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Service Manual - Page 1
Dry Fan Cool
MODEL : M5403R, M5203R, M5203L, M6003R, WM-6011, LWJ0611PCG, LWC061JGMK1 website: http://www.lgservice.com e-mail: http://www.lgeservice.com/techsup.html
ROOM AIR CONDITIONER SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Service Manual - Page 2
... 13
3.1 SELECT THE BEST LOCATION 13 3.2 HOW TO INSTALL 13
4. The refrigerant is charged at the factory. EXPLODED VIEW 29 7. TROUBLESHOOTING GUIDE 16
4.1 OUTSIDE DIMENSIONS 16 4.2 PIPING SYSTEM 17 4.3 TROUBLESHOOTING GUIDE 18
5. Be sure to read the safety precautions prior to servicing the unit.
1.1 FEATURES
• DESIGNED FOR COOLING ONLY • POWERFUL AND INCREDIBLE COOLING...
Service Manual - Page 3
... SAFETY PRECAUTIONS
1. When servicing, set the POWER of CONTROL BOARD to shock hazards.
1.4 INSULATION RESISTANCE TEST
1. 1.2 SPECIFICATIONS
ITEMS
MODELS
COOLING CAPACITY (BTU/h)
POWER SUPPLY (Phase, V, Hz)
INPUT (W)
OPERATING CURRENT (AMP.)
REFRIGERANT CONTROL
REFRIGERANT CHARGE (R-22)
INSIDE FAN
OUTSIDE FAN
AIR DISCHARGE
CHASSIS
PROTECTOR
M5403R
M5203R
M5203L
M6003R WM-6011...
Service Manual - Page 6
...2
2.1.2 CABINET
1. Disconnect the unit from the bottom. Re-install by placing the tabs in this manual or inside control board.)
Figure 3 Figure 4 Figure 5
-6- ...servicing. Replace the grille by referring to the procedures above . (Refer to the
base pan and condenser. (See Figure 3) 4. Remove the front grille. (Refer to Section 2.1.2) 4.
DISASSEMBLY INSTRUCTIONS
2.1 MECHANICAL PARTS...
Service Manual - Page 11
...service valves. 5. Remove the air guide upper. (Refer to enter the system. Solder service...the vacuum pump.
6-4. Discharge the refrigerant by using a refrigerant
recovery system. 3. When replacing the refrigerating cycle, be closed and left in... B closed .
7-4. Open valve C. Re-install by means of the charge. See figure 23B...-off valve B and allow setting for a while and then ...
Service Manual - Page 13
...
OUTDOORS
width of the condenser. ble hung windows with the bottom about 1/4"). Install the unit slanted slightly so the back is more than the front (about ...60"
Figure 21
ABOUT
/ 1 4
"
Over 20"
3.2 HOW TO INSTALL
3.2.1 WINDOW REQUIREMENTS
INNER SILL
NOTE: All supporting parts should be easily installed in standard dou-
See Figure. 23.
tom of the sash to the ...
Service Manual - Page 18
... which is beyond repair.
Replacement of compressor. Dirty indoor coil (heat exchanger)
Malfunction of inlet & outlet air; 55~59°F (13~15°C)
-18- Clean condenser. Not on separate circuit
Check inside gas pressure.
Check gas leakage.
Obstruction at air outlet. 4.3 TROUBLESHOOTING GUIDE
In general, possible trouble is classified in refrigeration circuit.
Satisfactory...
Service Manual - Page 19
... Start
Check of power source. Check control panel. Drop of compressor (Motor damaged).
-19-
Irregular motor resistance (Ω) Irregular motor insulation (Ω)
Replacement of control panel setting. Capacitor check.
Check of fan motor. Defect of piston, metal.) Replacement of compressor. (Locking of compressor capacitor. Check of circuit breaker and fuse.
Fails to start...
Service Manual - Page 20
ELECTRIC PARTS TROUBLESHOOTING GUIDE:
Possible Trouble 1
• The unit does not operate.
NO • Check the Main P.W.B pattern.
YES
Is output Voltage of IC02D
NO
DC 5V? YES
Is output Voltage ...
Service Manual - Page 21
... RY-Hi or RY-Lo.
• Check the wiring diagram.
-21-
• Exchange IC01M. • Exchange IC01M.
Possible Trouble 2
• The compressor does not operate.
setting set lower than Room
NO
Temp.-0.5°C?
• Set the Temp.
Is the voltage N0.6 of IC01M DC 5V? YES
• Wait 3 Minutes
• Exchange MAIN P.W.B Ass'y. Is...
Service Manual - Page 22
... the Q12G, Q13G, Q14G operate normally
NO
on Display P.W.B Ass'y.
Possible Trouble 6
• It displays abnormally on main P.W.B Ass'y?
YES
NO
Is the connection of
NO
CN-DISP2 all right? ...Possible Trouble 5
• Romote controller does not operate. (only for M-5400, M-6000, M-7000)
...
Service Manual - Page 24
... Overload
REMEDY
If cracked, out of balance, or partially missing, replace it . Check voltage.
if loose, repair or replace the terminal.
See the limits on the preceding page. Check the wire connections; Check the wire connections;
If not at the lowest number, set screw Worn bearings
Compressor will not run, fan motor runs.
Check...
Service Manual - Page 25
... is hitting scroll or barrier, rearrange the air handling parts. Remove the cabinet and carefully rearrange the tubing not to...repair or replace. Check the set screw, or clamp.
COMPLAINT
Compressor cycles on the coil surface, head pressures will increase, causing the compressor to cycle. Excessive noise. Test the capacitor.
Condenser fins (damaged)
Capacitor Wiring Refrigeration...
Service Manual - Page 26
...LOCATION NO. 1 2 3 4 5 6 7 8
DESCRIPTION
POWER CORD ASSEMBLY FAN MOTOR COMPRESSOR DISPLAY P.W.B ASSEMBLY MAIN P.W.B ASSEMBLY THERMISTOR CAPACITOR OWERLOAD PROTECTOR
Q'TY PER SET
1 1 1 1 1 1 1 1
-26- SCHEMATIC DIAGRAM
5.1 CIRCUIT DIAGRAM • MODEL : M5403R, M5203R, M5203L, M6003R, WM-6011, LWJ0611PCG, LWC061JGMK1
POWER INPUT
WH(BL)
BK(BR)
(Ribbed)
(Plain)
BK BK
GN(GN/YL) THERMISTOR...
Service Manual - Page 30
7. SERVICE PARTS LIST
LOCATION NO
DESCRIPTION
130410 130910 135312 135313 137215 149980 152302 238310...IN TUBE ASSY, SUCTION SINGLE AIR GUIDE AIR GUIDE ASSY EVAPORATOR ASSY, FIRST FAN, TURBO ISOLATOR, COMP TUBE ASSY, CAPILLARY CONDENSER ASSY, FIRST COMPRESSOR FAN, PROPELLER O.L.P CAPACITOR, DRAWING CLAMP, SPRING
M5403R
PART NO M5203R
REMARKS M5203L
3041A10011E
R
3091A10020A
R
...
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