LG LW1200ERY3, LW1200PRY3, LW1000PRY3, LW120CS, LW100CS Service Manual
...
website http://www.lgservice.com
LG
LG Room
Air Conditioner
SERVICE MANUAL
MODEL: LW1200PR
LW1200ER
LW1000PR
LW1000ER
LW1004ER
LWL1210WAL
LWL1230WAL
WM-1231
LW1000ERY3
LB1000ER
LB1200ER
LW100CS
LW120CS
LW1000PRY3
LW1200PRY3
LW1200ERY3
CAUTION
•BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
•ONLY FOR AUTHORIZED SERVICE PERSONNEL.
Air Conditioner Service Manual |
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TABLE OF CONTENTS |
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Safety Precautions.......................................................................................................................................... |
3 |
Dimensions ..................................................................................................................................................... |
5 |
Outside Dimensions ................................................................................................................................... |
5 |
Product Specifications .................................................................................................................................. |
6 |
Installation ....................................................................................................................................................... |
7 |
Select the Best Location ............................................................................................................................ |
7 |
Installation Check ....................................................................................................................................... |
7 |
How to Secure the Drain Pipe .................................................................................................................... |
7 |
How to Install.............................................................................................................................................. |
8 |
Suggested Tool Requirements ................................................................................................................... |
9 |
Operation ...................................................................................................................................................... |
12 |
Function of Controls ................................................................................................................................. |
12 |
Disassembly .................................................................................................................................................. |
15 |
Mechanical Parts...................................................................................................................................... |
15 |
Air handling Parts..................................................................................................................................... |
16 |
Electrical Parts ......................................................................................................................................... |
17 |
Refrigerating Cycle................................................................................................................................... |
19 |
Schematic Diagram....................................................................................................................................... |
22 |
Electronic Control Device. ........................................................................................................................ |
22 |
Wiring Diagram......................................................................................................................................... |
24 |
Components Location .............................................................................................................................. |
25 |
Troubleshooting Guide ................................................................................................................................. |
27 |
Pipeing System ........................................................................................................................................ |
27 |
Troubleshooting Guide ............................................................................................................................. |
28 |
Electrical Parts Troubleshooting Guide .................................................................................................... |
30 |
Electrical Parts ......................................................................................................................................... |
34 |
Exploded View .............................................................................................................................................. |
40 |
Replacement Parts List ................................................................................................................................ |
41 |
2 Room Air Conditioner
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.
WARNING This symbol indicates the possibility of death or serious injury.
CAUTION This symbol indicates the possibility of injury or damage to property only.
■ Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
WARNING
■ Installation
Do not use damaged power cord plugs, or a loose socket.
Always use the power plug and socket with the ground terminal.
• There is risk of fire or electric shock. |
• There is risk of electric shock. |
Service Manual 3
Safety Precautions
Do not modify or extend the power cord.
Do not install, remove, or re-install the unit by yourself(customer).
• There is risk of fire, electric shock, explosion, or injury.
Be cautious when unpacking and installing the product.
Do not store or use flammable gas or combustibles near the air conditioner.
• There is risk of fire or failure of product.
Sharp edges
Gasolin
Be sure the installation area does not deteriorate with age.
•If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.
4 Room Air Conditioner
Dimensions
Dimensions
Symbols
Used
in this Manual
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the air conditioner.
NOTICE This symbol indicates special notes.
