LG M2400HR Service Manual - Page 26

Troubleshooting guide COMPLAINT CAUSE Compressor cycles on overload. Insufficient cooling or heating Capacitor Wiring Refrigerating system Air filter Exhaust damper door Unit undersized Excessive noise. Blower or fan Auto air-swing fails. Copper tubing Rotary switch. Wiring Synchronous motor. REMEDY Test capacitor. Check the terminals. If loose, repair or replace. Check the system for a restriction. If restricted, clean of replace. Close if open. Determine if the unit is properly sized for the area to be cooled. Check the set screw or clamp. If loose or missing, correct. If the blower or fan is hitting air guide, rearrange the air handling parts. Remove the cabinet and carefully rearrange tubing not to contact cabinet, compressor, shroud, and barrier. Set the knob to HIGH COOL or LOW COOL while rocker switch is ON. Check terminals. If loose, repair or replace. Check the synchronous motor for open circuit. 26 Room Air Conditioner