LG ATNH09GRLE2 Svc Manual page 140

6.7 Troubleshooting Outdoor Error
CH 62 (Heat sink High Error)
Items
Purpose
Condition for Generation Heat sink temperature reaches the limit level.
Items for checking
Installation
Outdoor Fan
Restoration of
temperature
Replacing PCB
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Prevention of damage of IPM and PSCM/PFCM
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Contents
Sub-items for checking
Whether to shield
Checking for proper working
Checking for proper working
4. Trouble Shooting
LGE Internal Use Only