HBLG1803R Room Air Conditioner Owner’s Manual

: July 27, 2024
: LG

Table of Contents

HBLG1803R Room Air Conditioner
Product Specifications
Product Usage Instructions
Safety Precautions
Installation
Dimensions
- Frequently Asked Questions (FAQ)
Q: What should I do if the air conditioner stops cooling?
Q: Can I use an extension cord with the air conditioner?
Q: How often should I clean the air filters?

HBLG1803R Room Air Conditioner

Product Specifications

Power Supply: 120V / 60Hz

Capacity: 18,000 BTU/h

Input: 1,500W

Cooling Running Current: 12.5A

Product Usage Instructions

Safety Precautions

Before operating the air conditioner, please read and follow all
safety precautions provided in the user manual to prevent injury or
damage.

Installation

Ensure the power cord and plug are not damaged before use.
Always use a power plug and socket with a ground terminal.
Do not attempt to install, remove, or re-install the unit by
yourself; seek professional assistance.
When unpacking and installing the product, handle with care to
avoid any damage.
Avoid storing or using flammable gases or combustibles near the
air conditioner.
Check that the installation area is free from sharp edges and
does not deteriorate with age.

Dimensions

The outside dimensions of the air conditioner are as
follows:

Width (W): 660mm (25 31/32 inches)
Height (H): 428mm (16 27/32 inches)
Depth (D): 680mm (26 27/32 inches)

Frequently Asked Questions (FAQ)

Q: What should I do if the air conditioner stops cooling?

A: Check if the air filter is clean and not
blocked. Also, ensure that the temperature settings are correct and
that there are no obstructions around the unit that could impede
airflow.

Q: Can I use an extension cord with the air conditioner?

A: It is not recommended to use an extension
cord with the air conditioner as it may lead to power issues or
overheating. Always plug the unit directly into a wall outlet.

Q: How often should I clean the air filters?

A: It is advisable to clean the air filters at
least once a month to maintain efficient operation and airflow.
Refer to the user manual for detailed instructions on filter
cleaning.

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LG Room Air Conditioner
SERVICE MANUAL
MODELS: LW1800PR LW1800ER LW1800ERZ3 LW1500PR LW1500PRY3 LWP1830WAL LWP1820PDL LWP1820PEL LWC182PLMM0 LWC183PLMD1 LWC212PLMM0 LW1804ER LW1800PRZ3 HBLG1803R
CAUTION
· BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
· ONLY FOR AUTHORIZED SERVICE PERSONNEL.

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
2 Room Air Conditioner

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 properties only.
Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.

Installation

WARNING

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. · 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.

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

· Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator.
Sharp edges

· There is risk of fire or failure of product.

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
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.

Dimensions

Outside Dimensions
D

W

Cool Energy
Saver

F1 LOW

‘F

F2 MED

F3 HIGH

Fan

Dry

Timer

TEMP

MODE

TIMER

FAN SPEED

POWER

H

Dimension W H D

Model
mm(inch) mm(inch) mm(inch)

ALL MODELS
660(25 31/32) 428(16 27/32) 680(26 27/32)

Service Manual 5

Specfications

Product Specifications

ITEMS

MODELS

LW1800PR

LW1800ER LW1800ERZ3

LWP1830WAL

LW1500PR LW1500PRY3

LWP1820PDL LWP1820PEL

LWC182PLMM0

LWC212PLMM0

LW1804ER LWC183PLMD1

HBLG1803R

LW1800PRZ3

POWER SUPPLY

1ø, 208/230V, 60Hz 1ø, 115V, 60Hz

1ø, 220V, 60Hz

1ø, 220V, 60Hz 1ø, 208/230V, 60Hz

CAPACITY

(BTU/h)

18,000

15,000

18,000

24,000

17,500/18,000

INPUT

(W)

COOLING RUNNING CURRENT (A)

1,670

7.5

7.8

1,300 12

1,930 9.0

1,890 8.8

2,440 11.5

1,620/1,670 10.8 9.0/8.3

E.E.R

(BTU/W.h)

10.8

11.5

9.5

9.8

8.0/7.5 9.7/9.7

CAPACITY

(BTU/h)

–

18,000

–

INPUT

(W)

–

1,930

–

HEATING

RUNNING CURRENT (A)

–

9.0

–

E.E.R

(BTU/W.h)

–

9.5

–

OPERATING

INDOOR (°C)

26.7(DB)* 19.4(WB)**

CONDITION

OUTDOOR (°C)

35(DB)* 23.9(WB)**

REFRIGERANT (R-22) CHARGE

800g(28.2 oz) 670g(23.6 oz) 700g(24.7oz),1,070g(37.7oz) 700g(24.7 oz) 730g(25.7 oz) 765g(27oz)

EVAPORATOR

3 ROW 11 STACKS, LOUVER-FIN TYPE 2 ROW 11 STACKS, LOUVER-FIN TYPE 3 ROW 11 STACKS, LOUVER-FIN TYPE

CONDENSER

2 ROW 19 STACKS, L-BENDED TYPE 2ROW16STACKS,L-BENDEDTYPE 2 ROW 19 STACKS, L-BENDED TYPE

FAN, INDOOR

TURBO FAN

FAN, OUTDOOR

PROPELLER TYPE FAN WITH SLINGER RING

FAN SPEEDS, FAN/COOLING/HEATING

3/3

3/3, 2/2/2

3/3

FAN MOTOR

6 POLES

OPERATION CONTROL

REMOTE CONTROLLER

ROOM TEMP. CONTROL

THERMISTOR

AIR DIRECTION CONTROL

CONSTRUCTION PROTECTOR

COMPRESSOR FAN MOTOR

VERTICAL LOUVER (RIGHT & LEFT) HORIZONTAL LOUVER (UP & DOWN)
SLIDE IN-OUT CHASSIS OVERLOAD PROTECTOR INTERNAL THERMAL PROTECTOR

POWER CORD
DRAIN SYSTEM NET WEIGHT

(lbs/kg)

115/52

3 WIRE WITH GROUDING

ATTACHMENT PLUG (CORD-CONNECTED TYPE)

DRAIN PIPE OR SPLASHED BY FAN SLINGER

110/50

115/52

OUTSIDE DIMENSION (W x H x D)

(inch) (mm)

25 31/32 X 16 27/32 X 26 27/32 660 X 428 X 680

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

Select the Best Location

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.

FOAM
COOLED AIR

30-60″

1/4 Bubble

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 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.

How to Secure the Drain Pipe

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.

Drain pipe

Drain cap

Optional

CABINET

SCREW

1. Install the drain pan over the corner of the cabinet where you removed

the plug with 4 (or 2) screws.

Fig. 1

Fig. 2

2. Connect the drain hose to the outlet located at the bottom of the drain

DRAIN PAN

DRAIN HOSE

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

Fig. 3

Fig. 4

(by considering the hole of the unit) to fit drain pan to your own unit.

Service Manual 7

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
Foam-PE (Adhesive-Backed)

29″ to 41″ 18″ min Stool
Interior wall 26″ min
(Without frame curtain)

Offset Less 11/4″
Sill Exterior

Foam strip (Plain-Back)

Foam-PE (Adhesive-Backed)

Left frame curtain

Drain pipe

Window locking bracket Sill bracket(2)

Support bracket(2)

Right frame curtain

Type A (14)

Type B (7)

Type C (5)

Type D (2)

Carriage Bolt (2) Lock Nut (4)

Top retainer bar is in product package.

8 Room Air Conditioner

Suggested tool Requirements

SCREWDRIVER(+, -), RULER, KNIFE, HAMMER, PENCIL, LEVEL

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.

Shipping Screws
CHDOEOAFLTROST
Figure 2

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.

Figure 3

7. Insert the Frame Curtain into the Top retainer bar and Frame guides.

Foam-Seal Figure 4

8. Fasten the curtains to the unit with 10 screws (Type A) at both sides.

Top retainer bar

Top retainer bar Foam-PE

Screw (Type A)
Frame guide
Figure 5

Screw (Type A)
Service Manual 9

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.
NOTICE
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.
10 Room Air Conditioner

Sill Bracket Carriage Bolt (M-Screw)
Figure 5
Cabinet Track hole Support Bracket
Carriage bolt and lock nut
Figure 6

Support Bracket Lock nut
Machine screw (Type D) and lock nut
Outer edge of window sill Screw(Type B) Sill bracket

Top retainer bar
Figure 7

Window stool Front angle

Window sash Top retainer bar
Foam-PE
Cabinet Frame curtain Foam-PE
Figure 8

Sash track

Figure 9

Front Angle Screw(Type B)

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)
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. 12)

Figure 10
Screw Figure 11
Figure 12

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

Figure 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.