Outside
Dimensions
D
W
˚C
TEMP
FAN
MODE TIMER POWER
SPEED
H
Model
Dimension |
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All Models |
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W |
mm(inch) |
600(23 5/8) |
H |
mm(inch) |
380(14 31/32) |
D |
mm(inch) |
567(22 5/16) |
Service Manual 5
Specfications
Product Specifications
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MODELS |
LW1200PR |
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LB1000ER |
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LW1200ER |
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LW1004ER |
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LWL1210WAL |
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LW1000PR |
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LW1200ERY3 |
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LWL1230WAL |
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LW1000ER |
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WM-1231 |
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LW120CS |
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LW1000ERY3 |
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ITEMS |
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LB1200ER |
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LW100CS |
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LW1200PRY3 |
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LW1000PRY3 |
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POWER SUPPLY |
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1ø , 115, 60Hz |
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1ø , 208/230, 60Hz |
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1ø , 115, 60Hz |
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COOLING CAPACITY |
(Btu/h) |
12,300 |
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12,000 |
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10,000 |
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12,000 |
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INPUT |
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(W) |
1,140 |
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1,110 |
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910 |
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1,220 |
RUNNING CURRENT |
(A) |
10.2 |
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5.2 |
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8.2 |
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11.0 |
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E.E.R |
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(BTU/W.h) |
10.8 |
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10.8 |
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11.0 |
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9.8 |
OPERATING |
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INDOOR (°C) |
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26.7(DB)* |
19.4(WB)** |
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CONDITION |
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OUTDOOR (°C) |
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35(DB)* |
23.9(WB)** |
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REFRIGERANT (R-22) CHARGE |
540g (19.0 oz) |
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550g (19.4 oz) |
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480(17.0 oz) |
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470(16.6 oz) |
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EVAPORATOR |
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3 ROW 12 STACKS, SLIT-FIN TYPE |
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2ROW10STACKS,LG-LOUVERTYPE |
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2 ROW 12 STACKS |
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CONDENSER |
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2 ROW 17 STACKS, L-BENDED TYPE |
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2ROW17STACKS,LG-LOUVERTYPE |
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2 ROW17 STACKS |
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FAN, INDOOR |
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TURBO FAN |
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FAN, OUTDOOR |
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PROPELLER TYPE FAN WITH SLINGER RING |
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FAN SPEEDS, FAN/COOLING |
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3/3 |
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FAN MOTOR |
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6 POLES |
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OPERATION CONTROL |
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REMOTE CONTROLLER |
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ROOM TEMP. CONTROL |
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THERMISTOR |
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AIR DIRECTION CONTROL |
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VERTICAL LOUVER (RIGHT & LEFT) |
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HORIZONTAL LOUVER (UP & DOWN) |
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CONSTRUCTION |
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SLIDE IN-OUT CHASSIS |
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PROTECTOR |
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COMPRESSOR |
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OVERLOAD PROTECTOR |
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FAN MOTOR |
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INTERNAL THERMAL PROTECTOR |
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POWER CORD |
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(3 WIRE WITH GROUDING) |
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ATTACHMENT PLUG (CORD-CONNECTED TYPE) |
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DRAIN SYSTEM |
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DRAIN PIPE OR SPLASHED BY FAN SLINGER |
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NET WEIGHT |
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(lbs/kg) |
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79/36 |
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OUTSIDE DIMENSION |
(inch) |
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235/8 x 14 31/32 x 225/16 |
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(W x H x D) |
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(mm) |
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600 x 380 x 560 |
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* DB : Dry Bulb **WB : Wet Bulb
NOTE: Please refer to Label Quality on the product since this specification may be changed for improving performance.
6 Room Air Conditioner
Installation
Installation
Select
the
Best Location
1.To prevent 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.
3.The outside of the cabinet must extend outward for at least 12" and there should be no obstacles, such as a fence or wall, within 20" from the back of the cabinet because it will prevent heat radiation of the condenser. Restriction of outside air will greatly reduce the cooling efficiency of the air conditioner.
CAUTION: All side louvers of the cabinet must remain exposed to the outside of the structure.
COOLED AIR
30"~60"
4.Install the unit a little slanted so the back is slightly lower than the front (about 1/2 "). This will help force con-densed water to the outside.
5.Install the unit from the bottom about 30"~60" above the floor level.
AWNING FENCE
HEAT
RADIATION
ABOUT 1/2"
Over 20"
Figure 1
Installation Check
The setting conditions must be checked prior to initial starting.
The following items are especially important checking points when the installation is finished.
1.Grounding wire (Green or Green and Yellow) is provided in the power cord. The green wire must be grounded.
2.Connect to a single-outlet 15A circuit. (or 20A circuit for Electric Heater Model)
3.To avoid vibration or noise, make sure the air conditioner is installed securely.
4 Avoid placing furniture or draperies in front of the air inlet and outlet.
How
to
Secure
the
Drain
Pipe
In humid weather, excess water may cause the BASE PAN to overflow. To drain |
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the water, remove the DRAIN CAP and secure the DRAIN PIPE to the rear hole |
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of the BASE PAN. Press the drain pipe into the hole by pushing down and away Drain pipe |
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from the fins to avoid injury. |
Drain cap |
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Optional
1.Install the drain pan over the corner of the cabinet where you removed the plug with 4 (or 2) screws.
2.Connect the drain hose to the outlet located at the bottom of the drain pan. You can purchase the drain hose or tubing locally to satisfy your particular needs. (Drain hose is not supplied).
3.Select the most appropriate connection from among the following figures (by considering the hole of the unit) to fit drain pan to your own unit.
