LG HBLG2350E Service Manual - Page 24
Room Air Conditioner Voltage Limits, Complaint, Cause, Remedy
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ROOM AIR CONDITIONER VOLTAGE LIMITS NAME PLATE RATING MINIMUM 208~230 ± 10% 187V MAXIMUM 253V COMPLAINT Fan motor will not run. Fan motor runs. CAUSE No power Power supply cord Rotary switch Wire disconnected or connection loose Capacitor (Discharge capacitor before testing.) Will not rotate Revolves on overload REMEDY Check voltage at outlet. Correct if none. Check voltage to rotary switch. If none, check power supply cord. Replace cord if circuit is open. Check switch continuity. Refer to wiring diagram for terminal identification. Replace switch if defective. Connect wire. Refer to wiring diagram for terminal identification. Repair or replace loose terminal. Test capacitor. Replace if not within ±10% of manufacturer's rating. Replace if shorted, open, or damaged. Fan blade hitting shroud or blower wheel hitting scroll. Re-align assembly. Units using slinger ring condenser fans must have 0.22~0.25 inch clearance to the base. If necessary, shim up the bottom of the fan motor with mounting screw(s). Check fan motor bearings; if motor shaft will not rotate, replace the motor. Check voltage. See limits on this page. If not within limits, call an electrician. Test capacitor. Check bearings. Does the fan blade rotate freely? If not, replace fan motor. Pay attention to any change from high speed to low speed. If the speed does not change, replace the motor. Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes - 24 - LGE Internal Use Only