Figure 14

Installation
Screw(Type C)

Power Cord Screw (Type A)
Foam-Strip
Window locking bracket

TEMP TIME SPFAENED MODE

POWER

Service Manual 11

Operation
Operation

Function of Controls
· 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.

LW1800PR, LW1500PR, LWP1830WAL, LW1804ER
6

DISPLAY LW1500PRY3, LW1800PRZ3
6

COOL FAN DRY HEAT DEFROST

FAN INDOOR DESIRED

ENERGY SAVER
AIR PURYFIER
AUTO RESTART

TIMER

FAN SPEED

MODE

5

4

3

TEMP

POWER

2

1

COOL FAN DRY

FAN INDOOR DESIRED

ENERGY SAVER
AIR PURIFIER
CLEAN FILTER

TIMER

FAN SPEED

MODE

AIR PURIFIER

TEMP

POWER

54 3 7

2

1

REMOTE CONTROL

AIR PURIFIER

Air

Purifier Power

7

1

Temp

2
Fan Speed
4

Sleep Mode

8

3

Auto Timer Swing
5

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

FAN INDOOR DESIRED

ENERGY SAVER
AIR PURYFIER
AUTO RESTART

COOL FAN DRY HEAT DEFROST

FAN INDOOR DESIRED

ENERGY SAVER
AIR PURYFIER
AUTO RESTART

COOL FAN DRY HEAT DEFROST

FAN INDOOR DESIRED

ENERGY SAVER
AIR PURYFIER
AUTO RESTART

COOL FAN DRY HEAT DEFROST

FAN INDOOR DESIRED

ENERGY SAVER
AIR PURYFIER
AUTO RESTART

COOL

ENERGY SAVER

FAN

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.

12 Room Air Conditioner

FAN SPEED SELECTOR Every time you push this button, it is set as follows. (Hi Low Med Hi Low …)

Operation

COOL FAN DRY HEAT DEFROST

FAN INDOOR DESIRED

ENERGY SAVER
AIR PURYFIER
AUTO RESTART

HIGH

COOL FAN DRY HEAT DEFROST

FAN INDOOR DESIRED

ENERGY SAVER
AIR PURYFIER
AUTO RESTART

LOW

COOL FAN DRY HEAT DEFROST

FAN INDOOR DESIRED

ENERGY SAVER
AIR PURYFIER
AUTO RESTART

MED

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
7 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.
8 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.

Service Manual 13

Operation

DISPLAY

REMOTE CONTROL

LW1800ER

LWC182PLMM0, LWC212PLMM0

6

°F F1 LOW F2 MED F3 HIGH

DRY

COOL

TIMER

FAN

ENERGY

SAVER

TIMER

FAN SPEED

MODE

TEMP

5

4

3

2

POWER
1

7

3

5

4

6

Power
1

Temp
2

2

Fan Speed
4

Timer Mode

5

35

3

Auto Swing
7
1

LW1800ERZ3, HBLG1803R

Cool Energy
Saver Fan
Dry

Timer

F1 LOW F2 MED F3 HIGH
TEMP

°F
6
2

3

5

4

1

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.

– 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 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
7 AUTO SWING This button can automatically control the air flow direction.

14 Room Air Conditioner

LWP1820PDL/PEL DISPLAY
6
4 5 3 2 6

Operation

REMOTE CONTROL

1

2 1
4

5

3

7

4

5

1

3

2

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.
6 SIGNAL RECEIVER
7 AUTO SWING The vertical louver swings horizontally by the automatic system and stops when you press the button again.

Service Manual 15

Disassembly

— Before the following disassembly, CONTROL BOX set to OFF and disconnect the power cord.

Mechanical Parts
1. Front Grille
1. Open the lnlet grille downward and remove the air filter. 2. Remove the screw that fastens the front grille.(See
Figure 15) 3. Pull the front grille from the right side. 4. Remove the front grille.(There are 4 hooks.) 5. Re-install the components by referring to the removal
procedure, above.

2. Cabinet
1. After disassembling the FRONT GRILLE, remove the 2 screws that fasten the cabinet at both sides.
2. Remove the 2 screws that fasten the cabinet at back. 3. Pull the base pan forward. (See Figure 16) 4. Remove the cabinet. 5. Re-install the components by referring to the removal
procedure, above.

3. Control Box
1. Remove the front grille. (Refer to section 1) 2. Remove the cabinet. (Refer to section 2) 3. Remove the 2 screws which fasten the power cord. 4. Disconnect the grounding screw from the evaporator
channel. 5. Remove the 1 screw that fastens the control box cover. 6. Remove the housing that connects PCB and motor
wire in the control box. 7. Disconnect the housing that connects Plazma Air
Purifier.(Optional) 8. Remove the screw at left cover of filter case and open
the cover to remove inner screw. (Optional) 9. Remove the nut that fastens the terminal cover. 10. Remove the terminal cover. 11. Remove all the leads from the overload protector. 12. Discharge the capacitor by placing a 20,000 ohm
resistor across the capacitor terminals. 13. Raise the control box upward completely.
(See Figure 17) 14. Re-install the components by referring to the removal
procedure, above. (Refer to the wiring diagram found on page 25 in this manual and on the control box.)

TEMP MODE Cool COOL FAN

En DRY

Saevrgery INDOOR FAN

HEAT DEFROST

DFrayn Timer DESIRED

FPFRFE32U1SENAHMRALSAIEUGOEYVTIRTDWRHFAEOGIRREYTR

TIMER

SPFAENED

°C POWER

ESnaCevrogeoryl Fan Dry
MODE

Timer TIMER

FFF321HMLIGOEDWH TEMP SPFAENED

°C POWER

16 Room Air Conditioner

Figure 15 Figure 16 Figure 157

Air Handling Parts
4. Air Guide and Turbo Fan
1. Remove the front grille. (Refer to section 1) 2. Remove the cabinet. (Refer to section 2) 3. Remove the control box. (Refer to section 3) 4. Remove the 4 screws that fasten the brace. 5. Remove the brace. 6. Remove the 2 screws that fasten the air guide
upper. 7. Remove the air guide upper.(See Figure 18) 8. Remove the 2 screws that fasten the evaporator. 9. Move the evaporator forward and pulling it upward
slightly. (See Figure 19) 10. Pull out the hook of orifice by pushing the tabs
and remove it. (See Figure 20) 11. Remove the clamp with a hand plier that secures
the turbo fan. 12. Remove the turbo fan. 13. Remove the 2 screws that fasten the air guide
from the base pan. 14. Move the air guide backward, and pull out from
the base pan.(Move the air giude lower carefully.) 15. Re-install the components by referring to the
removal procedure, above.
5. FAN
1. Remove the cabinet. (Refer to section 2) 2. Remove the brace (Refer to section 4) 3. Remove the 5 screws that fasten the condenser. 4. Move the condenser to the left carefully. 5. Remove the clamp that secures the fan. 6. Remove the fan. (See Figure 21) 7. Re-install by referring to the removal procedure.

Disassembly
Figure 18 Figure 19 Figure 20 Figure 21
Service Manual 17

Disassembly
6. Shroud
1. Remove the fan. (Refer to section 5) 2. Remove the shroud. (See Figure 22) 3. Re-install the components by referring to the
removal procedure, above.
Electrical Parts
7. Overload Protector
1. Remove the cabinet. (Refer to section 2) 2. Remove the nut that fastens the terminal cover. 3. Remove the terminal cover. (See Figure 23) 4. Remove all the leads from the overload protec-
tor. 5. Remove the overload protector. 6. Re-install the components by referring to the
removal procedure, above.
8. Compressor
1. Remove the cabinet. (Refer to section 2) 2. Discharge the refrigerant system using a
FreonTM 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. 3. Remove the overload protector. (Refer to section 7) 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. 6. Remove the compressor. (See Figure 24) 7. Re-install the components by referring to the removal procedure, above.
18 Room Air Conditioner

Figure 22 Figure 23 Figure 24

9. Capacitor
1. Remove the control box. (Refer to section 3) 2. Open the top cover from the control box.
(See Figure 25) 3. Pull out the capacitor from the control box. 4. Disconnect all the leads of capacitor terminals. 5. Re-install the components by referring to the
removal procedure, above.

