LG ABNW85GB9A0 Svc Manual page 97

Part 4 Trouble Shooting
6.6 Troubleshooting Outdoor Error
CH 62 (Heat sink High Error)
■ Error diagnosis and countermeasure flow chart
Is Installation
Condition Normal?
Yes
Inv. PCB IGBTM Connection
Condition Normal?
Yes
Is ODU Fan Motor Normal?
Yes
Is Inv. PCB assembly
Normal?
Yes
Recheck Power and
Installation Condition
■ Check Inv. PCB Screw Connection Condition
Check Screw Connection Condition
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Only for training and service purposes
1. Check Pipe Clogging/ Distortion
2. Check Covering (Outdoor/Indoor Unit)
No
3. Check EEV Connector Assemble Condition/Normal Operation
4. Check Refrigerant Pressure
5. Check Power Wire/ Connection Condition
Reassemble or Manage if abnormality Found
No
1. Check Inv. PCB Screw Connection Condition
Reassemble or Manage if abnormality Found
No
1. Check Outdoor Unit Fan Motor Operation or Lock
Reassemble or Manage if abnormality Found
No
1. Reset
Replace Inv. PCB Assembly
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