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Summary of Contents for LG R1402
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Page 1: Room Air Conditioner
Internal Use Only http://biz.lgservice.com Room Air Conditioner SVC MANUAL(General) MODEL : R1402 / R1802 / R1801H / WR-1820 LWN2120BCP LWM1822BCG CAUTION Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel. -
Page 2: Table Of Contents
4. The value should be over 1MΩ. exposed to shock hazards. - 2 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 3: Specifications
26 x 16 x 26 27 /32 9 /16 (W x H x D) (mm) 660 x 428 x 675 - 3 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... - Page 4 26 x 16 x 26 OUTSIDE DIMENSION (inch) 660 x 428 x 675 (W x H x D) (mm) - 4 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
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Page 5: Features
ON : Air swing is operated while OPERATION knob is set to the COOL position. OFF :Stops the operation of air swing. - 5 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... - Page 6 HEAT after the cooling season is over. This odor, caused by fine dust particles on the heater, will disappear quickly. - 6 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
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Page 7: Disassembly Instructions
(Refer to the circuit diagram found on page 26~28 Figure 3 in this manual and on the control box.) - 7 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 8: Air Handling Parts
(See Fig. 7) 10. Re-install the components by referring to the Figure 6 removal procedure, above. Figure 7 - 8 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 9: Fan
6. Remove the compressor. (See Fig. 11) 7. Re-instill the components by referring to the removal procedure, above. Figure 11 - 9 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 10: Capacitor
5. Remove the thermostat. (See Fig. 14) 6. Re-install the components by referring to the removal procedure, above. Figure 14 - 10 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 11: Rotary Switch
5. Remove the 2 screws which fasten the synchronous motor. (See Fig. 16) 6. Re-install the components by referring to the removal procedure, above. Figure 16 - 11 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 12: Refrigeration Cycle
4. Remove the capillary tube. 5. Re-install the components by referring to notes. Figure 18 - 12 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... - Page 13 Open valve C. Discharge the line at the manifold connection. 5) The system is now ready for final charging. - 13 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 14 Leak detector, Tubing cutter, Hand Tools to remove components, Service valve. Figure 19A-Pulling Vacuum Figure 19B-Charging - 14 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
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Page 15: Installation
5. Insert the filter and attach the front grille to the cabinet. B. IF YOU WANT TO PULL OUT THE FILTER DOWNWARD; The grille is already designed for that way. - 15 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 16: Window Requirements
Support bracket(2) Type A (14) Type B (7) Type C (5) Type D (2) Carriage Bolt (2) Lock Nut (4) - 16 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 17: Suggested Tool Requirements
8. Fasten the curtains to the unit with 10 screws (Type A) at Top retainer bar both sides. Screw (Type A) Screw(Type A) Frame guide Figure 23 - 17 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 18: Cabinet Installation
(Type B) through the cabinet into window stool. 2. The cabinet should be installed with a very slight tilt downward toward the outside. Figure 28 - 18 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... - Page 19 (See Fig. 33) 12. Window installation of room air conditioner is now Figure 33 completed. Figure 34 - 19 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
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Page 20: Outside Dimensions
LIQUID LIQUID OUTLET PRESSURE DROP (LIQUID REFRIGERANT) HIGH PRESSURE VAPOR LIQUID PEFRIGERANT CAPILLARY TUBE LOW PRESSURE VAPOR Figure 35 - 20 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... -
Page 21: Troubleshooting Guide
Satisfactory operation with temperature difference of Repair clogging in inlet & outlet air ; 7~10°C refrigeration circuit. - 21 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... - Page 22 Regular but fails to start Irregular motor insulation ( ) Replacement of compressor (locking of rotor, metal) Replacement of compressor (Motor damaged) - 22 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 23 If the motor hums or noise appears to be internal while running, replace motor. —23— - 23 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 24 (damaged) causing the compressor to cycle. Straighten the fins or replace the coil. - 24 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 25 ON. Wiring Check terminals. If loose, repair or replace. Synchronous motor. Check the synchronous motor for open circuit. - 25 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
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Page 26: Schematic Diagram
Q'TY PER SET REMARKS POWER CORD ROTARY SWITCH FAN MOTOR CAPACITOR THERMOSTAT COMPRESSOR OVERLOAD PROTECTOR TERMINAL BLOCK SYNCHRONOUS MOTOR - 26 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... - Page 27 3854AR2206Y DESCRIPTION LOCATION NO. Q'TY PER SET REMARKS POWER CORD ROTARY SWITCH FAN MOTOR CAPACITOR THERMOSTAT COMPRESSOR SYNCHRONOUS MOTOR - 27 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
- Page 28 Q'TY PER SET REMARKS POWER CORD ROTARY SWITCH FAN MOTOR CAPACITOR THERMOSTAT OVERLOAD PROTECTOR COMPRESSOR ELECTRIC HEATER SYNCHRONOUS MOTOR - 28 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
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Page 29: Exploded View
6. EXPLODED VIEW (MECHANICAL) LWM1836BCG/BAN - 29 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes... - Page 30 MARCH, 2008 P/NO : 3828AR3735R...
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