TEMP MODE CoolCOOL FAN

Ene DRY

SFavrgery INDOOR FAN

HEAT DEFROST

Drayn Timer DESIRED

PRFEFFUS3E2NA1RAHSAMEULYVITIGOERTRFAEDWHOGIRREYTR

TIMER

SPFAENED

°C POWER

Disassembly
Figure 5

10. Power Cord
1. Remove the control box. (Refer to section 3)
2. Open the top cover from the control box. (Refer to section 9)
3. Disconnect the front panel from the control box. (See Figure 26)
4. Disconnect two leads from the capacitor and relay.
5. Pull out the power cord.
6. Re-install the component by referring to the above removal procedure, above. (Use only one ground-marked hole for ground connection.)
7. 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 attached at the unit.)

TEMP MODE CoolCOOL FAN

Ene DRY

SFavrgery INDOOR FAN

HEAT DEFROST

Drayn Timer DESIRED

PRFEFUFS3EN2A1RASHAEMULYVITIRGOETRFAEDOWHGIRREYTR

TIMER

SPFAENED

°C POWER

Figure 26

Service Manual 19

Disassembly
11. Motor
1. Remove the cabinet. (Refer to section 2) 2. Remove the turbo fan. (Refer to section 4) 3. Remove the fan. (Refer to section 5) 4. Remove the 4 screws that fasten the motor from
the air guide. (See Figure 27) 5. Remove the motor. 6. Re-install the components by referring to the
removal procedure, above.(See Figure 27)
Refrigerating Cycle
12. Condenser
CAUTION: Discharge the refrigerant system using a FreonTM 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.
1. Remove the cabinet. (Refer to section 2) 2. Remove the 4 screws that fasten the
brace.(Refer to section 4) 3. Remove the 5 screws that fasten the condenser
and shroud. 4. After discharging the refrigerant completely,
unbraze the interconnecting tube at the condenser connections. 5. Remove the condenser. 6. Re-install the components by referring to notes. (See Figure 28)
13. Evaporator
1. Remove the control box.(Refer to section 3) 2. Remove the air guide upper. (Refer to section 4) 3. Remove the 2 screws that fasten the evapora-
tor. 4. Move the evaporator sideways carefully.
(Refer to section 4) 5. After discharging the refrigerant completely,
unbraze the interconnecting tube at the evaporator connections. 6. Remove the evaporator. 7. Re-install the components by referring to notes. (See Figure 29)
20 Room Air Conditioner

Figure 27
Figure 28 Figure 29

14. Capillary Tube
1. Remove the cabinet. (Refer to section s2) 2. After discharging the refrigerant completely,
unbraze the interconnecting tube at the capillary tube.(See caution above)

Disassembly
3. Remove the capillary tube. 4. Re-install the components by referring to notes.

NOTICE
— Replacement of the refrigeration cycle. 1. When replacing the refrigeration cycle, be sure to
Discharge the refrigerant system using a FreonTM 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 unbraze the pinch-off tubes. 3. Braze service valves into the pinch-off tube ports, leaving the valves open. 4. Braze the pinch-off tubes with Service valves. 5. Evacuate as follows. 1) Connect the vacuum pump, as illustrated figure
30A. 2) Start the vacuum pump, slowly open manifold
valves A and B with two full turns counterclockwise and leave the valves open. The vacuum pump is now pulling through valves A and B up to valve C by means of the manifold and entire system.
CAUTION: 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.
3) Operate the vacuum pump vaccum for 20 to 30 minutes, until 600 microns of vaccum 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 figure 30B. 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 figure 30B. 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 Lowside. 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 brazing and braze 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.
Service Manual 21

Disassembly
Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment. Pin-off tool capable of making a vapor-proof seal, Leak detector, Tubing cutter, Hand Tools to remove components, Service valve.

CONDENSER (HIGH PRESSURE SIDE)

COMPOUND GAUGE

MANIFOLD

GAUGE

B

A

CAPILLARY TUBE

SEE INSETS BELOW
EVAPORATOR (LOW PRESSURE SIDE)

COMPRESSOR

A B
EXTERNAL VACUUM PUMP
Figure 30A-Pulling Vacuum
22 Room Air Conditioner

LOW HI

B

A

CHARGING CYLINDER
C

Figure 30B-Charging

Schematic Diagram
Electronic Control Device

Schematic Diagram

Service Manual 23

Schematic Diagram 24 Room Air Conditioner

CN-TELE
SMW200-03 (RD)
33
22
11

5V
C01T 0.1 50V

PIPE-TH

CN-TH2
SMW250-02 11
22

C02T 0.001
D01T 1N4148

Q04T A104M
Q01T C104M

5V Q03T C104M
5V
Q02T A104M

R01T

1K

Rx

C03T
0.001 25V

Tx

J7

11

2

12

1

ROOM-TH

CN-TH1

1

SMAW200-02 1

22

10

3

5V
R21H 12.1K
1%

5V

R04H 6.2K 1%

R02H 12.1K 1%

R22H
12.1K 1%

OSC01B RT8.00MG

R01B 1M

5V

C01A 0.01 50V

R01A 20K

3
+ C02A 1uF 10V

1 3.6V
2

5V
IC01A S7136

Model Auto Restart Non Auto Restart

EEPROM CAT93C46

1 A0 Vcc 8

2 A1

WP 7

3 A2 SCL 6

4 GND SDA 5

EEPROM R04P

O

X

O

R04P
5V R02P R03P 20K 20K

HVB SW2 SW1

S/V4WAY
FAN MOTOR
CAPACITOR FAN
C

HERM

MAIN POWER

COMP

CN-HVB
SMW200-03(BL)
33

22

11

12V

11
2 2 CN-CONT J5 SMW200-03(YL) 33

33 2 2 CN-12V
SMW200-03(WH) 11

RY-COMP

4

RY-4WAY

5

RY-LOW

6

7

RY-MED

8

RY-HI

9

CN-4WAY
YW396-03AV(YL) 33 11
CN-MOTOR
YW396-09AV 11 33 55 77 99
CN-PWR
YW396-03AV 33 11

Model Cool Only Heat Pump
RY-4WAY

RY-4WAY X O

J07 CN-4WAY

O

X

O

CN-TH2 X O

RY-HI RY-MED RY-LOW
C01J 0.1/275V
R01J 120 1/2W

3 5V
2 12V
1 CN-AC/DC
51580-12 52045-1245 STRAIGHT

OR1H

9

10

7

11

6

8

12

5

7

13

4

6

14

3

5

15

2

4

16

1

12V

9

8

IC01M

ULN2004A

5V +
C02L 220 10V

Vcc Vout
GND RECEIVER

OR2H
R01L 1K

5V
R01P 20K

22 21 20 19 18 17 16 15 14 13 12

COMP

23

11

SYNC 24

10

4WAY 25

9

LOW

26

8

HVB

27

MICOM

7

ION 28

TMP87CH47U

6

MED 29

5

HI

30

4

Receiver

31

3

Buzzer

32

2

LED out3

33

1

34 35 36 37 38 39 40 41 42 43 44

R05P

Rx

10K

SDA

SCL

Digit4 (Scan4)

Digit3 (Scan3)

Digit2 (Scan2)

Digit1 (Scan1)

Digit0 (Scan0)

SEG-a

SEG-b

SEG-c

C01L 680pF 50V

LED out2 LED out1 LED out0
KEY1 KEY0 SLIDE SW VDD SEG-g SEG-f SEG-e SEG-d

BZ01E
PKM13EPY -4002

R02E 20
R01E 1K

R12F 10K
5V

10 5V

C05D +

C06D

220

0.01

10V

50V

11

12V

12

CN-AC/DC

5V

51581-12(YEONHO) 52044-1245(MOLEX) ANGLE

Option2 Option1 Pipe TH Room TH VAref VSS Osc out Osc in /Reset TEST

RY-COMP G4A-1A-E-LG

ZNR01J
SVC271D-14A SVC271D-14A

FUSE 250V/T2A

POWER TRANS

1

7

D02D

D05D

2

D03D 4

D04D + C01D

D02D~D05D

1000

1N4004

35V

12V

IC01D

O

I

7812

+ C02D C03D

0.1

1000

50V

16V

IC02D

O

I

7805

C04D 0.01 25V

5V
C05D 0.01 25V

R06P 10K

C01F R01F 0.001 10K

C02F R03F 0.001 10K

IC01G

ULN2004A

1

16

2

15

3

14

4

13

5

12

6

11

7

10

8

9 12V

R01G 680 R02G 680 R03G 680 R04G 680 R05G 680 R06G 680 R07G 680

R04P 1K

Q03G A101S

Q02G A101S

5V
Q01G A101S

FAN SW01G D01G

TEMP DOWN

ON/OFF

SW02G

SW03G

D02G

D03G

TIMER SW04G D04G

MODE TEMP UP

SW05G

SW06G

D05G

D06G

COOL DEFROST DRY/HEAT
TIMER FAN
E/SAVER

10

Digit1

3a

a

9b

8c f b

6d

g

7e

4f g
1

ec d

5 Digit0
a fb
g
ec d

88 SEGMENT

MODEL : LWP1820PDL/LWP1820PEL

1

BK

CN-MOTOR

CN-AC/DC

GN/YL

BL

(GN)

