LG L6004R Service Manual

LG L6004R Manual

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  • LG L6004R | Service Manual - Page 1
    http://biz.lgservice.com Window Air Conditioner SVC MANUAL(General) MODEL : Window CAUTION Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel.
  • LG L6004R | Service Manual - Page 2
    Air Conditioner Service Manual CONTENTS Safety Precautions ...3 Operation ...6 Features ...6 Control Locations Function of Controls 6 Troubleshooting Guide...9 Piping System ...9 Troubleshooting Guide...10 Electrical Parts Troubleshooting Guide 12 Room Air Conditioner Voltage Limits 20 2 Window
  • LG L6004R | Service Manual - Page 3
    of injury or damage to properties only. I Meanings of symbols used in this manual are as shown below. Be sure not to do. Be sure to follow the instruction. Dangerous Voltage 1.1 Cautions in Repair SAFETY PRECAUTIONS 1. When servicing the unit, set the main SWITCH to OFF and remove the POWER SUPPLY
  • LG L6004R | Service Manual - Page 4
    under condition that front panel and cabinet are removed. Be sure to earth the air conditioner with an earthing conductor connected to the earthing terminal. Conduct repair works after checking that the refrigerating cycle section has cooled down sufficiently. Otherwise, working on the unit, the hot
  • LG L6004R | Service Manual - Page 5
    cable, or share the same power outlet with other electrical appliances. otherwise, it can cause an electrical shock, excessive heat generation or fire cause personal injury. Do not block the inlet or outlet of air flow. It may cause product failure Check to see if the parts floor. Service Manual 5
  • LG L6004R | Service Manual - Page 6
    chassis for the simple instal- lation and service. • Side air-intake, side cooled-air discharge. • Built-in adjustable THERMOSTAT • setting for average conditions. • OPERATION Off ( 0 ) : Turns the air conditioner off. MED FAN ( ) : Permits the medium fan speed operation without cooling
  • LG L6004R | Service Manual - Page 7
    stop for 1 to 10 minutes. This should not be regarded as trouble. After defrosting, the heating operation begins again. • THERMOSTAT Turn the cooling or heating, but the fan runs continuously whenever the air conditioner is in operation. If the room is too warm, Operation (TYPE2) Service Manual 7
  • LG L6004R | Service Manual - Page 8
    by 2˚C 1 hour later. 6 SIGNAL RECEIVER 7 AUTO SWING The vertical louver swings horizontally by the automatic system and stops when you press the button again. 8 Window Air Conditioner
  • LG L6004R | Service Manual - Page 9
    ROOM AIR HEAT LOAD CONDENSER COILS VAPOR INLET HOT DISCHARGED AIR LIQUID PRESSURE DROP MOTOR OUTSIDE COOLING AIR FOR REFRIGERANT PASS THROUGH COMPRESSOR OIL (LIQUID REFRIGERANT) CAPILLARY TUBE Figure 33 LIQUID OUTLET HIGH PRESSURE VAPOR LIQUID REFRIGERANT LOW PRESSURE VAPOR Service Manual 9
  • LG L6004R | Service Manual - Page 10
    Troubleshooting Guide 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.
  • LG L6004R | Service Manual - Page 11
    Fails to Start Troubleshooting Guide Check of power source. Check of control switch setting. Compressor only fails to start. Drop of power insulation ( ) Replacement of compressor (Motor damaged) Regular but fails to start. Replacement of compressor (locking of rotor, metal). Service Manual 11
  • LG L6004R | Service Manual - Page 12
    Troubleshooting Guide Electrical Parts Troubleshooting Guide LWC1264PAG/PAN/PCG, LWC1264QAG/QAS, LWC126CBHK0, LWC126CGMM0/CBMM1/LWC096CBMK0 Possible Trouble 1 The unit does not operate. Is the 20 of Micom NO DC 5V? YES Exchange Main PCB Ass'y. • Check the PCB pattern. 12 Window Air Conditioner
  • LG L6004R | Service Manual - Page 13
    Possible Trouble 2 The compressor does not operate. Troubleshooting Guide Is setting Temp. set Is the Unit for 3 minutes delay? YES • Wait 3 Minutes. • Exchange MAIN PCB Ass'y. Possible Trouble 3 The compressor always operate. Is the wire connection of NO RY-COMP all right? YES • Check
  • LG L6004R | Service Manual - Page 14
    SW1 NO set to left position? YES Is the voltage No.1 of NO CN-DISP1 of Main PCB Ass'y DC 5V? YES • Reference to OWNER'S MANUAL. • Set the Knob of SW1 to left position. • Check the SW1. • Check the pattern of Main & Display PCB. 14 Window Air Conditioner
  • LG L6004R | Service Manual - Page 15
    YES • Exchange Receiver Ass'y. Troubleshooting Guide • Exchange the battery. ••CChheecckkththeePPCCBBppaattteterrnn.. • Connect connector to CN-DISP2 exactly. Possible Trouble 7 It displays abnormally on . • Connect connector to CN-DISP2 exactly. • Exchange Q12G, Q13G, Q14G. Service Manual 15
  • LG L6004R | Service Manual - Page 16
    Troubleshooting Guide LWC1264PBG/PHG, LWC1264VBS/QBG Possible Trouble 1 The unit does not operate. Is the Trans output power NO AC 220V/240V? YES • Check the Fuse. YES Exchange Main PCB Ass'y. • Exchange IC4, C07. • Connect connector exactly. • Check the PCB pattern. 16 Window Air Conditioner
  • LG L6004R | Service Manual - Page 17
    Possible Trouble 2 The compressor does not operate. Troubleshooting Guide Is setting NO Temp. set the wiring Diagram. • Exchange IC7. • Wait 3 Minutes. • Exchange MAIN PCB Ass'y. Possible Trouble 3 The compressor always operate. Is the wire connection of NO RY-COMP all right? YES • Check
  • LG L6004R | Service Manual - Page 18
    Troubleshooting Guide Possible Trouble 4 FAN does not operate. Is the voltage NO.2 or 3 NO of IC7 DC 5V? YES Is the voltage NO.14 or 15 NO of IC7 0V? YES • Check the RY-High or RY-Low. • Check the wiring diagram. Possible Trouble connector to CN-DISP2 exactly. 18 Window Air Conditioner
  • LG L6004R | Service Manual - Page 19
    the display PCB Ass'y. Troubleshooting Guide • Exchange IC6. • Connect connector to CN-DISP1 exactly. • Exchange TR1, TR2, TR3. Possible Trouble 7 The function of OWNER'S MANUAL. • Set the Knob of SW1 to left position. • Check the SW1. • Check the pattern of Main & Display PCB. Service Manual 19
  • LG L6004R | Service Manual - Page 20
    Troubleshooting Guide Room Air Conditioner Voltage Limits NAME PLATE RATING 220~240±10% MINIMUM 198V MAXIMUM 264V COMPLAINT Fan motor will not run. Fan Check for continuity, refer to the wiring diagram for terminal identification. Replace the switch if circuit is open. 20 Window Air Conditioner
  • LG L6004R | Service Manual - Page 21
    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. Service Manual 21
  • LG L6004R | Service Manual - Page 22
    P/NO : MFL37825901 JANUARY, 2007
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Window Air Conditioner
SVC MANUAL(General)
MODEL : Window
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.