LG M8004R Service Manual

LG M8004R Manual

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  • LG M8004R | Service Manual - Page 1
    http://www.lgservice.com LG LG Room Air Conditioner SERVICE MANUAL MODEL: HBLG8004R,HBLG8004RA4,HBLG8004RB4, HBLG1004R, CL8000ER,M8004R, M8004RY4, M1004R,L8004R,L8004RY4,L1004R CAUTION • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. • ONLY FOR AUTHORIZED SERVICE PERSONNEL.
  • LG M8004R | Service Manual - Page 2
    Air Conditioner Service Manual TABLE OF CONTENTS Safety Precautions...3 Dimensions Troubleshooting Guide ...23 Pipeing System ...23 Troubleshooting Guide ...24 Electrical Parts Troubleshooting Guide ...26 Electrical Parts ...30 Exploded View ...36 Replacement Parts List ...37 2 Room Air Conditioner
  • LG M8004R | Service Manual - Page 3
    to property only. s Meanings of symbols used in this manual are as shown below. Be sure not to do. Be sure to follow the instruction. WARNING Always install the expansion panel(s). Do not place the disassemble or modify products. • It may cause electric shock and failure. Gasolin Service Manual 3
  • LG M8004R | Service Manual - Page 4
    or fire. ON Do not modify power cord length. • It will cause electric shock or fire. Use the air conditioner on a single outlet circuit. Do not share the outlet with other appliances. • It will cause electric shock or fire. Always plug into a grounded outlet. • No grounding may cause electric
  • LG M8004R | Service Manual - Page 5
    product, turn off the the power switch of the main body of appliance. Contact service center after taking the power-plug out from the socket. • It will cause electric shock or failure of machine. Do not clean the air conditioner with water. • Water may enter the unit and degrade the insulation. It
  • LG M8004R | Service Manual - Page 6
    Dimensions Dimensions Symbols Used in this Manual This symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that could cause harm to the air conditioner. NOTICE This symbol indicates special notes. Outside Dimensions 30 (1 3/16") 492 (19 3/8") 42 (1 21/32") 100.3 (3
  • LG M8004R | Service Manual - Page 7
    HBLG8004R(A4/B4) L8004R(Y4)/M8004R(Y4) CL8000ER HBLG1004R L1004R/M1004R .4(WB)** CONDITION OUTDOOR ( C) 35(DB)* 23.9(WB)** REFRIGERANT (R-22) CHARGE 420g(14.8 oz) 410g(14.3 oz ROOM TEMP. CONTROL THERMISTOR AIR DIRECTION CONTROL VERTICAL LOUVER : dry bulb ** WB : wet bulb Service Manual 7
  • LG M8004R | Service Manual - Page 8
    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
  • LG M8004R | Service Manual - Page 9
    Installation How to Install Window Requirements NOTICE All supporting parts should be secured to firm wood, masonry, or metal. 1. TYPE D: 1EA (SEAL STRIP) (Adhesive backed) TYPE E: 1EA (SASH SEAL) (Not adhesive backed) TYPE F: 2EA (GUIDE PANEL) TYPE G: 1EA (SUPPORT BACKET) Service Manual 9
  • LG M8004R | Service Manual - Page 10
    and slide it into the open window. Make sure the bottom guide of the air conditioner drops into the notches of the L bracket. See Figure. 8. IMPORTANT : When the air conditioner drops into the L bracket, the air conditioner will be centered in window opening as shown in Figure. 9. b. While
  • LG M8004R | Service Manual - Page 11
    on the air conditioner, raise the sash, and carefully tilt the air conditioner backward, draining any condensate water. Lift the air conditioner from the window ad remove the sash seal from between the windows. L Bracket Type A Type B Figure 11 Installation Sash Seal (Type F) Service Manual 11