MOTOR

RD YL

DC PCB

ASSEMBLY

5

CN-TH1

OR(BR)

7

RY-LOW RY-MED RY-HI

SOLENOID VALVE

HIGH PRESSURE CN-P/S SWITCH
CAPACITOR

CN-TH2 RY-4WAY

ROOM THERMISTOR PIPE THERMISTOR

YL

CN-4WAY

2

OR(BR)

POWER TRANS

REVERSING VALVE

WH(BL) (Ribbed)

BK

CN-PWR

6

ZNR01J

RD

DC12V

SWITCH

BK(BR) (Plain) GN/YL

FUSE 250V/T2A (115V/T2A)

CN-12V

(GN)

H.V.

RY-COMP

ASSEMBLY

COMP.

CN-HVB

3

BL

AC PCB

BK

RD

OLP

ASSEMBLY

8

4
WIRING DIAGRAM

3854AR3563U

AIR FILTER ASSEMBLY

MODEL : LWC182PLMM0/LWC212PLMM0

1 5 7
2 6
3 4

LOCATION NO.

DESCRIPTION

1

MOTOR ASSY

2

CAPACITOR

3

COMPRESSOR

4

OVERLOAD PROTECTOR

5

DC PCB ASSEMBLY

6

AC PCB ASSEMBLY

7

THERMISTOR

8

PLASMA FILTER ASSY

Schematic Diagram

MODEL : LW1800ERZ3/LW1800PR, HBLG1803R LW1800ER/LWP1830WAL

1

BK

CN-MOTOR

GN/YL

BL

(GN)

MOTOR

RD YL

OR

CN-AC/DC

5 DC PCB ASSEMBLY

RY-LOW RY-MED RY-HI

CAPACITOR

CN-TH1

YL F

POWER

7

C

OR(BR)

TRANS

BK

CN-PWR

THERMISTOR

2

H

RD

DC12V

SWITCH

ZNR01J

WH(BL) (Ribbed)

FUSE

CN-12V

250V/T2A

BK(BR) (Plain)

GN/YL

(GN)

R

(115V/T2A)

3

CN-HVB

H.V. ASSEMBLY

6

RY-COMP 4

BK

RD

3

COMP. S

C

BL

AC PCB ASSEMBLY

OLP

4

WIRING DIAGRAM 3854AR3563N

AIR FILTER ASSEMBLY

8

MODEL : LW1500PRY3/LW1500PR LW1800PRZ3/LW1804ER LWC182PLMD1
1 5

7 2

6

3

4

8

Q’TY PER SET
1 1 1 1 1 1 1 1

S: Service Parts N: Non Service Parts
REMARKS
S S S S S S S S

Service Manual 25

Schematic Diagram

Components Location

MODEL: LW1800PR/LW1800ER LW1500PR/LWP1830WAL LWP1820PDL/LWP1820PEL LW1800ERZ3/LW1804ER LWC183PLMD1

D02D D03D D04D D05D
IC01D

J1 CN-AC/DC CN-12V

CN-CON

J5 CN-HVB
C03T

HEAT SINK

J4 Q02T

C01D

R01T Q01T

Q03T

C02D

RY-COMP
ASSEMBLY:6871A20167

RY-4WAY

RY-LOW

C05D

C04D

J2

QIC02DT

RY-MED

J3 RY-HI

Q04T

J6 D01T C02T
J7

MODEL: LWC182PLMM0/LWC212PLMM0 LW1500PRY3/LW1800PRZ3 HBLG1803R

CN-TELE CN-TH2

POWER TRANS FUSE

CN-PWR
ZNR01J R01J

E03J

J8

E04J

CN-MOTOR

E02J

E05J

E01J

CN-4WAY C01J

2. Display P.C.B Assembly
MODEL: LW1800PR/LW1500PR LWP1830WAL
CN-AC/DC J05 J01 J02

SW04G TIMER

J04

C05D

SW01G FAN SPEED

SW05G MODE

CN-TH1

R01G

R02G

R03G R04G

R05G

R06G

R07G

J14

J08

R08G

J15

R09G J16

J07

R10G

J08

J12

J17

J09

J20

J10

J13

J19

J18

J11 OSC01B
IC03G

SW02G TEMP DOWN

RECEIVER

IC01A

SW06G TEMP UP

C02L

C02A

BZ01E

J21

J22

J23

J2ZD02F

ZD01F

SW03G POWER

J24
26 Room Air Conditioner

MODEL: LWC182PLMM0/LWC212PLMM0 LW1800ERZ3/HBLG1803R

MODEL: LW1800ER/LWP1820PDL/LWP1820PEL

Schematic Diagram

MODEL: LW1804ER/LW1500PRY3/LW1800PRZ3/LWC183PLMD1

Service Manual 27

Troubleshooting Guide
Troubleshooting Guide
Piping System

CONDENSER COIL FAN
MOTOR
EVAPORATOR COIL

CAPILLARY TUBE COMPRESSOR TURBO FAN

Figure 31 is a brief description of the important components and their function in what is called the refrigeration system. This will help you to understand the refrigeration cycle and the flow of the refrigerant in the cooling cycle.

ROOM AIR CONITIONER
CYCLE OF REFRIGERATION

EVAPORATOR COILS

COOLED AIR

COMPLETE LIQUID BOIL OFF POINT

SUCTION LINE COOL LOW PRESSURE VAPOR

ROOM AIR HEAT LOAD

CONDENSER COILS
VAPOR INLET HOT
DISCHARGED
AIR

LIQUID PRESSURE DROP
28 Room Air Conditioner

MOTOR

OUTSIDE COOLING AIR FOR REFRIGERANT PASS THROUGH

COMPRESSOR
OIL
(LIQUID REFRIGERANT) CAPILLARY TUBE
Figure 31

LIQUID OUTLET
HIGH PRESSURE VAPOR LIQUID REFRIGERANT LOW PRESSURE VAPOR

Troubleshooting Guide

In general, possible trouble is classified in two kinds. 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 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

Check outdoor coil (heat exchanger) & the fan operation.
Check gas leakage.
Repair gas leak.
Replacement of unit if the unit is beyond repair.

Check heat load increase.
Clean condenser.
Not on separate circuit.
Check inside gas pressure.
Adjusting of refrigerant charged.

Malfunction of compressor.

Check clogging in refrigeration circuit.
Repair clogging in refrigeration circuit.

Satisfactory operation with temperature difference of inlet & outlet air ; 44~50°F(7~10°C)

Replacement of compressor.
Service Manual 29

Troubleshooting Guide

Fails to Start

Check of power source.
Check of control switch setting.
Compressor only fails to start. Drop of power voltage. Defect of compressor capacitor. Capacitor check. Replacement

Improper thermostat setting. Loose terminal connection. Improper wiring.

Check circuit breaker and fuse.
Gas leakage of feeler bulb of thermostat
Check of control switch.
Fan only fails to start.
Improper wiring.
Defect of fan motor capacitor.
Irregular motor resistance ( ). Irregular motor insulation ( ).
Replacement of fan motor.

Irregular motor resistance ( )
Irregular motor insulation ( )
Replacement of compressor (Motor damaged)
30 Room Air Conditioner

Regular but fails to start.
Replacement of compressor (locking of rotor, metal).

Electrical Parts Troubleshooting Guide

Troubleshooting Guide

Possible Trouble 1

The unit does not operate.

Is the

Trans input power AC 115V?

NO

(208/230V for LWL1230WAL)

· Check the Fuse. · Check the wiring diagram.

YES

Is the Trans output power

NO

about AC 14V?

