LG LW1800PRZ3, LW1500PRY3 User Manual

Room

Air Conditioner

SERVICE MANUAL

MODELS: LW1800PR

LW1800ER LW1800ERZ3 LW1500PR LW1500PRY3 LWP1830WAL LWP1820PDL LWP1820PEL LWC182PLMM0 LWC183PLMD1 LWC212PLMM0 LW1804ER LW1800PRZ3 HBLG1803R

CAUTION

website http://www.lgservice.com

• BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

2 Room Air Conditioner

Air Conditioner Service Manual

TABLE OF CONTENTS

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

Cabinet Installation...................................................................................................................................10

Operation ......................................................................................................................................................12

Function of Controls.................................................................................................................................12

Disassembly..................................................................................................................................................16

Mechanical Parts......................................................................................................................................16

Air Handling Parts ....................................................................................................................................17

Electrical Parts .........................................................................................................................................18

Refrigerating Cycle...................................................................................................................................20

Schematic Diagram.......................................................................................................................................23

Electronic Control Device.........................................................................................................................23

Wiring Diagram.........................................................................................................................................25

Components Location ..............................................................................................................................26

Troubleshooting Guide.................................................................................................................................28

Piping System ..........................................................................................................................................28

Troubleshooting Guide .............................................................................................................................29

Electrical Parts Troubleshooting Guide ....................................................................................................31

Electric Parts............................................................................................................................................35

Exploded View ..............................................................................................................................................41

Replacement Parts List ................................................................................................................................43

Service Manual 3

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions must be followed.

■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.

■ Meanings of symbols used in this manual are as shown below.

WARNING

CAUTION

This symbol indicates the possibility of death or serious injury. This symbol indicates the possibility of injury or damage to properties only.

Be sure not to do.

Be sure to follow the instruction.

WARNING

■ Installation

Do not use damaged power cord plugs, or a loose socket.

• There is risk of fire or electric shock.

Always use the power plug and socket with the ground terminal.

• There is risk of electric shock.

4 Room Air Conditioner

Safety Precautions

Do not modify or extend the power cord.

• There is risk or fire or electric shock.

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.

• Sharp edges could cause injury. Be especially careful

of the case edges and the fins on the condenser and evaporator.

Do not store or use flammable gas or combustibles near the air conditioner.

• There is risk of fire or failure of product.

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.

Sharp edges

Gasolin

Service Manual 5

Dimensions

TIMER POWERMODE

TEMP

FAN

SPEED

F1 LOW F2 MED F3 HIGH

Dry Timer

Fan

Energy Saver

Cool

W mm(inch) 660(25 31/32)

H mm(inch) 428(16

/32)

D mm(inch) 680(26

/32)

Model

Dimension

ALL MODELS

Outside Dimensions

This symbol alerts you to the risk of electric shock.

This symbol alerts you to hazards that could cause harm to the air conditioner.

This symbol indicates special notes.

NOTICE

Symbols Used in this Manual

6 Room Air Conditioner

Specfications

Product Specifications

POWER SUPPLY

CAPACITY (BTU/h) INPUT (W)

COOLING

RUNNING CURRENT (A) E.E.R (BTU/W.h) CAPACITY (BTU/h) INPUT (W)

HEATING

RUNNING CURRENT (A)

E.E.R (BTU/W.h) OPERATING INDOOR (°C) CONDITION OUTDOOR (°C) REFRIGERANT (R-22) CHARGE EVAPORATOR CONDENSER FAN, INDOOR FAN, OUTDOOR FAN SPEEDS, FAN/COOLING/HEATING FAN MOTOR OPERATION CONTROL ROOM TEMP. CONTROL

AIR DIRECTION CONTROL

CONSTRUCTION

PROTECTOR

COMPRESSOR

FAN MOTOR

POWER CORD

DRAIN SYSTEM NET WEIGHT (lbs/kg)

OUTSIDE DIMENSION

(inch)

(W x H x D) (mm)

1ø, 208/230V, 60Hz

1ø, 115V, 60Hz

1ø, 220V, 60Hz

1ø, 208/230V, 60Hz

18,000 15,000 18,000 24,000

17,500/18,000

1,670 1,300 1,930 1,890 2,440

1,620/1,670

7.5 7.8 12 9.0 8.8 11.5 10.8 9.0/8.3

10.8 11.5 9.5 9.8 8.0/7.5 9.7/9.7

- 18,000 -

- 1,930 -

- 9.0 -

- 9.5 -

26.7(DB)* 19.4(WB)** 35(DB)* 23.9(WB)**

800g(28.2 oz)