CABINET |
SCREW |
DRAIN |
Fig. 1 |
Fig. 2 |
DRAIN HOSE |
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PAN |
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Fig. 3 |
Fig. 4 |
Service Manual 7
Installation
How
to
Install
When Using Gasket
A |
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1 |
A |
2 |
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2 |
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RIGHT SIDE |
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B |
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B |
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H |
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HORIZONTAL |
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3 |
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LINE |
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4 |
D |
E |
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F |
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1. WINDOW (WIDTH-A, HEIGHT-B) |
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4. DETAILS 5.1 x 30 ROUND HEAD WOOD |
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2. GASKET |
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SCREWS |
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3. WALL |
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A |
B |
C |
D |
E |
F |
H |
I |
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625mm |
392mm |
280mm |
30mm |
0~25mm |
OVER 420mm |
5~10mm |
-5~5mm |
(245/8") |
(157/16") |
(111/32") |
(11/16") |
(0~1") |
(OVER 1617/32") |
(3/16"~3/8") |
(-3/16"~3/16") |
When Using Installation Kits
1. Window Requirements
This unit is designed for installation in
standard double hung windows with actual opening widths from 27" to 39".
The top and bottom window sash must open sufficiently to allow a clear vertical opening of 16" from the bottom of the upper sash to the window stool.
2. Installation Kits Contents
27" to 39"
16" min |
Stool |
Offset 1/2" to 11/4"
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Sill |
Interior wall |
Exterior |
235/8" min (Without frame curtain)
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1 |
2 |
3 |
4 |
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5 |
6 |
7 |
8 |
11 |
9 |
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10 |
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13 |
12 |
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NO. |
NAME OF PARTS |
Q'TY |
1 |
FRAME CURTAIN |
2 |
2 |
SILL SUPPORT |
2 |
3 |
BOLT |
2 |
4 |
NUT |
2 |
5 |
SCREW(TYPE A) (10mm(2/5")) |
16 |
6 |
SCREW(TYPE B) D5.1mm(0.2")/16mm(0.63") |
3 |
7 |
SCREW(TYPE C)D4.1mm(0.17")/16mm(0.63") |
5 |
8 |
FOAM-STRIP |
1 |
9 |
FOAM-PE (600mm x 25mm x 2mm) |
1 |
10 |
WINDOW LOCKING BRACKET |
1 |
11 |
FOAM-PE (920mm x 30mm x 2mm) |
1 |
12 |
DRAIN PIPE |
1 |
13 |
FRAME GUIDE |
2 |
■Top retainer bar is in the product package.
8 Room Air Conditioner
Installation
Suggested Tool
Requirements
SCREWDRIVER (+, -), RULER, KNIFE, HAMMER, PENCIL, LEVEL
Preparation of Chassis
1.Remove the screws that fasten the cabinet at both sides and at the back.
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 the top upper guide
Foam PE 
and attach it to the bottom of the Upper Guide 
.
5.Attach the upper guide onto the top of the cabinet with 3 type A screws.
6.Insert the Frame Guides 
into the bottom of the cabinet.
7.Insert the Frame Curtain 
into the upper guide 
and Frame Guides 
.
8.Fasten the curtains to the unit with 4 Type A screws at the both sides.
Shipping
Screws
EPS Material |
9
13
Cabinet Installation
10
1.Open the window. Mark a line on center of the window stool (or desired air conditioner location). Carefully place the cabinet on the window stool and align the center mark on the front angle with the center line marked in the window stool.
2.Pull the bottom window sash down behind the upper guide until it meets.
NOTICE Do not pull the window sash down so tightly that the movement of Frame Curtain 
is restricted.
(Type 9
5
5 |
11 |
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11
5 (Type A)
Upper Guide
Window stool
Front Angle Figure 2
Window Sash |
Upper guide 9 |
Foam-pe 13 
Cabinet
Frame Curtain 1
Foam-pe 10
Figure 3
Service Manual 9
Installation
3.Loosely assemble the sill support using the parts in Figure 4.
4.Select the position that will place the sill support near the outer most point on sill (See Figure 4)
NOTICE Be careful when you install the cabinet (Frame Guides 
are broken easily).
5.Attach the sill support to the cabinet track hole in relation to the selected position using
2 Type A screws in each support (See Figure 5).
6.The cabinet should be installed with a very slight tilt (about 1/2") downward toward the outside
(See Figure 6).
Adjust the bolt and the nut of Sill Support 
for balancing the cabinet.
