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Service Manual - Page 1
website 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.
Service Manual - Page 2
... Parts...13 Air handling Parts...14 Electrical Parts ...15 Refrigerating Cycle...17 Schematic Diagram...20 Electronic Control Device...20 Wiring Diagram...21 Components Location ...22 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
Service Manual - Page 4
...out the power plug.
• It will cause electric shock or fire.
Use the air conditioner on a single outlet circuit.
ON
Do not damage or use the socket if it ...fire, and burn.
4 Room Air Conditioner Safety Precautions
Plug in damp environment.
• It may cause fire and electric • It may cause electric shock.
Do not operate with other appliances.
• It will cause ...
Service Manual - Page 5
... metal parts of the window, creating a safety hazard. Leaving it must be repaired or replaced immediately....Service Manual 5
Be cautious not to touch the sharp edges when installing. • It may cause an electric shock. Contact service center after taking the power-plug out from the socket.
• It will cause electric shock or failure of appliance. Do not clean the air conditioner...
Service Manual - Page 8
... slanted slightly so the back is finished. 1. ABOUT
/ 1 4
"
Over 20"
Figure 1
Installation Check
The setting conditions must extend outward for Electric Heater Model) 3. Installation
Installation
Select the Best Location
1. To prevent vibration and noise, make sure the air conditioner is installed securely. 4 Avoid placing furniture or draperies in the power cord. INSIDE
3. To...
Service Manual - Page 11
.... 11.
5. L Bracket Type A
Type B
Figure 11
Installation
Sash Seal (Type F)
Service Manual 11 See ELECTRICAL DATA for reinstallation later. keeping a firm grip on the air conditioner, raise the sash, and carefully tilt the air conditioner backward, draining any condensate water. INSTALL THE SASH SEAL AND SASH LOCK a. Window installation of the guide panels, and save for attaching power cord to...
Service Manual - Page 16
...)
16 Room Air Conditioner
Figure 22 Figure 23 Remove the motor. 6. Open the top cover from
the air guide. (See Figure 23) 5. Pull out the power cord. 6. Disconnect two leads from the control box.
(See Figure 22) 4. Disconnect the front panel from the capacitor and
relay. 5. If the supply cord of this appliance is damaged...
Service Manual - Page 18
... Room Air Conditioner When replacing the refrigeration cycle,...set for 20 to valve C by means of the charge is in figure 25B.
and c.
A rise in pressure would indicate a possible leak or moisture remaining in place after servicing...Service valves. 5. Disassembly
NOTICE
- With valve C open . 4.
Replacement of vaccum is now pulling through the access valve which you installed...
Service Manual - Page 20
...Control Device
20 Room Air Conditioner
CN-TELE
SMW200-03...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...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
...
Service Manual - Page 23
... 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 Troubleshooting Guide
Piping System
Troubleshooting Guide
CONDENSER COIL FAN
MOTOR
EVAPORATOR COIL
CAPILLARY...
Service Manual - Page 24
...Check cold air circulation for smooth flow. Repair gas leak.
Troubleshooting Guide
Troubleshooting Guide
In general, possible trouble is classified in the refrigeration circuit and improper application. Dirty indoor coil (Heat exchanger)
Malfunction of fan Clogged of refrigerant charged. Check gas leakage.
Check clogging in refrigeration circuit.
24 Room Air Conditioner
Satisfactory...
Service Manual - Page 25
...of power voltage. Improper wiring.
Fails to Start
Troubleshooting Guide
Check of control switch.
Replacement
Improper thermostat setting.
Irregular motor insulation ( ). Service Manual 25 Gas leakage of feeler bulb of thermostat
Check of power source. Irregular motor resistance ( )
Irregular motor insulation ( )
Replacement of rotor, metal). Capacitor check. Fan only fails...
Service Manual - Page 28
...
CN-AC/DC of Energy Saver does not operate. Troubleshooting Guide
Possible Trouble 4
FAN does not operate. Is the mode
NO
key pushed once more from
cool mode?
YES
Is the voltage NO.16 or 15 or 13 NO of AC & DC PCB.
28 Room Air Conditioner YES • Check the RY-Hi or
RY...
Service Manual - Page 30
... power
NO
about AC 14V?
YES
Replace AC PCB Ass'y.
• Check the PCB pattern.
30 Room Air Conditioner
YES
••CChheecckktthheeFFuussee.. ••CChheecckkththeewwiriirninggddiaiaggraramm. .
Is the
NO
Trans input power AC 115V? NO
• Check the AC PCB pattern. Troubleshooting Guide
Electrical Parts
Possible Trouble 1
The unit does not operate.
Is...
Service Manual - Page 32
... Receiver Ass'y.
• Replace IC01M. • Replace IC01M.
• Replace the battery. ••CChheecckk tthheePPCCBBpaptatettrenr.n. • Connect connector to
CN-AC/DC exactly.
32 Room Air Conditioner
Possible Trouble 5
Remote controller does not operate. YES
Is the voltage No.10
NO
of
NO
CN-AC/DC OK? Troubleshooting Guide
Possible Trouble 4
FAN does not operate...
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