YES

Is shorted the Trans. output? NO · Check the Main PCB pattern.

YES

· Replace the Trans.

Is output Voltage of IC01D

NO

DC 12V?

YES

· Replace D02D~D05D. · Replace IC01D.

Is output Voltage of IC02D

NO

DC 5V?

YES

· Replace IC02D.

Is the reset circuit OK?

NO

(The No.14 of

Micom is 5V.)

YES

Is the

connection between

NO

AC and DC

OK?

YES

· Replace IC01A, C02A.
· Connect connector exactly.

NO Is the voltage No.18 of Micom
DC 5V?
YES
Replace AC PCB Ass’y.

· Check the PCB pattern.

Service Manual 31

Troubleshooting Guide

Possible Trouble 2

The compressor does not operate.

Is setting Temp. set lower than Room

NO

Temp.-0.5°C?

YES

· Select the setting Temp. to lower Number.

Is the voltage No.10

NO

of IC01M 0V?

YES
· Check the RY-COMP. · Check the wiring
Diagram.

Is the voltage N0.9 of

NO

IC01M DC 12V?

YES · Replace IC01M.

NO Does the Unit delay for
3 minutes? YES
· Wait 3 Minutes.
· Replace MAIN PCB Ass’y.

Possible Trouble 3

The compressor always operate.

Is the wire connection of

NO

RY-COMP OK?

YES

· Check the RY-COMP.

· Connect LEAD Wire to RY-COMP again.

32 Room Air Conditioner

Possible Trouble 4

FAN does not operate.

Is the voltage NO.1 or 2 or 4 NO of IC01M DC 12V?
YES
Is the voltage NO.16 or 15 or 13 NO of IC01M 0V?
YES · Check the RY-Hi or
RY-Med or RY-Lo. · Check the wiring diagram.

Troubleshooting Guide
· Replace IC01M. · Replace IC01M.

Possible Trouble 5

The function of Energy Saver does not operate.

Is the mode

NO

key pushed once more from

cool mode?

YES

Is the voltage No.3 of

NO

CN-AC/DC of AC PCB

Ass’y DC 5V?

YES

· Reference to OWNER’S MANUAL.

· Set the mode key to Energy Saver mode.
· Check the Energy Saver mode key.
· Check the pattern of AC & DC PCB.

Service Manual 33

Troubleshooting Guide
Possible Trouble 6 Remote controller does not operate.

Is the voltage of Battery

NO

over 2.3V?

YES

Is the voltage No.10

NO

of CN-AC/DC on DC PCB

Ass’y DC 5V?

YES

Is the connection of

NO

CN-AC/DC OK?

YES · Replace Receiver Ass’y.

· Replace the battery.
· Check the PCB pattern.
· Connect connector to CN-AC/DC exactly.

Possible Trouble 7 It displays abnormally on DC PCB Ass’y.

NO Is the IC01G good?

YES

NO

Is the connection of

NO

CN-AC/DC OK?

YES

Does the IC03G (Q01G, Q02G, Q03G for Delux Model)

NO

operate normally on DC

PCB Ass’y?

YES

· Replace the DC PCB Ass’y.
34 Room Air Conditioner

· Replace IC01G.
· Connect connector to CN-AC/DC exactly.
· Replace IC03G (Q01G, Q02G, Q03G
for Delux Model).

ElectrIc Parts

Troubleshooting Guide

Possible Trouble 1

The unit does not operate.

Is the

Trans input power AC 115V?

NO

(208/230V for LWL1230WAL)

· Check the Fuse. · Check the wiring diagram.

YES

Is the Trans output power

NO

about AC 14V?

YES

Is the Trans. output shorted? NO · Check the AC PCB pattern.

YES

· Replace the Trans.

Is output Voltage of IC01D

NO

DC 12V?

YES

· Replace D02D~D05D. · Replace IC01D.

Is output Voltage of IC02D

NO

DC 5V?

YES

· Replace IC02D.

Is the reset circuit OK?

NO

(The No.14 of Micom is 5V.)

YES

Is the

connection between

NO

AC and DC

OK?

YES

· Replace IC01A, C01A.
· Connect connector exactly.

NO Is the voltage No.40 of Micom
DC 5V?
YES
Replace AC PCB Ass’y.

· Check the PCB pattern.

Service Manual 35

Troubleshooting Guide

Possible Trouble 2

The compressor does not operate.

Is desired Temp. set lower than Room

NO

Temp.-0.5°C?

YES

· Select the desired Temp. to lower Number.

Is the voltage No.10

NO

of IC01M 0V?

Is the voltage N0.9 of

NO

NO Is the Unit for 3 minutes

IC01M DC 12V?

delay?

YES
· Check the RY-COMP. · Check the wiring
Diagram.

YES · Replace IC01M.

YES · Wait 3 Minutes.
· Replace AC PCB Ass’y.

Possible Trouble 3

The compressor always operate.

Is the wire connection of

NO

RY-COMP OK?

YES

· Check the RY-COMP.

· Connect LEAD Wire to RY-COMP again.

36 Room Air Conditioner

Possible Trouble 4

FAN does not operate.

Is the voltage NO.1 or 2 or 4 NO of IC01M DC 5V?
YES
Is the voltage NO.16 or 15 or 13 NO of IC01M 0V?
YES · Check the RY-Hi or
RY-Med or RY-Lo. · Check the wiring diagram.

Possible Trouble 5

Remote controller does not operate.

Is the voltage of Battery

NO

over 2.3V?

YES

Is the voltage No.10

NO

of CN-AC/DC on AC PCB

Ass’y DC 5V?

YES

Is the connection of

NO

CN-AC/DC OK?

YES · Replace Receiver Ass’y.

Troubleshooting Guide
· Replace IC01M. · Replace IC01M.
· Replace the battery. · Check the PCB pattern. · Connect connector to CN- AC/DC exactly.

Service Manual 37

Troubleshooting Guide

Possible Trouble 6

It displays abnormally on DC PCB Ass’y.

NO Are the IC01G and IC02G
good?

YES

NO

Is the connection of

NO

CN-AC/DC OK?

YES

Does IC03G

NO

operate normally on AC

PCB Ass’y?

YES

· Replace the DC PCB Ass’y.

· Replace IC01G, IC02G.
· Connect connector to CN-AC/DC exactly.
· Replace IC03G.

38 Room Air Conditioner

Troubleshooting Guide

COMPLAINT Fan motor will not run.
Fan motor runs intermittently Fan motor noise.
Compressor will not run, but fan motor runs.

CAUSE No power Power supply cord Wire disconnected or connection loose Capacitor (Discharge capacitor before testing.) Will not rotate
Revolves on overload.
Fan Turbo Loose clamper Worn bearings
Voltage Wiring

REMEDY
Check voltage at outlet. Correct if none.
Check voltage to Control Box. If none, check power supply cord. Replace cord if circuit is open.
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 for condenser fan must have 1/4 to 5/16 inch clearance to the base. If it hits 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. 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.
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.
Check voltage. 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.

Service Manual 39

Troubleshooting Guide

COMPLAINT

CAUSE

REMEDY

Compressor will not run, but fan motor runs.

Thermistor

Capacitor (Discharge capacitor before servicing.)
Compressor
Overload

Compressor cycles on overload.

Voltage Overload

Compressor cycles on overload.

Fan motor
Condenser air flow restriction

Condenser fins (damaged)

Compressor cycles on overload.

Capacitor Wiring

Refrigerating system

Insufficient cooling or heat- Air filter

ing

Exhaust damper door

Unit undersized

Excessive noise

Turbo or fan

Copper tubing

Check the TEMP control. If not at the lowest number, set TEMP control to this setting and restart the unit. Check the continuity of the thermistor. Replace the thermistor if the 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. 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 overload. Straighten the fins or replace the coil.
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 turbo or fan is hitting air guide, rearrange the air handling parts.
Remove the cabinet carefully and rearrange tubing not to contact cabinet, compressor, shroud, and barrier.