670g(23.6 oz)

700g(24.7 oz), 1,070g(37.7 oz)

700g(24.7 oz)

730g(25.7 oz)

765g(27oz)

3 ROW 11 STACKS, LOUVER-FIN TYPE

2 ROW 11 STACKS, LOUVER-FIN TYPE

3 ROW 11 STACKS, LOUVER-FIN TYPE

2 ROW 19 STACKS, L-BENDED TYPE

2 ROW 16 STACKS, L-BENDED TYPE

2 ROW 19 STACKS, L-BENDED TYPE

TURBO FAN

PROPELLER TYPE FAN WITH SLINGER RING

3/3 3/3, 2/2/2 3/3

6 POLES

REMOTE CONTROLLER

THERMISTOR

VERTICAL LOUVER (RIGHT & LEFT)

HORIZONTAL LOUVER (UP & DOWN)

SLIDE IN-OUT CHASSIS

OVERLOAD PROTECTOR

INTERNAL THERMAL PROTECTOR

3 WIRE WITH GROUDING

ATTACHMENT PLUG (CORD-CONNECTED TYPE)

DRAIN PIPE OR SPLASHED BY FAN SLINGER

115/52 110/50 115/52

25 31/32 X 1627/32 X 26 27/32

660 X 428 X 680

LW1800PR LW1800ER

LW1800ERZ3 LW1800PRZ3

LWP1830WAL

LW1500PR

LW1500PRY3

LWP1820PDL LWP1820PEL

LWC182PLMM0 LWC212PLMM0

LW1804ER

LWC183PLMD1

HBLG1803R

MODELS

ITEMS

* DB : dry bulb ** WB : wet bulb

NOTE : Please refer to label quality on the product since this specification may be changed for improving performance.

Service Manual 7

Installation

Select the Best Location

Installation Check

How to Secure the Drain Pipe

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.

The setting conditions must be checked prior to initial starting. The following items are especially important check 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.

In humid weather, excess water may cause the BASE PAN to overflow. To drain the water, remove the DRAIN CAP and secure the DRAIN PIPE to the rear hole of the BASE PAN. Press the drain pipe into the hole by pushing down and away from the fins to avoid injury.

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.

About 1/2"

Over 20"

HEAT

RADIATION

FENCE

AWNING

FOAM

COOLED

AIR

30-60"

Level

1/4 Bubble

Drain pipe

Drain cap

Fig. 4

Fig. 3

Fig. 2

DRAIN PAN

DRAIN HOSE

Fig. 1

CABINET

SCREW

Figure 1

8 Room Air Conditioner

Installation

How to Install

When Using Installation Kits

1. Window Requirements

This unit is designed for installation in standard double hung windows with actual opening widths from 29" to 41". 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

29" to 41"

18" min

Stool

Interior wall

26" min

(Without frame curtain)

Offset Less 1

/4"

Sill

Exterior

■

Top retainer bar is in product package.

Left frame curtain

Window locking bracket

Sill

bracket

(2)

Foam-PE (Adhesive-Backed)

Support bracket(2)

Foam strip (Plain-Back)

Foam-PE (Adhesive-Backed)

Drain pipe

Right frame curtain

Type A (14)

Type B (7)

Type C (5) Type D (2)

Carriage Bolt (2) Lock Nut (4)

Service Manual 9

Suggested tool Requirements

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-Seal 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

DEFROST

HEAT

COOL

Figure 2

Figure 3

Figure 4

Figure 5

Shipping Screws

Foam-Seal

Top retainer bar

Screw

(Type A)

Top retainer bar

Foam-PE

Frame guide

Screw

(Type A)

10 Room Air Conditioner

Installation

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.

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.

NOTICE

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 5

Figure 6

Figure 7

Figure 8

Figure 9

Service Manual 11

Installation

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. 10)

7. Slide the unit into the cabinet. (See Fig. 11)

8. Cut the Foam-strip to the proper length and insert between the upper window sash and the lower window sash. (See Fig. 12)

9. Attach the Window locking bracket with a screw (Type C). (See Fig. 13)

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.14)

11. Lift the inlet grille and secure it with a screw (Type A)

through the front grille. (See Fig. 14)

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 10

Figure 11

Figure 12

Figure 13

Figure 14

CAUTION: For security purpose,

reinstall screws (Type A) at cabinet's

sides.

12 Room Air Conditioner

Operation

• Designed for COOLING ONLY.

• Powerful and quiet cooling.

