LG ATNH09GRLE2 Svc Manual page 98

6.7 Troubleshooting Outdoor Error
CH 22 (Input of Over Current)
Items
Purpose
Condition for Generation The detected current exceeds the standard.
Installation &
Overload
Expected
Compressor
Causes
PCB
Assembly
Others
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Only for training and service purposes
Prevention of the damage of PCBA, wire, and connector caused by
over-current
Installation fault, closing of SVC valve, under/over charging with refriger-
ant, infiltration of water into refrigerant, outdoor device shielding, outdoor
fan fault, EEV valve fault, and sensor fault or assembling error.
Short between compressor coil and sash, abrasion of compressor, and
short/opening of compressor coil.
Input current detection circuit fault.
Input of low-voltage.
Contents
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4. Trouble Shooting
LGE Internal Use Only