  • LG M8004R | Service Manual - Page 12
    for the simple instal- lation and service. • Low air-intake, top cooled-air discharge. Function of Controls • 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
  • LG M8004R | Service Manual - Page 13
    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 12) 3. Pull the wiring diagram found on page 21 in this manual and on the control box.) Figure 13 Figure 14 Service Manual 13
  • LG M8004R | Service Manual - Page 14
    brace. 5. Remove the brace. 6. Remove the 2 screws that fasten the air guide upper. 7. Remove the air guide upper.(See Figure 15) 8. Remove the 2 screws that fasten the evaporator. by referring to the removal procedure, above. 14 Room Air Conditioner Figure 15 Figure 16 Figure 17 Figure 18
  • LG M8004R | Service Manual - Page 15
    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 the removal procedure, above. Disassembly Figure 19 Figure 20 Figure 21 Service Manual 15
  • LG M8004R | Service Manual - Page 16
    marked hole for ground connection.) 7. If the supply cord of this appliance is damaged, it must be replaced by the special cord. (The air guide. (See Figure 23) 5. Remove the motor. 6. Re-install the components by referring to the removal procedure, above.(See Figure 23) 16 Room Air Conditioner
  • LG M8004R | Service Manual - Page 17
    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
  • LG M8004R | Service Manual - Page 18
    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 a while, and then test the leakage of the pinch-off connection. 18 Room Air Conditioner
  • LG M8004R | Service Manual - Page 19
    , 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
  • LG M8004R | Service Manual - Page 20
    Diagram Schematic Diagram Electronic Control Device 20 Room Air Conditioner CN-TELE SMW200-03 (RD) 33 22 11 12V 12 CN-AC/DC 5V 51581-12(YEONHO) 52044-1245(MOLEX) ANGLE RY-COMP G4A-1A-E-LG ZNR01J SVC271D-14A SVC271D-14A FUSE 250VT3.15A POWER TRANS 1 7 D02D D05D 2 4 D03D D04D + C01D
  • LG M8004R | Service Manual - Page 21
    RD 3 COMP. S C BL AC PCB ASSEMBLY 8 4 OLP WIRING DIAGRAM AIR FILTER ASSEMBLY LOCATION NO. DESCRIPTION 1 MOTOR ASSY 2 CAPACITOR 3 COMPRESSOR 4 OVERLOAD PROTECTOR Service Parts N: Non Service Parts Q'TY PER SET REMARKS 1 S 1 S 1 S 1 S 1 S 1 S 1 S 1 S Service Manual 21
  • LG M8004R | Service Manual - Page 22
    E02J E01J J8 RY-4WAY RY-COMP ASSEMBLY:6871A20417C POWER TRANS FUSE 250V/T3.15A E04J E05J 2. DISPLAY P.C.B. ASSEMBLY PCB:6870A90067C ASSEMBLY:6871A20418A 22 Room Air Conditioner
  • LG M8004R | Service Manual - Page 23
    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 26 LIQUID OUTLET HIGH PRESSURE VAPOR LIQUID REFRIGERANT LOW PRESSURE VAPOR Service Manual 23
  • LG M8004R | Service Manual - Page 24
    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 M8004R | Service Manual - Page 25
    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 25
  • LG M8004R | Service Manual - Page 26
    Troubleshooting Guide Electrical Parts Troubleshooting Guide Possible Trouble 1 The unit does not operate. Is the NO Trans input power AC 115V? YES Is the Trans output power NO Is the voltage No.18 of Micom DC 5V? YES Replace AC PCB Ass'y. • Check the PCB pattern. 26 Room Air Conditioner
  • LG M8004R | Service Manual - Page 27
    Possible Trouble 2 The compressor does not operate. Troubleshooting Guide Is setting Temp. set lower 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
