Troubleshooting Guide - LG LC8000 Svc Manual

4.3 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.
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 problem
Check clogging in refrigera-
tion system.
Repair clogging in refrigera-
tion system.
Copyright ©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Ineffective Cooling
Check outdoor coil
(heat exchanger) & the fan
operation.
Check gas leakage.
Repair gas leak.
Replace of unit if the
unit is beyond repair.
Satisfactory operation with
temperature difference of
inlet & outlet air ;
44~50°F(7~10°C)
- 17 -
Check heat load
increase.
Clean condenser.
Not on separate circuit.
Check inside gas
pressure.
Adjusting of refrigerant
charge.
Malfunction of compressor.
Replacement of
compressor.
LGE Internal Use Only