LG ATNH09GRLE2 Svc Manual page 112

6.7 Troubleshooting Outdoor Error
CH 26 (Compressor Starting Failure)
Items
Purpose
Condition for Generation
Installation &
Overload
Compressor
Expected
Causes
PCB
Assembly
Others
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Restarting of the compressor when it does not properly work.
① The compressor current exceeds the standard at initial starting.
② The compressor current does not reach the standard at initial starting.
③ The compressor frequency does not reach the standard at initial
starting.
Closing of SVC valve, under/over charging with refrigerant, infiltration of
water into refrigerant, outdoor device shielding, outdoor fan fault, EEV
valve fault, and sensor fault or assembling error
Open/Short of the coil in the compressor, insulation breaking between
the coil in the compressor and the sash, damage of compressor with
abrasion, and compressor connection fault
IPM parts fault, compressor current detection circuit fault, and DC link
detection circuit fault
Input of abnormal power, IPM connection fault, and power connection
fault
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Contents
4. Trouble Shooting
LGE Internal Use Only