LG REG-123A Service Manual - Page 24

Troubleshooting Guide Troubleshooting Guide In general, possible trouble is classified in two kinds. The one is called Starting Failure which is caused from an electrical defect, and the other is ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper application. Unit runs but poor cooling. Ineffective Cooling Check cold air circulation for smooth flow. Dirty indoor coil (Heat exchanger) Malfunction of fan Clogged of air filter. Obstruction at air outlet Correct above trouble Check outdoor coil (heat exchanger) & the fan operation. Check gas leakage. Repair gas leak. Replacement of unit if the unit is beyond repair. Check heat load increase. Clean condenser. Not on separate circuit. Check inside gas pressure. Adjusting of refrigerant charged. Malfunction of compressor. Check clogging in refrigeration circuit. Repair clogging in refrigeration circuit. 24 Room Air Conditioner Satisfactory operation with temperature difference of inlet & outlet air ; 44~50°F(7~10°C) Replacement of compressor.