LG ATNH09GRLE2 Svc Manual page 79

4. Trouble Shooting
6.7 Troubleshooting Outdoor Error
CH 21 (DC Peak / Comp IPM Fault)
How to check IPM IGBT (Diode Mode)
Sequence of
Measurement
Measurement
1
2
3
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Only for training and service purposes
Normal
Standards
P-U 0.4V~0.6V
P-V 0.4V~0.6V
P-W 0.4V~0.6V
Sequence of
Measurement
Measurement
1
2
3
- 79 -
Normal
Standards
U-Nu 0.4V~0.6V
V-Nv 0.4V~0.6V
W-Nw 0.4V~0.6V
LGE Internal Use Only