7.Attach the cabinet to the window stool by
driving the screws 
(Type B) through the front angle into window stool (5/8").
8.Pull each Frame Curtain 
properly to each window sash track, and repeat step 2.
INDOOR |
OUTDOOR |
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Sill Support 2 |
Bolt 3 |
Nut 4 |
Figure 4 |
12 Frame Guide |
5 Screw(Type A) |
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About 1/2" |
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Cabinet |
INDOOR |
OUTDOOR |
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Figure 5 |
Screw(Type B) 6 |
Screw(Type A) 5 |
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About 1/2" |
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Sill support |
2 |
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Sash track |
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Front Angle |
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Sill support |
Screw(Type B) 6 |
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2 |
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Figure 6 |
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9.Attach each Frame Curtain 
to the window sash by using screws 
(Type C).
(See Figure 7)
Type C
7
Figure 7
10 Room Air Conditioner
Installation
10. Slide the unit into the cabinet.(See Fig. 8)
CAUTION: For security purpose, reinstall |
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screws (Type A) at the cabinet's sides. |
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Power cord |
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Screw(Type A) |
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Screw(Type |
Figure 8 |
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11. Cut the Foam-Strip |
to the proper length and insert |
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between the upper and lower window sash. |
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(See Fig. 9) |
Foam-Strip |
8 |
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Figure 9 |
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12. Attach the window Locking Bracket with a type C |
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screw. (See Fig. 10) |
13 |
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Figure 10
13.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. 11)
14.Lift the inlet grille and secure it with a type A screw through the front grille.(See Fig. 12)
Figure 11 |
Figure 12 |
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Figure 13 |
Service Manual 11
Operation
Operation
Function
of
Controls
•Designed for COOLING ONLY.
•Powerful and whispering cooling.
•Slide-in and slide-out chassis for the simple installation and service.
•Low air-intake, top cooled-air discharge.
•Built-in adjustable Thermistor
•Washable one-touch filter
•Compact size
•Reliable and efficient rotary compressor
LW1004ER
6
COOL FAN DRY
FAN |
ENERGY |
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SAVER |
INDOOR DESIRED |
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TIMER |
FAN |
MODE |
TEMP |
POWER |
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SPEED |
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DISPLAY |
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REMOTE CONTROL |
WM-1231, LW1000ERY3, LB1000ER |
LW1200ER/LW1000ER |
Power |
LB1200ER/LW1200ERY3 |
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1 |
6
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Temp |
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Cool |
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F1 LOW |
˚C |
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° F |
F1 LOW |
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2 |
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6 |
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Energy |
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F2 MED |
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F2 MED |
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Fan Speed |
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F3 HIGH |
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Saver |
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F3 HIGH |
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4 |
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Fan |
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DRY |
COOL |
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Timer |
Mode |
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2 |
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5 |
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Dry |
Timer |
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3 |
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TIMER |
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FAN |
ENERGY |
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SAVER |
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MODE |
TIMER |
FAN |
POWER |
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FAN |
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SPEED |
TIMER |
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MODE |
TEMP |
POWER |
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SPEED |
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5 |
4 |
3 |
2 |
1 |
3 |
5 |
4 |
1 |
5 |
4 |
3 |
2 |
1 |
PRECAUTION: The Remote Control unit will not
function properly if bright light strikes the sensor window of the air conditioner or if there are obstacles between the Remote Control unit and the air conditioner.
POWER BUTTON
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.
ROOM TEMPERATURE SETTING BUTTON
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.
OPERATION MODE SELECTION BUTTON
Every time you push this button, it will shift among COOL, ENERGY SAVER, FAN and DRY.
- Energy Saver: If Energy Save mode is selected, the fan stops when the compressor stops cooling.a
Approximately every 3 minutes the fan will turn on and check the room air to determine if cooling is needed.
FAN SPEED SELECTOR
Every time you push this button, it is set as follows.
(Hi [F3] Low [F1] Med [F2] Hi [F3] Low [F1] ...)
ON/OFF TIMER BUTTON
You can set the time when the unit will turn on or turn off automatically by pressing the timer button. If the unit is operating, this button controls the time it will be turned off. If the unit is off state, this button controls the time it will start. Every time you push this button, the remaining time will be set as follows.