• Slide-in and slide-out chassis for the simple instal-

lation and service.

• Low air-intake, top cooled-air discharge.

• Built-in adjustable Thermistor

• Washable one-touch filter

• Compact size

• Equipped with reliable and efficient rotary

compressor.

Operation

Function of Controls

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.

REMOTE CONTROL

DISPLAY

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.

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.

COOL

ENERGY SAVER

FAN DRY

AIR

PURYFIER

ENERGY

SAVER

FAN DRY HEAT

DEFROST

COOL

INDOOR DESIRED

FAN

AUTO

RESTART

COOL

AIR

PURYFIER

FAN DRY HEAT

DEFROST

INDOOR DESIRED

FAN

ENERGY

SAVER

AUTO

RESTART

ENERGY

SAVER

COOL

AIR

PURYFIER

DRY HEAT

DEFROST

INDOOR DESIRED

FAN

AUTO

RESTART

FAN

ENERGY

SAVER

COOL

AIR

PURYFIER

HEAT

DEFROST

INDOOR DESIRED

FAN

DRY

AUTO

RESTART

LW1800PR, LW1500PR, LWP1830WAL, LW1804ER

DEFROST

FAN

SPEED

DRY

HEAT

ENERGY

SAVER

AIR

PURYFIER

AUTO

RESTART

COOL

INDOOR DESIRED

TIMER MODE TEMP

POWER

12345

LW1500PRY3, LW1800PRZ3

COOL

INDOOR DESIRED

TIMER MODE

FAN

SPEED

DRY

7 1

ENERGY

SAVER

AIR

PURIFIER

CLEAN FILTER

AIR

PURIFIER

TEMP

POWER

127345

4 8 5

AIR

PURIFIER

Air

Power

Purifier

Temp

Fan Speed

Sleep Mode

Swing

Timer

Auto

Service Manual 13

Operation

FAN SPEED SELECTOR

Every time you push this button, it is set as follows. (Hi ➔ Low ➔ Med ➔ Hi ➔ Low ➔...)

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 ➔ ... )

REMOCON SIGNAL RECEIVER AIR 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.

SLEEP 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.

HIGH LOW MED

COOL

AIR

PURYFIER

ENERGY

SAVER

DRY HEAT

DEFROST

INDOOR DESIRED

FAN

AUTO

RESTART

COOL

AIR

PURYFIER

ENERGY

SAVER

DRY HEAT

DEFROST

INDOOR DESIRED

FAN

AUTO

RESTART

COOL

AIR

PURYFIER

ENERGY

SAVER

DRY HEAT

DEFROST

INDOOR DESIRED

FAN

AUTO

RESTART

14 Room Air Conditioner

REMOTE CONTROL

DISPLAY

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

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.

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

- 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 ➔ ... )

REMOCON SIGNAL RECEIVER AUTO SWING

This button can automatically control the air flow direction.

Operation

LW1800ER

°F

F1 LOW F2 MED F3 HIGH

COOLDRY

FANTIMER

ENERGY

SAVER

FAN

TIMER MODE TEMP

SPEED

LWC182PLMM0, LWC212PLMM0

POWER

12345

7 6

Power

Temp

Fan Speed

Timer Mode

2 4

Temp

Fan Speed

Timer Mode

Auto

Swing

Power

2 4

3 7

LW1800ERZ3, HBLG1803R

Cool

Energy

Saver

Fan Dry Timer

F1 LOW F2 MED F3 HIGH

TEMP

˚F

13 45

Service Manual 15

POWER BUTTON

Operation starts, when this button is pressed and stops when you press the button again.

ROOM TEMPERATURE SETTING BUTTON

Control the room temperature within a range of 16°C to 30°C. The room temperature will be adjusted by 1˚C 30min., and by 2˚C 1 hour later.

OPERATION MODE SELECTION BUTTON

Select Cooling, Heating, or Fan mode with this button.

FAN SPEED SELECTOR

Select the fan speed. Cooling Model: 3 steps {High[F3] ➔ Low[F1] ➔ Med[F2]➔ High[F3]... }

Heating Model: 2 steps {High [F2] ➔ Low[F1] ➔ High[F2]... }

ON/OFF TIMER BUTTON

Set the time of starting and stopping operation. The timer is set by 1 hour.

SIGNAL RECEIVER AUTO SWING

The vertical louver swings horizontally by the automatic system and stops when you press the button again.

REMOTE CONTROL

DISPLAY

■ LWP1820PDL/PEL

Operation

4 5

3 2

2 4

3 7

4 5

+ 35 hidden pages