LG LWC101GGMK1 User manual

Room Air Conditioner
SVC MANUAL(Exploded View)
MODEL : LWC101GGMK1
LWC101GGMK0
LWC081GSMK1
LWC081GSMK0
LWC081GGMK0
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
Internal Use Only
http://biz.lgservice.com

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Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
1. PREFACE
1.1 SAFETY PRECAUTIONS................................2
1.2 INSULATION RESISTANCE TEST.................2
1.3 SPECIFICATIONS...........................................3
1.4 FEATURES......................................................4
1.5 CONTROL LOCATIONS .................................4
2. DISASSEMBLY INSTRUCTIONS
2.1 MECHANICAL PARTS....................................6
2.1.1 FRONT GRILLE .....................................6
2.1.2 CABINET................................................6
2.1.3 CONTROL BOX .....................................6
2.2 AIR HANDLING PARTS..................................7
2.2.1 AIR GUIDE AND BLOWER....................7
2.2.2 FAN AND SHROUD ...............................7
2.3 ELECTRICAL PARTS......................................8
2.3.1 OVERLOAD PROTECTOR....................8
2.3.2 COMPRESSOR......................................8
2.3.3 CAPACITOR...........................................8
2.3.4 POWER CORD ......................................9
2.3.5 ROTARY SWITCH .................................9
2.3.6 MOTOR ..................................................9
2.4 REFRIGERATION CYCLE............................10
2.4.1 CONDENSER.......................................10
2.4.2 EVAPORATOR.....................................10
2.4.3 CAPILLARY TUBE...............................10
3. INSTALLATION
3.1 SELECT THE BEST LOCATION...................13
3.2 CHECK OF INSTALLATION..........................13
3.3 HOW TO DRAIN............................................13
3.4 HOW TO INSTALL ........................................14
3.5 HOW TO USE THE REVERSIBLE INLET GRILLE
...18
4. TROUBLESHOOTING GUIDE
4.1 OUTSIDE DIMENSIONS...............................19
4.2 PIPING SYSTEM...........................................19
4.3 TROUBLESHOOTING GUIDE......................20
5. SCHEMATIC DIAGRAM
5.1 CIRCUIT DIAGRAM ......................................29
5.2 ELECTRONIC CONTROL DEVICE...............30
5.3 COMPONENTS LOCATION
(OF MAIN P.C.B ASSEMBLY).......................31
5.4 COMPONENTS LOCATION
(OF DISPLAY P.C.B ASSEMBLY) ................31
6. EXPLODED VIEW..................................32
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 resis-
tance 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) 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 mode (except
OFF).
4. The value should be over 1MΩ.
CONTENTS

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Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
POWER SUPPLY
COOLING CAPACITY (Btu/h)
INPUT (W)
RUNNING CURRENT (A)
E.E.R (BTU/W.h)
INDOOR (°C)
OUTDOOR (°C)
REFRIGERANT (R-22) CHARGE
FAN, INDOOR
FAN, OUTDOOR
FAN SPEEDS, FAN/COOLING
FAN MOTOR
OPERATION CONTROL
ROOM TEMP. CONTROL
AIR DIRECTION CONTROL
CONSTRUCTION
PROTECTOR COMPRESSOR
FAN MOTOR
OUTSIDE DIMENSION
(inch)
(W x H x D) (mm)
1ø, 115, 60Hz / 1ø, 220, 60Hz
8,000 7,800 10,000
820 720 1,020
7.6 6.6 9.2
9.8 10.8 9.8
26.7(DB)* 19.4(WB)**
35(DB)* 23.9(WB)**
260g(9.2 oz) 445g(15.7 oz) 460g (16.2 oz) 440g(15.5oz) 440g(15.5 oz)
BLOWER or TURBO FAN
PROPELLER TYPE FAN WITH SLINGER-RING
3/3
6 POLES
TOUCH & REMOTE CONTROL
THERMISTOR
VERTICAL LOUVER (RIGHT & LEFT)
HORIZONTAL LOUVER (UP & DOWN)
SLIDE IN-OUT CHASSIS
OVERLOAD PROTECTOR
INTERNAL THERMAL PROTECTOR
181/2x 137/8 x 2011/16 235/8x 1431/32 x 225/16
470 x 353 x 525 600 x 380 x 567
MODELS
ITEMS
OPERATING
CONDITION
1.3 SPECIFICATIONS
* DB:Dry Bulb
** WB:Wet Bulb
NOTE : Specifications are subject to minor change without notice for further improvement.
M1003RA3 M1003RY3 WG1000R
LWC101GGMK1
KG8000RY3
LWC081GGMK0 M8003ER BG8000ER

1.4 FEATURES
• Designed for COOLING ONLY.
• Powerful and whispering cooling.
• Slide-in and slide-out chassis for the simple
installation and service.
• Side air-intake, side cooled-air discharge.
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 OPEN position.
The damper is opened and room air is exhausted.
• Washable one-touch filter
• Compact size
• Reliable and efficient rotary compressor is equipped.
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Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
CLOSE VENT OPEN
1.5.2 COOLING ONLY MODEL WITH REMOTE CONTROL AND TOUCH TYPE
•DISPLAY
1
5
23 7
6 4
8
1
7
8
264 5
3

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Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Power
Temp
Fan Speed
Timer Mode
Energy
Saver Auto Swing
POWER
• To turn the air conditioner ON, push the button. To turn the air conditioner OFF,
push the button again.
• This button takes priority over any other buttons.
• When you first turn it on, the air conditioner is on the High cool mode and the
temp. at 72°F(22˚C).
TEMPERATURE SETTING
• This button can automatically control the temperature of the room.
The temperature can be set within a range of 60°F to 86°F by 1°F.
(16˚C to 30˚C by 1˚C)
Select the lower number for lower temperature of the room.
FAN SPEED
• Everytime you push this button it is set as follows. {High(F3) → Low(F1) →
Med(F2) → High(F3)...}.
ENERGY SAVER (AVAILABLE IN SOME MODELS)
• If the switch is set to "On", 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.
MODE
• Everytime you push this button, it will toggle between COOL, FAN and DRY.
ON/OFF TIMER
- STOPPING OPERATION
• Everytime you push this button, when the air conditioner is operating, timer is set
as follows. (1Hour →2Hours →3Hours →4Hours →5Hours →6Hours →7Hours
→8Hours →9Hours →10Hours →11Hours →12Hours →Cancel)
• The Setting Temperature will be raised by 2°F (1°C) 30min. later and by
2°F (1°C) after another 30 min.
- STARTING OPERATION
• Everytime you push this button, when the air conditioner is not operating, timer is
set as follow. (1Hour →2Hours →3Hours →4Hours →5Hours →6Hours →
7Hours →8Hours →9Hours →10Hours →11Hours →12Hours →Cancel)
AUTO SWING
• This button can automatically control the air flow direction.
REMOCON SIGNAL RECEIVER
•REMOTE CONTROLLER
Precaution: The Remote Controller will not function properly if strong light strikes the sensor window of the air
conditioner or if there are obstacles between the Remote Controller and the air conditioner.
6
6
7
7
8
8
AUTO RESTART
In failure of electric power, the unit runs as previous setting operation. (Available in some models)