-Stopping operation
(1Hour 2Hours 3Hours 4Hours 5Hours 6Hours 7Hours 8Hours 9Hours 10Hours 11Hours 12Hours 0Hour 1Hour 2Hours ... )
-Starting operation
(1Hour 2Hours 3Hours 4Hours 5Hours 6Hours 7Hours 8Hours 9Hours 10Hours 11Hours 12Hours off 1Hour 2Hours ... )
6 REMOCON SIGNAL RECEIVER
12 Room Air Conditioner
Operation
DISPLAY |
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REMOTE CONTROL |
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LW1200PR, LW1000PR, LWL1210WAL, LWL1230WAL, LW100CS, LW120CS
6
COOL FAN DRY HEAT DEFROST
FAN |
ENERGY |
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SAVER |
INDOOR DESIRED |
AIR |
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PURYFIER |
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AUTO |
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RESTART |
TIMER |
FAN |
MODE |
TEMP |
POWER |
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SPEED |
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5 |
4 |
3 |
2 |
1 |
LW1000PRY3, LW1200PRY3
6
7
COOL FAN DRY
FAN |
ENERGY |
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SAVER |
INDOOR DESIRED |
AIR |
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PURIFIER |
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CLEAN |
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4 |
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FILTER |
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FAN |
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AIR |
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8 |
TIMER |
SPEED |
MODE |
PURIFIER |
TEMP |
POWER |
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5 |
5 |
4 |
3 |
7 |
2 |
1 |
AIR
PURIFIER
Air
Purifier Power
1
Temp
2
Fan Speed
Sleep Mode
3
Auto Timer Swing
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.
POWER BUTTON
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.
ROOM TEMPERATURE SETTING BUTTON
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.
OPERATION MODE SELECTION BUTTON
Every time you push this button, it will shift among COOL, ENERGY SAVER, FAN and DRY as follows.
COOL FAN DRY HEAT DEFROST COOL FAN DRY HEAT DEFROST COOL FAN DRY HEAT DEFROST COOL FAN DRY HEAT DEFROST
FAN |
ENERGY |
FAN |
ENERGY |
FAN |
ENERGY |
FAN |
ENERGY |
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SAVER |
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SAVER |
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SAVER |
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SAVER |
INDOOR DESIRED |
AIR |
INDOOR DESIRED |
AIR |
INDOOR DESIRED |
AIR |
INDOOR DESIRED |
AIR |
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PURYFIER |
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PURYFIER |
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PURYFIER |
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PURYFIER |
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AUTO |
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AUTO |
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AUTO |
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AUTO |
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RESTART |
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RESTART |
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RESTART |
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RESTART |
COOL |
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ENERGY SAVER |
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FAN |
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DRY |
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- Energy Saver: If Energy Save mode is selected, 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.
Service Manual 13
Operation
FAN SPEED SELECTOR
Every time you push this button, it is set as follows. (Hi Low Med Hi Low ...)
FAN FAN FAN
FAN |
FAN |
FAN |
INDOOR DESIRED |
INDOOR DESIRED |
INDOOR DESIRED |
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HIGH |
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LOW |
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MID |
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ON/OFF TIMER BUTTON
You can set the time when the unit will turn on or turn off automatically by pressing the timer button. If the unit is operating, this button controls the time it will be turned off. If the unit is off state, this button controls the time it will start. Every time you push this button, the remaining time will be set as follows.
-Stopping operation
(1Hour 2Hours 3Hours 4Hours 5Hours 6Hours 7Hours 8Hours 9Hours 10Hours 11Hours 12Hours 0Hour 1Hour 2Hours ... )
-Starting operation
(1Hour 2Hours 3Hours 4Hours 5Hours 6Hours 7Hours 8Hours 9Hours 10Hours 11Hours 12Hours off 1Hour 2Hours ... )
6 REMOCON SIGNAL RECEIVER
7AIR PURIFIER
•Press the Air Purifier button.
Operation will start when the button is pressed and stop when the button is pressed again.
•Set the fan speed with the remote control. You can select the fan speed in three steps high, low or medium. Each time the button is pressed, the fan speed mode is shifted.
•If you press the only Air Purifier button, only air purifying operates.
Then, fan speed is low. You can select the fan speed in three steps high, low or medium. Each time the button is pressed, the fan speed mode is shifed.
8SLEEP MODE
•Press the sleep mode button to set the time you want the unit to turn off automatically.
•Every time you push this button, the remaining time will be set as follows.
(1Hour 2Hours 3Hours 4Hours 5Hours 6Hours 7Hours 0Hour 1Hour 2Hours
• The temperature setting will be raised by 2˚F in 30 minutes and by 4˚F in 1 hour to prevent overcooling during sleep.
14 Room Air Conditioner
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