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LG LWJ0561ACG Service Manual

Lg room air conditioner service manual
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Room Air Conditioner

SERVICE MANUAL

MODEL: LWJ0561ACG
LWJ0561ACP/AAG
CAUTION
- BEFORE SERVICING THE UNIT, READ THE "SAFETY
PRECAUTIONS" IN THIS MANUAL.
- ONLY FOR AUTHORIZED SERVICE PERSONNEL.
http://www.LGEservice.com/techsup.html

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Summary of Contents for LG LWJ0561ACG

  • Page 1: Room Air Conditioner

    WEBSITE http://biz.LGservice.com E-MAIL http://www.LGEservice.com/techsup.html Room Air Conditioner SERVICE MANUAL MODEL: LWJ0561ACG LWJ0561ACP/AAG CAUTION - BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL. - ONLY FOR AUTHORIZED SERVICE PERSONNEL.

  • Page 2: Table Of Contents

    1. PREFACE ... 3 1.1 FEATURES ... 3 1.2 SPECIFICATIONS ... 3 1.3 LOCATIONS OF CONTROLS ... 4 1.4 SAFETY PRECAUTIONS ... 4 1.5 INSULATION RESISTANCE TEST ... 4 2. DISASSEMBLY INSTRUCTIONS 2.1 MECHANICAL PARTS ... 5 2.1.1 FRONT GRILLE ... 5 2.1.2 CABINET...5 2.1.3 CONTROL BOARD ...

  • Page 3: Preface

    This service manual provides various service information, including the mechanical and electrical parts, etc. This room air conditioner was manufactured and assembled under a strict quality control system. The refrigerant is charged at the factory. Be sure to read the safety precautions prior to servicing the unit.

  • Page 4: Locations Of Controls

    Cool Cool Thermostat CAUTION : After switching the air conditioner from Cool to Off ( 0 ) or Fan, wait at least 3 minutes before switching it back to Cool. 1.4 SAFETY PRECAUTIONS 1. When servicing, set the ROTARY SWITCH to Off ( 0 ) and unplug the power cord.

  • Page 5: Disassembly Instructions

    2. DISASSEMBLY INSTRUCTIONS 2.1 MECHANICAL PARTS 2.1.1 FRONT GRILLE 1. Disconnect the unit from the power source. 2. Remove the two knobs by pulling them off. Using a screwdriver, remove the screw that secures the front grille to control board. (See Figure 1) 3.

  • Page 6: Air Handling Parts

    2.2 AIR HANDLING PARTS 2.2.1 AIR GUIDE UPPER 1. Disconnect the unit from the power source. 2. Remove the front grille. (Refer to Section 2.1.1) 3. Remove the cabinet. (Refer to Section 2.1.2) 4. Remove the control board. (Refer to Section 2.1.3) 5.

  • Page 7: Motor

    2.2.3 MOTOR 1. Disconnect the unit from the power source. 2. Remove the front grille. (Refer to Section 2.1.1) 3. Remove the cabinet. (Refer to Section 2.1.2) 4. Remove the control board. (Refer to Section 2.1.3) 5. Remove the air guide upper. (Refer to Section 2.2.1) 6.

  • Page 8: Capacitor

    2.3.3 CAPACITOR 1. Remove the cabinet. (Refer to Section 2.1.2) 2. Remove the control board. (Refer to Section 2.1.3) 3. Discharge the capacitor by placing a 20 K resistor across the capacitor terminals. 4. Remove the screw which fastens the capacitor clamp. 5.

  • Page 9: Evaporator

    2.4.2 EVAPORATOR 1. Remove the cabinet. (Refer to section 2.1.2) 2. Discharge the refrigerant by using a refrigerant recovery system. 3. Remove the air guide upper. (Refer to Section 2.2.1) 4. After discharging the refrigerant completely, unbraze the interconnecting tube at the evaporator connections.
  • Page 10 Equipment needed: Vacuum pump, charging cylinder, manifold gauge, brazing equipment, pinch-off tool capable of making a vapor proof seal, leak detector, tubing cutter, hand tools to remove components and service valve. CONDENSER (HIGH PRESSURE SIDE) EXTERNAL VACUUM PUMP Figure 20A-Pulling Vacuum COMPRESSOR CAPILLARY TUBE —10—...

  • Page 11: Installation

    3. INSTALLATION This air conditioner is designed with a button- down chassis so that it can be installed simply in a window. 3-1. SELECT THE BEST LOCATION 1. To prevent vibration and noise, make sure the unit is installed securely and firmly.

