cooling with low speed fan
operation.
This automatically controls the temperature of the
indoor air.
Turn the knob so that the arrow points to the
larger marks for greater cooling. Point the arrow to
the smaller marks for more moderate cooling.
(i.e. the higher the number, the greater the
cooling)
indoor air.
Turn the knob so that the arrow points to the
larger marks for greater cooling. Point the arrow to
the smaller marks for more moderate cooling.
(i.e. the higher the number, the greater the
cooling)
Operation
High
Fan
Low
Fan
High
Cool
Cool
Off
Low
Cool
Thermostat
1
2
3
4
5
6
7
8
9
Thermostat
1
2
3
4
5
6
7
8
9
COOLER
Operation
0
FA
N
COO
L
0
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2. DISASSEMBLY INSTRUCTIONS
2.1 MECHANICAL PARTS
2.1.1 FRONT GRILLE
1. Disconnect the unit from the power source.
2. Remove the two knobs by pulling them off.
2. Remove the two knobs by pulling them off.
Using a screwdriver, remove the screw that
secures the front grille to control board.
(See Figure 1)
secures the front grille to control board.
(See Figure 1)
3. Push the front grille up from the bottom.
Pull the top of the front grille away from the
cabinet as the top tabs lift out of their slots.
(See Figure 2)
cabinet as the top tabs lift out of their slots.
(See Figure 2)
4. Replace the grille by placing the tabs in the slots
and push the grille until it snaps into place.
2.1.2 CABINET
1. Disconnect the unit from the power source.
2. Remove the front grille. (Refer to Section 2.1.1)
3. Remove 9 screws that secure the cabinet to the
2. Remove the front grille. (Refer to Section 2.1.1)
3. Remove 9 screws that secure the cabinet to the
base and condenser. (See Figure 3)
4. Lift the cabinet from the unit.
5. Re-install by referring to the procedures above.
5. Re-install by referring to the procedures above.
2.1.3 CONTROL BOARD
1. Disconnect the unit from the power source.
2. Remove the front grille. (Refer to Section 2.1.1)
3. Remove the cabinet. (Refer to Section 2.1.2)
4. Remove 2 screws that secure the control board to
2. Remove the front grille. (Refer to Section 2.1.1)
3. Remove the cabinet. (Refer to Section 2.1.2)
4. Remove 2 screws that secure the control board to
base pan and air guide. (See Figure 4)
5. Pull the control board toward yourself.
6. Disconnect one housing terminal and 3 wires for
the fan motor and compressor. (See Figure 5)
7. Re-install components by referring to procedures
above. (Refer to wiring diagram on page 19 in this
manual or inside control board.)
manual or inside control board.)
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
NOTE : Controls, wires, and capacitor are now
accessible for servicing. Discharge the
capacitor before servicing.
(Refer to section 2.3.3)
capacitor before servicing.
(Refer to section 2.3.3)
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2.2 AIR HANDLING PARTS
2.2.1 AIR GUIDE UPPER
1. Disconnect the unit from the power source.
2. Remove the front grille. (Refer to Section 2.1.1)
3. Remove the cabinet. (Refer to Section 2.1.2)
4. Remove the control board.
2. Remove the front grille. (Refer to Section 2.1.1)
3. Remove the cabinet. (Refer to Section 2.1.2)
4. Remove the control board.
(Refer to Section 2.1.3)
5. Remove 2 screws that secure the brace to air
guide upper and shroud. (See Figure 6)
6. Remove 2 screws that secure the air guide upper
to air guide lower. (See Figure 6)
7. Lift air guide upper upward.
8. Re-install by referring to the procedures above.
8. Re-install by referring to the procedures above.
2.2.2 ORIFICE, TURBO FAN AND FAN
1. Disconnect the unit from the power source.
2. Remove the front grille. (Refer to Section 2.1.1)
3. Remove the cabinet. (Refer to Section 2.1.2)
4. Remove the control board.
2. Remove the front grille. (Refer to Section 2.1.1)
3. Remove the cabinet. (Refer to Section 2.1.2)
4. Remove the control board.
(Refer to Section 2.1.3)
5. Remove the air guide upper.
(Refer to Section 2.2.1)
6. Remove 2 screws that secure the base pan to
condenser. (See Figure 7)
7. Remove 2 screws that secures the shroud to
channel of condenser.
8. Press the snap area of shroud with your thumbs.
This allows you to remove it from the condenser.
9. Lift the compressor upward with the evaporator
and condenser. (See Figure 7)
10. Remove the orifice by pushing the snap area of
the air guide blower. (See Figure 8)
11. Remove the clamp springs which are clamped to
the boss of fan and turbo fan by hand plier. (See
Figure 9)
Figure 9)
12. Pull the fan and turbo fan outward.
13. Remove the shroud.
14. Re-install by referring to the procedures above.
13. Remove the shroud.
14. Re-install by referring to the procedures above.
Figure 6
Figure 7
Figure 8
Figure 9
