Cycle Troubleshooting Guide - LG General Wall Mounted-Inverter Type Svc Manual

5. Cycle Troubleshooting Guide

Trouble analysis
1. Check temperature difference between intake and discharge air, and operating current.
Temp. Difference
Operating Current
NOTICE
Temperature difference between intake and discharge air depends on room air humidity. When the room air
humidity is relatively higher, temperature difference is smaller. When the room air humidity is relatively lower
temperature difference is larger.
Temp. difference : approx. 0°C(1°F)
Current : less than 80% of
rated current
Temp. difference : approx. 8°C(16°F)
Current : less than 80% of
rated current
Temp. difference : less than 8°C(16°F)
Current : near the rated
current
Temp. difference : over 8°C(16°F)
Part 4 Trouble Shooting
All amount of refrigerant leaked out.
Check refrigeration cycle.
Refrigerant leakage
Clog of refrigeration cycle
Defective compressor
Excessive amount of refrigerant
Normal
Service Manual 39