40 Room Air Conditioner

Exploded View
COOLING MODEL
130910

Exploded View

267110

152312 354210

148000
346811 359012 W48602 349480

559010 149980

554031

W48602

349600

147582-1 147581

147582-2

152302 135303

352390-2 135312
130410

349001

268712

268714

238310

COOL FAN

DRY

INDOOR FAN

HEAT DEFROST

DESIRED

PREUSENARASAEUYVTIRTRFAEOGIRREYTR

ESnCeaorvgoeyrl Fan Dry
MODE

TIMER

SFPAENED

MODE

Timer TIMER

F1 F2 F3

LMHOIEGWDH

TEMP SPFAENED

°C POWER

TEMP

POWER

237200

263230

W0CZZ

135500

352390-1

567502 554160

249950

550140

W52106-1

352111

W52106-2

264110

35211A 352113

Service Manual 41

Exploded View HEATING MODEL
130910

267110

148000

554031 149980

152312 354210

346811 359012 W48602 349480
349600

W48602 559010

147582-1 147581

147582-2

152302 135303

352390-2 135312
130410

349001

268712

268714

238310

COOL FAN

DRY

INDOOR FAN

HEAT DEFROST

DESIRED

PREUSENARASAEUYVTIRTRFAEOGIRREYTR

TIMER

SFPAENED

MODE

TEMP

POWER

237200

263230

W0CZZ

135500

352390-1

567502 554160

249950

550140

352115-1

552111

352115-2

264110

352113 35211A
566000 552202

42 Room Air Conditioner

Replacement Parts List

LOCATION NO.

DESCRIPTION

130410 130910 135303 135312 147581 147582-1 147582-2 148000 149980 152302 159830 237200 238310 249950 263230 264110 267110 268712 268714 349001 349480 349600 352113 35211A 352390-1 352390-2 354210 359012 550140 552111 554031 559010 567502 W0CZZ W48602 W52106-1 W52106-2 554160 346811

BASE ASSEMBLY,WELD[SINGLE] CABINET ASSEMBLY,SINGLE GRILLE,INLET GRILLE ASSEMBLY,FRONT(SINGLE) LOUVER,HORIZONTAL LOUVER,VERTICAL LOUVER,VERTICAL BRACE SHROUD FILTER ASSEMBLY,AIR CLEANER AIR CLEANER ASSEMBLY PANEL,CONTROL ESCUTCHEON CONTROL BOX ASSEMBLY,SINGLE THERMISTOR ASSEMBLY POWER CORD ASSEMBLY REMOTE CONTROLLER ASSEMBLY PWB(PCB) ASSEMBLY,MAIN(DC) PWB(PCB) ASSEMBLY,MAIN(AC) DAMPER,VENTILATION ORIFICE MOUNT,MOTOR TUBE ASSEMBLY,DISCHARGE SINGLE TUBE ASSEMBLY,SUCTION(OUTDOOR) AIR GUIDE ASSEMBLY AIR GUIDE ASSEMBLY EVAPORATOR ASSEMBLY,FIRST FAN ASSEMBLY,TURBO ISOLATOR,COMP TUBE ASSEMBLY,CAPILLARY CONDENSER ASSEMBLY,BENT FAN ASSEMBLY,AXIAL O.L.P CAPACITOR,DRAWING CLAMP,SPRING TUBE,FORMED TUBE,FORMED COMPRESSOR SET MOTOR ASSEMBLY,SINGLE

Replacement Parts List

PART NO.
LW1800PRZ3
3041A20023D 3091AR6057E 3530A10080A 3531A20095A 4758A30022A 4758A20042A 4758A20042B 4800A20001A 4998A10013A 5231A20008A 5983A10009K 3720A10110A 3831A10020F 4995A30010K 6323A20004E 6411A20011K 6711A20052A 6871A20323A 6871A20271B 4900A20004A 4948A30008A 4960AR2895B 5211A30066N 5211A20441A 5239A20002A 5239A20003A 5421A20091A 5901A20009A
4H00982C 5211A30275R 5403A20062B 5901A20010A 6750U-L016A 6120AR2194F
3H02932C 5210A21099E 5210A21099F 2520UMKK2AA 4681A20011M

REMARK

Service Manual 43

Replacement Parts List

LOCATION NO.
130410 130910 135303 135312 135500 146812 147581 147582-1 147582-2 148000 149980 152302 152312 237200 238310 249950 263230 264110 268712 268714 346811 349001 349480 349600 352111 352113 352115-1 352115-2 35211A 352390-1 352390-2 354210 359012 550140 552101 552111 554031 554160 559010 567502 W0CZZ W48602 267110

DESCRIPTION
BASE ASSEMBLY, WELD[SINGLE] CABINET ASSEMBLY, SINGLE GRILLE, INLET GRILLE ASSEMBLY, FRONT(SINGLE) COVER MOTOR ASSEMBLY,SYNC. LOUVER, HORIZONTAL LOUVER, VERTICAL LOUVER, VERTICAL BRACE SHROUD FILTER ASSEMBLY, AIR CLEANER PLASMA FILTER ASS’Y PANEL, CONTROL ESCUTCHEON CONTROL BOX ASSEMBLY, SINGLE THERMISTOR ASSEMBLY POWER CORD ASSEMBLY PWB(PCB) ASSEMBLY, MAIN(DC) PWB(PCB) ASSEMBLY, MAIN(AC) MOTOR ASSEMBLY, SINGLE DAMPER, VENTILATION ORIFICE MOUNT, MOTOR TUBE ASSEMBLY,CAPILLARY TUBE ASSEMBLY, DISCHARGE SINGLE TUBE FORMED, EVAPORATOR TUBE FORMED, EVAPORATOR TUBE ASSEMBLY, SUCTION(OUTDOOR) AIR GUIDE ASSEMBLY AIR GUIDE ASSEMBLY EVAPORATOR ASSEMBLY, FIRST FAN ASSEMBLY, TURBO ISOLATOR, COMP TUBE,CAPILLARY TUBE ASSEMBLY, FORMED COND CONDENSER ASS’Y COMPRESSOR SET FAN ASSEMBLY, AXIAL OVERLOAD PROTECTOR CAPACITOR, DRAWING CLAMP, SPRING REMOTE CONTROLLER ASSEMBLY

LWP1820PDL
3041A20023B 3091AR6057H 3530A10080A 3531A20095A 3550A30122A
4758A30022A 4758A30023A 4758A30023B 4800A20001A 4998A10013A 5231A20008A
3720A20156A 3831A10023B 4995A20194U 6323A20004E
3H01307F 6871A20187C 6871A20167G 4681AR6033V 4900A20004A 4948A30008A 4960AR1596A
5211A30066T 5210A21099L 5210A21099M 5211A20441D 5239A20002B 5239A20003B 5421A20091D 5901A20009A
4H00982C –
5211AR3399R 5403A20004J 2520UMDK2DA 5901A20010A
6120AR2194P
3H02932C 6711A20034Z

PART NO. REMARK
LWC182PLMM0 LWC212PLMM0

3041A20023B 3041A20023Z

R

3091AR6057H 3091AR6057H

R

3530A10080A 3530A10080A

R

3531A20095D 3531A20095D

R

3550A20217A 3550A20217A

R

2H01102A

R

4758A30022A 4758A30022A

R

5210A21099L

–

R

5210A21099M

–

R

4800A20001A 4800A20001A

R

4998A10013A 4998A10013A

R

5231A20008A 5231A20008A

R

–

3720A10112A

R

3720A10112A 3831A10021P

R

3831A10021P

R

4995A20330B 4995A20330A

R

6323A20004E 6323A20004E

R

3H01307G

3H01307H

R

6871A20325C 6871A20325C

R

6871A20271C 6871A20271C

R

4681AR6033V 4681A20081G

R

4900A20004A 4900A20004A

R

4948A30008A 4948A30008A

R

4960AR1596A 4960AR1596A

R

5211A30275J 5211A30275V

5211A30066T 5211A20805J

R

–

5210A21099X

R

–

5210A21099W

R

5211A20441D 5211A20441H

R

5239A20002B 5239A20002B

R

5239A20003C 5239A20003C

R

5421A20091E 5421A20091C

R

5901A20009A 5901A20009A

R

4H00982C

–

R

5210A20556N

–

R

–

R

5403A20004K 5403A20062H

R

2520UMDK2DA 2520UHCK2AA

R

5901A20010A 5900AR1508A

R

–

R

6120AR2194P 2A00986Y

R

3H02932C

R

6711A20034F 6711A20034F

R

44 Room Air Conditioner

Replacement Parts List

LOCATION NO.
130410 130910 135303 135312 135500 146812 147581 147582-1 147582-2 148000 149980 152302 152312 237200 238310 249950 263230 263230 264110 267110 268712 268714 346811 349001 349480 349600 35211A 352111 352113 352115-1 352115-2 35211A 352390-1 352390-2 354210 359012 550140 552101 552111 552113 552116 552202 554031 554160 559010 561410 566000 567502 W0CZZ W48602 267110

DESCRIPTION

LW1500PRY3

BASE ASSEMBLY, WELD[SINGLE]

3041A20023B

CABINET ASSEMBLY, SINGLE

3091AR6057E

GRILLE, INLET

3530A10080A

GRILLE ASSEMBLY, FRONT(SINGLE) 3531A20095A

COVER, CONTROL BOX

3550A30122A

MOTOR ASSEMBLY,SYNC.