  • Page 12: How To Install

    3.4 HOW TO INSTALL • WHEN USING GASKET Figure 24 1. WINDOW (A - WIDTH, B - HEIGHT) 2. GASKET 3. WALL 487mm 324mm 16" 4" 4. TROUBLE SHOOTING GUIDE 4.1 OUTSIDE DIMENSION (unit : mm) 30mm 0~25mm OVER 240mm (0~1") 16"...

  • Page 13: Piping System

    EVAPORATOR COILS COMPLETE LIQUID BOIL OFF POINT COOLED ROOM AIR HEAT LOAD LIQUID PRESSURE DROP ROOM AIR CONDITIONER CYCLE OF REFRIGERATION VAPOR INLET SUCTION LINE COOL LOW PRESSURE VAPOR OUTSIDE COOLING AIR FOR REFRIGERANT PASS THROUGH MOTOR...

  • Page 14: Troubleshooting Guide

    4.3 TROUBLESHOOTING GUIDE In general, possible trouble is classified in two kinds. The one is called Starting Failure which is caused from an electrical defect. The other is Ineffective Air Conditioning caused from a defect in the refrigeration circuit and improper application. Unit is running but cooling is ineffective.
  • Page 15 Check of power source. Check of control switch setting. Compressor fails only to start. Drop of power voltage. Defect of compressor capacitor. Capacitor check. Replacement. Irregular motor resistance ( ) Irregular motor insulation ( ) Replacement of compressor (Motor damaged). Fails to Start Improper thermostat setting...
  • Page 16 ROOM AIR CONDITIONER VOLTAGE LIMITS NAME PLATE RATING 220V~240V COMPLAINT Fan motor will not run. No power Power supply cord Rotary switch Wire disconnected or connection loose Capacitor. (Discharge capacitor before testing.) Will not rotate Fan motor runs. Revolves on overload.
  • Page 17 COMPLAINT Fan motor noise. Blower Loose set screw Worn bearings Compressor will not run, Voltage fan motor runs. Wiring Rotary Switch Thermostat Capacitor (discharge capacitor before servicing.) Compressor Overload Compressor cycles on Voltage overload. Overload CAUSE If cracked, out of balance, or partially missing, replace it.
  • Page 18 COMPLAINT Compressor cycles on Fan motor overload Condenser air flow restriction Condenser fins (damaged) Capacitor Wiring Refrigeration system Insufficient cooling. Air filter Unit undersized Excessive noise. Blower or fan Copper tubing CAUSE If not running, determine the cause. Replace if required.

  • Page 19: Schematic Diagram

    5. SCHEMATIC DIAGRAM 5-1. CIRCUIT DIAGRAM • MODEL : LWJ0561ACG ROTARY SWITCH WIRING DIAGRAM REF. NO POWER INPUT BK(BR) (Plain) OR(BR) MOTOR OR(BR) COMP. THERMOSTAT DESCRIPTION & NAME POWER CORD ASSY FAN MOTOR COMPRESSOR ROTARY SWITCH THERMOSTAT CAPACITOR OVERLOAD PROTECTOR —19—...
  • Page 20 • MODEL : LWJ0561ACP/AAG REF. NO DESCRIPTION & NAME POWER CORD ASSY FAN MOTOR COMPRESSOR ROTARY SWITCH THERMOSTAT CAPACITOR OVERLOAD PROTECTOR —20— Q'TY...

  • Page 21: Exploded View

    6. EXPLODED VIEW 149410 135312 349480 354210 W48602 359012 264110 266003 269310 W0CZZ 159900-2 145200 159900-1 152302 135313 352380 346811 352390 249950 135510 550140 —21— 130910 559011 W48602 149980 130410 552101 552111 352115 567502 554160 554030 352113 35211A...

  • Page 22: Service Parts List

    W48602 CLAMP, SPRING NOTE) Please ensure GCSC since these parts may be changed depending upon the buyer's request. (GCSC WEBSITE http://biz@LGservice.com) PART No. LWJ0561ACG LWJ0561ACP LWJ0561AAG 3041A10011G 3041A10011G 3041A10011G 3091A10020B 3091A10020B 3530AR1616A 3530AR1617A 3530AR1616A 3550A20026A 3550A20026A 4520AR3191A 4520AR3191A 4800A30003A 4941AR7315A 4941AR7315A 4941AR7315A...
  • Page 23 April, 2002 P/NO:3828A20118B Printed in Korea...

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