  • LG M8004R | Service Manual - Page 28
    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. 28 Room Air Conditioner
  • LG M8004R | Service Manual - Page 29
    OK? YES • Replace Receiver Ass'y. Troubleshooting Guide • Replace the battery. ••CChheecckkththeePPCCBBppaattteterrnn.. • Connect connector to CN-AC/DC exactly. Possible Trouble 7 It displays abnormally on DC PCB AC/DC exactly. • Replace IC03G (Q01G, Q02G, Q03G for Delux Model). Service Manual 29
  • LG M8004R | Service Manual - Page 30
    Troubleshooting Guide Electrical Parts Possible Trouble 1 The unit does not operate. Is the NO Trans input power AC 115V? YES Is the Trans output power NO about exactly. NO Is the voltage No.40 of Micom DC 5V? YES Replace AC PCB Ass'y. • Check the PCB pattern. 30 Room Air Conditioner
  • LG M8004R | Service Manual - Page 31
    Possible Trouble 2 The compressor does not operate. Troubleshooting Guide Is desired Temp. set lower Is the Unit for 3 minutes delay? 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
  • LG M8004R | Service Manual - Page 32
    Troubleshooting Guide 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 to CN-AC/DC exactly. 32 Room Air Conditioner
  • LG M8004R | Service Manual - Page 33
    the connection of NO CN-AC/DC OK? YES Does the IC03G NO operate normally on AC PCB Ass'y? YES • Replace the DC PCB Ass'y. Troubleshooting Guide • Replace IC01G, IC02G. • Connect connector to CN-AC/DC exactly. • Replace IC03G. Service Manual 33
  • LG M8004R | Service Manual - Page 34
    Troubleshooting Guide COMPLAINT Fan motor will not run. Fan motor runs intermittently Fan motor noise. Compressor will not run, but fan motor runs. are off, refer to wiring diagram for identification, and replace. Check wire locations. If not per wiring diagram, correct. 34 Room Air Conditioner
  • LG M8004R | Service Manual - Page 35
    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
  • LG M8004R | Service Manual - Page 36
    -1 147581 268711-1 237200 159830 135303 135312 349001-1 349001-2 130410 W0CZZ 268711-2 135500 349480 249950 567502 554160 550140 352115 552113 238310 567480 264110 352113 35211A Room Air Conditioner
  • LG M8004R | Service Manual - Page 37
    567502 DESCRIPTION L8004R PART NO(2006) HBLG8004R M8004R REMARK BASE ASSEMBLY,WELD[SINGLE] 3041A10041H 3041A10041H R TUBE ASSEMBLY,CAPILLARY R AIR GUIDE ASSEMBLY 5239A20019A 5239A20019A 5239A20019A R , DRAWING 0CZZA20005B 0CZZA20005B 0CZZA20005B R O.L.P 6750U-L048A R Service Manual 37
  • LG M8004R | Service Manual - Page 38
    SINGLE TUBE ASSEMBLY,DISCHARGE SINGLE TUBE ASSEMBLY,CONDENSER OUT TUBE ASSEMBLY,CAPILLARY AIR GUIDE ASSEMBLY EVAPORATOR ASSEMBLY,FIRST CONDENSER ASSEMBLY,FIRST ANTI-VIBRATION BUSH COMPRESSOR 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 38 Room Air Conditioner
  • LG M8004R | Service Manual - Page 39
    DISCHARGE SINGLE 552111 TUBE ASSEMBLY,CONDENSER OUT 552102 TUBE ASSEMBLY,CAPILLARY 352390 AIR GUIDE ASSEMBLY 354212 EVAPORATOR ASSEMBLY,FIRST 554030 CONDENSER ASSEMBLY,FIRST 550140 ANTI-VIBRATION 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 Service Manual 39
  • LG M8004R | Service Manual - Page 40
    P/NO:3828A20472A February, 2004 Printed in China
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LG
Room
Air Conditioner
SERVICE MANUAL
LG
CAUTION
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
MODEL: HBLG8004R,HBLG8004RA4,HBLG8004RB4,
HBLG1004R, CL8000ER,M8004R, M8004RY4,
M1004R,L8004R
,
L8004RY4,L1004R