–

LOUVER, HORIZONTAL

4758A30022A

LOUVER, VERTICAL

4758A20042B

LOUVER, VERTICAL

4758A20042A

BRACE

4800A20001A

SHROUD

4998A10013A

FILTER ASSEMBLY,AIR CLEANER

–

FILTER ASSEMBLY, AIR CLEANER

5231A20008A

PANEL, CONTROL

5983A10009K

ESCUTCHEON

6871A20271A

CONTROL BOX ASSEMBLY, SINGLE 3720A10110A

THERMISTOR ASSEMBLY

6871A20323A

THERMISTOR ASSEMBLY

6323A20004E

POWER CORD ASSEMBLY

6411A20011J

REMOTE CONTROLLER ASSEMBLY

6711A20052A

PWB(PCB) ASSEMBLY, MAIN(DC)

4995A30010D

PWB(PCB) ASSEMBLY, MAIN(AC)

3831A10020F

MOTOR ASSEMBLY, SINGLE

4681AR6033X

DAMPER, VENTILATION

4900A20004A

ORIFICE

4948A30008A

MOUNT, MOTOR

4960AR1596A

TUBE ASSEMBLY,SUCTION(OUTDOOR) 5211A20441C

TUBE, CAPILLARY

5211AR3399L

TUBE ASSEMBLY,DISCHARGE SINGLE

–

TUBE FORMED, EVAPORATOR

5211A20215G

TUBE FORMED, EVAPORATOR

5211A20215H

TUBE ASSEMBLY,SUCTION(OUTDOOR)

AIR GUIDE ASSEMBLY

5239A20002A

AIR GUIDE ASSEMBLY

5239A20003A

EVAPORATOR ASSEMBLY, FIRST

5421A20091A

FAN ASSEMBLY, TURBO

5901A20009A

ISOLATOR, COMP

4H00982C

TUBE,CAPILLARY

–

TUBE ASSEMBLY,CAPILLARY

–

TUBE ASSY, CONDENSER OUT

5211A30066R

TUBE ASSEMBLY, REVERSING

–

VALVE, REVERSING

–

CONDENSER ASSEMBLY, BENT

5403A20062B

COMPRESSOR SET

2520UMTC2AA

FAN ASSEMBLY,AXIAL

5901A20010A

COIL ASSEMBLY, REVERSING VALVE

–

SWITCH, PRESSURE

–

O.L.P

–

CAPACITOR, DRAWING

0CZZA20001L

CLAMP, SPRING

3H02932C

REMOTE CONTROLLER ASSEMBLY

–

PART NO.
LW1800ERZ3
3041A20023C 3091AR6057E 3530A10080A 3531A20095A 3550A30122A
4758A30022A 4758A20042B 4758A20042A 4800A20001A 4998A10013A
5231A20008A
6871A20167D 3720A10112A 6871A20325A 6323A20004E 6411A20011K 6711A20034G 4995A20278L 3831A10021M 4681A20011M 4900A20004A 4948A30008A 4960AR2895B 5211A20441A
–
5239A20002A 5239A20003A 5421A20091A 5901A20009A
4H00982C –
5211A30275R 5211A30066N
5403A20062B 2520UMKK2AA 5901A20010A 6750U-L016A 6120AR2194F 3H02932C –

REMARK LW1804ER

3041A20023D

R

3091AR6057E

R

3530A10080A

R

3531A20095A

R

3550A20089A

R

–

R

4758A30022A

R

4758A20042A

R

4758A20042B

R

4800A20001A

R

4998A10013A

R

5231A20008A

R

–

R

–

R

–

R

4995A30010M

R

6323A20004E

R

6411A20011K

R

6871A20323C

R

6871A20167L

R

4681A20011M

R

4900A20004A

R

4948A30008A

R

4960AR2895B

R

–

R

–

R

5211A30066N

R

5210A21099A

R

5210A21099B

R

5211A20441A

R

5239A20002A

R

5239A20003A

R

5421A20091A

R

5901A20009A

R

4H00982C

R

5210A20492R

R

5211A30275R

R

–

R

–

R

–

R

5403A20062B

R

2520UMKK2AA

R

5901A20010A

R

–

R

–

R

6750U-L016A

R

6120AR2194F

R

3H02932C

R

6711A20034G

R

Service Manual 45

Replacement Parts List

LOCATION NO.

DESCRIPTION

130410 130910 135312 135303 135500 147581 147582-1 147582-2 148000 149980 152302 152312 237200 249950 268712 238310 268714 263230 264110 346811 349001 349480 349600 352111 352113 W52106-1 W52106-2 35211A 352390-1 352390-2 354210 567502 550140 554031 554160 559010 359012 W48602 W0CZZ 267110

BASE PAN WELD ASS’Y CABINET ASS’Y FRONT GRILL ASS’Y INLET GRILLE COVER, CONTROL BOX HORIZONTAL LOUVER VERTICAL LOUVER VERTICAL LOUVER BRACE SHROUD AIR FILTER ASS’Y PLASMA FILTER ASS’Y CONTROL PANEL CONTROL BOX ASS’Y DISPLAY PCB ASS’Y ESCUTCHEON MAIN PCB ASS’Y THERMISTOR ASS’Y POWER CORD ASS’Y MOTOR ASS’Y VENTILATION DAMPER ORIFICE MOUNT MOTOR TUBE ASS’Y CAPILLARY DISCHARGE TUBE TUBE FORMED, EVAPORATOR TUBE FORMED, EVAPORATOR SUCTION TUBE ASS’Y AIR GUIDE ASSEMBLY AIR GUIDE ASSEMBLY EVAPORATOR ASS’Y OVERLOAD PROTECTOR ANTI-VIBRATION BUSH CONDENSER ASS’Y COMPRESSOR FAN TURBO FAN CLAMP, SPRING CAPACITOR REMOTE CONTROLLER

PART NO.

LW1800PR LW1800ER LW1500PR LWP1830WAL

3041A20023B

3091AR6057E

3091AR6057H

3531A20095A

3531A20095B

3530A10080A

3550A30122A

4758A30022A

4758A30023A

4758A30023B

4800A20001A

4998A10013A

5231A20008A

5983A10009H

–

5983A10009H

3720A20141A 3720A20156A

3720A20141A

4995A20194C 4995A20194J 4995A20194M 4995A20194R

6871A20185A 6871A20187A 6871A20185A 6871A20185C

3831A10020B 3831A10023A

3831A10020B

6871A20167B 6871A20167D 6871A20167E 6871A20167B

6323A20004E

6411A20011K

6411A20011J 6411A20011K

4681AR6033V

4681AR6033X 4681AR6033V

4900A20004A

4948A30008A

4960AR1596A

5211AR3332Z

5211A30275F 5211AR3399L

5211A30066N

5211A30066R 5211A30066N

5210A21099A

5210A21099E

5210A21099B

5210A21099F

5211A20441A

5211A20441C 5211A20441A

5239A20002A

5239A20003A

5421A20091A

5421A20091C

6750U-L025A

INTERNAL 6750U-L025A

4H00982C

5403A20062B

5403A20062C

2520UMBK2EA

2520UMTC2AA 2520UMBK2EA

5901A20010A

5901A20009A

3H02932C

6120AR2194D

0CZZA20001L 6120AR2194D

6711A20052A 6711A20034G 6711A20052A 6711A20052D

REMARK
R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R

46 Room Air Conditioner

LOCATION NO.

