This error is displayed from version 1.9.2 on and means that N and L are switched.
To prevent this please follow Etrel INCH electrical Installation Guide and sticker inside INCH:
3 phase connection:
- correct:
- wrong (L1 and N switched):
- wrong (L2 and N switched):
- wrong (L3 and N switched):
Please measure between each phase and ground. Results:
1 phase connection:
- correct:
- wrong (switched L1 and N):
Please measure between phase and ground. Result:
