INCH - error message: Charger in fault

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: