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LG Room
Air Conditioner
SERVICE MANUAL
MODEL: HBLG8004R,HBLG8004RA4,HBLG8004RB4,
HBLG1004R, CL8000ER,M8004R, M8004RY4,
M1004R,L8004R , L8004RY4,L1004R
website http://www.lgservice.com
CAUTION
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
LG
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Table of Contents
Troubleshooting
Related Manuals for LG HBLG1004R
Summary of Contents for LG HBLG1004R
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Page 1: Service Manual
LG Room Air Conditioner SERVICE MANUAL MODEL: HBLG8004R,HBLG8004RA4,HBLG8004RB4, HBLG1004R, CL8000ER,M8004R, M8004RY4, M1004R,L8004R , L8004RY4,L1004R website http://www.lgservice.com CAUTION • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. • ONLY FOR AUTHORIZED SERVICE PERSONNEL. -
Page 2: Table Of Contents
Air Conditioner Service Manual TABLE OF CONTENTS Safety Precautions...3 Dimensions ...6 Outside Dimensions ...6 Product Specifications ...7 Installation ...8 Select the Best Location ...8 Installation Check ...8 How to Secure the Drain Pipe ...8 How to Install...9 Operation ...12 Function of Controls ...12 Disassembly ...13... -
Page 3: Safety Precautions
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. This symbol indicates the possibility of death or serious injury. WARNING This symbol indicates the possibility of injury or damage to property only. - Page 4 • 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.
- Page 5 Leaving it damaged could result in the air condi- tioner falling out of the window, creating a safety hazard. Do not clean the air conditioner with water. • Water may enter the unit and degrade the insula- tion. It may cause an electric shock.
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Page 6: Dimensions
This symbol alerts you to hazards that could cause harm to the air conditioner. This symbol indicates special notes. NOTICE Outside Dimensions 492 (19 ") 243.3(9 492 (19 ") 6 Room Air Conditioner 42 (1 ") 100.3 (3 15 16 ") ") 27.5 (1 22.5(0.8 ") 3/32 ") -
Page 7: Product Specifications
DRAIN PIPE OR SPLASHED BY FAN SLINGER DRAIN PIPE OR SPLASHED BY FAN SLINGER 62/28 62/28 62/28 62/28 19 19 CL8000ER CL8000ER CL8000ER CL8000ER HBLG1004R HBLG1004R HBLG1004R HBLG1004R L1004R/M1004R L1004R/M1004R L1004R/M1004R L1004R/M1004R 1ø, 115V, 60Hz 1ø, 115V, 60Hz 1ø, 115V, 60Hz 1ø, 115V, 60Hz... -
Page 8: Installation
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. -
Page 9: How To Install
How to Install Window Requirements All supporting parts should be secured to NOTICE firm wood, masonry, or metal. 1. This unit is designed for installation in standard double hung windows with actual opening widths of 22" to 36". The upper and lower sash must open sufficiently to allow a clear vertical opening of 13"... -
Page 10: Before Installation
BEFORE INSTALLATION 1. Insert the guide panels into the guides of the air conditioner. Fasten the curtains to the unit with screws (TYPE A) as shown Figure. 5. 2. Cut the adhesive-backed seal strip (TYPE D) to the window width. -
Page 11: Removal From Window
Figure. 11. b. Fasten the L bracket using a (TYPE A) screw, as shown in Figure. 11. 6. Window installation of room air conditioner is now completed. See ELECTRICAL DATA for attaching power cord to electrical outlet. NOTICE... -
Page 12: Operation
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. -
Page 13: Disassembly
Disassembly — Before the following disassembly, set the CONTROL BOX 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 12) 3. -
Page 14: Air Handling Parts
6. Shroud 1. Remove the fan. (Refer to section 2.2.2) 2. Remove the shroud. (See Figure 18) 3. Re-install the components by referring to the removal procedure, above. 14 Room Air Conditioner Figure 15 Figure 16 Figure 17 Figure 18... -
Page 15: Electrical Parts
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 19) 4. Remove all the leads from the overload protec- tor. 5. - Page 16 4. Remove the 4 screws that fasten the motor from 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 Figure 22 Figure 23...
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Page 17: Refrigerating Cycle
Refrigerating Cycle 12. Condenser CAUTION: Discharge the refrigerant system using a Freon System. If there is no valve to attach the recovery system, install one (such as a WATCO A-1) before venting the Freon Leave the valve in place after servicing the system. - Page 18 Open valve C. Discharge the line at the manifold connection. 5) The system is now ready for final charging. 18 Room Air Conditioner 6. Recharge as follows : 1) Refrigeration cycle systems are charged from the High-side. If the total charge cannot be put...
- Page 19 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. Figure 25B-Charging Figure 25A-Pulling Vacuum Service Manual 19...
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Page 20: Schematic Diagram
Schematic Diagram Electronic Control Device 20 Room Air Conditioner SEG-d TEST SEG-e /Reset SEG-f SEG-g SLIDE VAref KEY0 Room KEY1 out0 Pipe Option1 out1 Option2 out2... -
Page 21: Wiring Diagram
Wiring Diagram GN/YL MOTOR CAPACITOR Ribbed Plain GN/YL COMP. WIRING DIAGRAM LOCATION MOTOR ASSY CAPACITOR COMPRESSOR OVERLOAD PROTECTOR DC PCB ASSEMBLY AC PCB ASSEMBLY THERMISTOR PLASMA FILTER ASSY CN-AC/DC CN-MOTOR POWER TRANS CN-PWR DC12V FUSE CN-12V 250V/T3.15A CN-HVB RY-COMP AC PCB ASSEMBLY DESCRIPTION CN-AC/DC... -
Page 22: Components Location
Components Location 1. MAIN P.C.B ASSEMBLY R01T CN-HVB Q03T C03T C01D RY-COMP ASSEMBLY:6871A20417C 2. DISPLAY P.C.B. ASSEMBLY 22 Room Air Conditioner Q01T CN-TELE CN-TH2 Q04T QIC02DT R01J C02D C04D C05D POWER TRANS FUSE 250V/T3.15A PCB:6870A90067C ASSEMBLY:6871A20418A CN-MOTOR CN-PWR CN-4WAY ZNR01J... -
Page 23: Troubleshooting Guide
Troubleshooting Guide Piping System CONDENSER COIL MOTOR EVAPORATOR COIL Figure 26 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. EVAPORATOR COILS COMPLETE LIQUID BOIL OFF POINT... -
Page 24: Troubleshooting Guide
Obstruction at air outlet Correct above trouble Check clogging in refrigera- tion circuit. Repair clogging in refrigera- tion circuit. 24 Room Air Conditioner Ineffective Cooling Check outdoor coil (heat exchanger) & the fan operation. Check gas leakage. Repair gas leak. - Page 25 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 Irregular motor resistance ( Irregular motor insulation ( Replacement of compressor (Motor damaged) Fails to Start Improper thermostat setting.
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Page 26: Electrical Parts Troubleshooting Guide
AC and DC Is the voltage No.18 of Micom DC 5V? Replace AC PCB Ass'y. 26 Room Air Conditioner Is shorted the Trans. output? • Check the Fuse. • Check the Fuse. • Check the wiring diagram. • Check the wiring diagram. - Page 27 Troubleshooting Guide The compressor does not operate. Possible Trouble 2 Is setting • Select the setting Temp. to lower Number. Temp. set lower than Room Temp.-0.5 C? Is the voltage No.10 Is the voltage N0.9 of Does the Unit delay of IC01M 0V? IC01M DC 12V? for 3 minutes?
- Page 28 Is the voltage No.3 of CN-AC/DC of AC PCB Ass'y DC 5V? • Reference to OWNER'S MANUAL. 28 Room Air Conditioner • Replace IC01M. • Replace IC01M. • Set the mode key to Energy Saver mode. • Check the Energy Saver mode key.
- Page 29 Remote controller does not operate. Possible Trouble 6 Is the voltage of Battery over 2.3V? Is the voltage No.10 of CN-AC/DC on DC PCB Ass'y DC 5V? Is the connection of CN-AC/DC OK? • Replace Receiver Ass'y. It displays abnormally on DC PCB Ass’y. Possible Trouble 7 Is IC01G good? Is the connection of...
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Page 30: Electrical Parts
AC and DC Is the voltage No.40 of Micom DC 5V? Replace AC PCB Ass'y. 30 Room Air Conditioner Is shorted the Trans. output? • Check the Fuse. • Check the Fuse. • Check the wiring diagram. • Check the wiring diagram. - Page 31 Troubleshooting Guide The compressor does not operate. Possible Trouble 2 Is desired • Select the desired Temp. to lower Number. Temp. set lower than Room Temp.-0.5 C? Is the voltage No.10 Is the voltage N0.9 of Is the Unit for 3 minutes of IC01M 0V? IC01M DC 12V? delay?
- Page 32 CN-AC/DC on AC PCB Ass'y DC 5V? Is the connection of CN-AC/DC OK? • Replace Receiver Ass'y. 32 Room Air Conditioner • Replace IC01M. • Replace IC01M. • Replace the battery. • Check the PCB pattern. • Check the PCB pattern.
- Page 33 It displays abnormally on DC PCB Ass’y. Possible Trouble 6 Are IC01G and IC02G Is the connection of CN-AC/DC OK? Does the IC03G operate normally on AC PCB Ass'y? • Replace the DC PCB Ass'y. • Replace IC01G, IC02G. • Connect connector to CN-AC/DC exactly.
- Page 34 Worn bearings Compressor will not run, Voltage but fan motor runs. Wiring 34 Room Air Conditioner CAUSE Check voltage at outlet. Correct if none. Check voltage to Control Box. If none, check power supply cord. Replace cord if circuit is open.
- Page 35 COMPLAINT Compressor will not run, Thermistor but fan motor runs. Capacitor (Discharge capacitor before servicing.) Compressor Overload Compressor cycles on Voltage overload. Overload Fan motor Compressor cycles on overload. Condenser air flow restric- tion Condenser fins (damaged) Capacitor Compressor cycles on overload.
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Page 36: Exploded View
Exploded View 130910 354210 267110 147582-2 147582-1 147581 159830 135303 268711-1 237200 238310 567480 Room Air Conditioner s n l a u r' a M e n w 148000 346811 359012 W48602 349001-1 349001-2 135312 349480 130410 W0CZZ 135500 268711-2... -
Page 37: Replacement Parts List
Replacement Parts List LOCATION DESCRIPTION 130410 BASE ASSEMBLY,WELD[SINGLE] 130910 CABINET ASSEMBLY,SINGLE 135312 GRILLE ASSEMBLY,FRONT(SINGLE) 135303 GRILLE,INLET 135500 COVER 147581 LOUVER,HORIZONTAL 147582-1 LOUVER,VERTICAL 147582-2 LOUVER,VERTICAL 148000 BRACE 149980 SHROUD 159830 FILTER ASSEMBLY,AIR CLEANER 237200 PANEL,CONTROL 249950 CONTROL BOX ASSEMBLY,SINGLE 268711-1 PWB(PCB) ASSEMBLY,MAIN(AC) 238310 ESCUTCHEON 268711-2... - Page 38 COMPRESSOR SET 559010 FAN, AXIAL 359012 FAN, TURBO 267110 REMOTE CONTROLLER ASSEMBLY W48602 CLAMP, SPRING W0CZZ CAPACITOR, DRAWING 38 Room Air Conditioner PART NO. CL8000ER L1004R HBLG1004R 3041A10041H 3041A10041K 3041A10041K 3091A10056B 3091A10056A 3091A10056A 3531A24016A 3531A24016A 3531A24017A 3530A10238A 3530A10238A 3530A10239A 3550A30226A 3550A30226A...
- Page 39 Replacement Parts List LOCATION DESCRIPTION 130410 BASE ASSEMBLY,WELD[SINGLE] 130910 CABINET ASSEMBLY,SINGLE 135312 GRILLE ASSEMBLY,FRONT(SINGLE) 135313 GRILLE,INLET 135500 COVER 147581 LOUVER,HORIZONTAL 147582-1 LOUVER,VERTICAL 147582-2 LOUVER,VERTICAL 148000 BRACE 159980 SHROUD 152302 FILTER ASSEMBLY,AIR CLEANER 237200 PANEL,CONTROL 249950 CONTROL BOX ASSEMBLY,SINGLE 268712 PWB(PCB) ASSEMBLY,MAIN(AC) 238310 ESCUTCHEON 268714...
- Page 40 February, 2004 P/NO:3828A20472A Printed in China...