DESCRIPTION

130410 130910 135303 135312 135500 147581 147582-1 147582-2 148000 149980 152312 237200 238310 249950 263230 263230 264110 267110 268712 268714 346811 349001 349480 349600 35211A 352111 352115-1 352115-2 352390-1 352390-2 354210 359012 550140 552111 552113 552116 552202 554031 554160 559010 561410 566000 567502 W0CZZ W48602

BASE ASSEMBLY, WELD[SINGLE] CABINET ASSEMBLY, SINGLE GRILLE, INLET GRILLE ASSEMBLY, FRONT(SINGLE) COVER, CONTROL BOX LOUVER, HORIZONTAL LOUVER, VERTICAL LOUVER, VERTICAL BRACE SHROUD FILTER ASSEMBLY, AIR CLEANER PANEL, CONTROL ESCUTCHEON CONTROL BOX ASSEMBLY, SINGLE THERMISTOR ASSEMBLY THERMISTOR ASSEMBLY POWER CORD ASSEMBLY REMOTE CONTROLLER ASSEMBLY PWB(PCB) ASSEMBLY, MAIN(DC) PWB(PCB) ASSEMBLY, MAIN(AC) MOTOR ASSEMBLY, SINGLE DAMPER, VENTILATION ORIFICE MOUNT, MOTOR TUBE ASSEMBLY,SUCTION(OUTDOOR) TUBE, CAPILLARY TUBE FORMED, EVAPORATOR TUBE FORMED, EVAPORATOR AIR GUIDE ASSEMBLY AIR GUIDE ASSEMBLY EVAPORATOR ASSEMBLY, FIRST FAN ASSEMBLY, TURBO ISOLATOR, COMP TUBE ASSEMBLY,CAPILLARY TUBE ASSY, CONDENSER OUT TUBE ASSEMBLY, REVERSING VALVE, REVERSING CONDENSER ASSEMBLY, BENT COMPRESSOR SET FAN ASSY, AXIAL COIL ASSEMBLY, REVERSING VALVE SWITCH, PRESSURE O.L.P CAPACITOR, DRAWING CLAMP, SPRING

Replacement Parts List

PART NO.
LWP1820PEL
3041A20023B 3091AR6057H 3530A10080A 3531A20095A 3550A30122A 4758A30022A 4758A30023A 4758A30023B 4800A20001A 4998A10013A 5231A20008A 3720A20156A 3831A10023C 4995A20194T 6323A20003P 6323A20004E
3H01307F 6711A20034Z 6871A20187B 6871A20167F 4681AR6033Y 4900A20004A 4948A30008A 4960AR1596A
5425AR3147H 5210A21099N 5210A21099P 5239A20002C 5239A20003B 5421A20091D 5901A20009A
4H00982C
5211A30156B 5211A30157G
3A02027G 5403A20013R 2520UMDK2DA 5900AR1330A
3A02028K 6600AG3057B
6120AR2194P
3H02932C

REMARK
R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R

Service Manual 47

LOCATION NO.

DESCRIPTION

130410 130910 135303 135312 135500 146812 147581 147582-1 147582-2 148000 149980 152302 152312 237200 238310 249950 263230 264110 267110 268712 268714 346811 349001 349480 349600 352113 352115-1 352115-2 35211A 352390-1 352390-2 354210 359012 550140 552101 552111 554031 554160 559010 567502 W0CZZ W48602

BASE ASSEMBLY,WELD[SINGLE] CABINET ASSEMBLY,SINGLE GRILLE,INLET GRILLE ASSEMBLY,FRONT(SINGLE) COVER MOTOR ASSEMBLY,SYNC. LOUVER,HORIZONTAL LOUVER,VERTICAL LOUVER,VERTICAL BRACE SHROUD FILTER ASSEMBLY,AIR CLEANER PLASMA FILTER ASS’Y PANEL,CONTROL ESCUTCHEON CONTROL BOX ASSEMBLY,SINGLE THERMISTOR ASSEMBLY POWER CORD ASSEMBLY REMOTE CONTROLLER ASSEMBLY PWB(PCB) ASSEMBLY,MAIN(DC) PWB(PCB) ASSEMBLY,MAIN(AC) MOTOR ASSEMBLY,SINGLE DAMPER,VENTILATION ORIFICE MOUNT,MOTOR TUBE ASSEMBLY,DISCHARGE SINGLE TUBE,EVAPORATOR TUBE,EVAPORATOR TUBE ASSEMBLY,SUCTION(OUTDOOR) AIR GUIDE ASSEMBLY AIR GUIDE ASSEMBLY EVAPORATOR ASSEMBLY,FIRST FAN ASSEMBLY,TURBO ISOLATOR,COMP TUBE,CAPILLARY TUBE ASSEMBLY,CAPILLARY CONDENSER ASSEMBLY,BENT COMPRESSOR SET FAN ASSEMBLY,AXIAL O.L.P CAPACITOR,DRAWING CLAMP,SPRING

PART NO.

LW1804ER
3041A20023D 3091AR6057E 3530A10080A 3531A20095A 3550A20089A
4758A30022A 4758A20042A 4758A20042B 4800A20001A 4998A10013A 5231A20008A
4995A30010M 6323A20004E 6411A20011K 6711A20034G 6871A20323C 6871A20167L 4681A20011M 4900A20004A 4948A30008A 4960AR2895B 5211A30066N 5210A21099A 5210A21099B 5211A20441A 5239A20002A 5239A20003A 5421A20091A 5901A20009A 4H00982C 5210A20492R 5211A30275R 5403A20062B 2520UMKK2AA 5901A20010A 6750U- L016A 6120AR2194F 3H02932C

LWC183PLMDI
3041A20023D 3091AR6057E 3530A10080A 3531A20095A 3550A30122A
4758A30022A 4758A20042A 4758A20042B 4800A20001A 4998A10013A 5231A20008A
3720A10110A 3831A10020M 4995A30010M 6323A20004E 6411A20011K 6711A20034G 6871A20323C 6871A20167L 4681A20011M 4900A20004A 4948A30008A 4960AR2895B 5211A30066N 5210A21099A 5210A21099B 5211A20441A 5239A20002A 5239A20003A 5421A20091A 5901A20009A
4H00982C 5210A20492R 5211A30275R 5403A20062B 2520UMKK2AA 5901A20010A 6750U- L016A 6120AR2194F
3H02932C

REMARK

48 Room Air Conditioner

LOCATION NO.

DESCRIPTION

130410 130910 135303 135312 135500 147581 147582-1 147582-2 148000 149980 152302 237200 238310 249950 263230 264110 267110 268712 268714 346811 349001 349480 349600 352111 352113 352390-1 352390-2 354210 359012 550140 554031 554160 559010 35211A W0CZZ W48602 W52106-1 W52106-2

BASE ASSEMBLY,WELD[SINGLE] CABINET ASSEMBLY,SINGLE GRILLE,INLET GRILLE ASSEMBLY,FRONT(SINGLE) COVER LOUVER,HORIZONTAL LOUVER,VERTICAL LOUVER,VERTICAL BRACE SHROUD FILTER ASSEMBLY,AIR CLEANER PANEL,CONTROL ESCUTCHEON CONTROL BOX ASSEMBLY,SINGLE THERMISTOR ASSEMBLY POWER CORD ASSEMBLY REMOTE CONTROLLER ASSEMBLY PWB(PCB) ASSEMBLY,MAIN(AC) PWB(PCB) ASSEMBLY,MAIN(DC) MOTOR ASSEMBLY,SINGLE DAMPER,VENTILATION ORIFICE MOUNT,MOTOR TUBE,CAPILLARY BEND TUBE ASSEMBLY,DISCHARGE SINGLE AIR GUIDE ASSEMBLY AIR GUIDE ASSEMBLY EVAPORATOR ASSEMBLY,FIRST FAN ASSEMBLY,TURBO ISOLATOR,COMP CONDENSER ASSEMBLY,BENT COMPRESSOR SET FAN ASSEMBLY,AXIAL TUBE ASSEMBLY,SUCTION(OUTDOOR) CAPACITOR,DRAWING CLAMP,SPRING TUBE,FORMED TUBE,FORMED

PART NO.
HBLG183R
3041A20023D 3091AR6057E 3530A10146A 3531A10201A 3550A30122A 4758A30022A 4758A20042A 4758A20042B 4800A20001A 4998A10013A 5231A20008A 3720A10112A 3831A10021F 4995A20194Y 6323A20004E 6411A20011K 6711A90019C 6871A20167D 6871A20325A 4681A20011M 4900A20004A 4948A30008A 4960AR2895B 5210A20492R 5211A30066N 5239A20002A 5239A20003A 5421A20091C 5901A20009A
4H00982C 5403A20062B 2520UMKK2AA 5901A20010A 5211A20441A 6120AR2194F
3H02932C 5210A21099E 5210A21099F

REMARK

Service Manual 49

P/No.: 3828A20140E

Printed in Korea