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102A/103A/107A/108A Fan motor overload

Alarm conditions:

102A - Supply fan motor overload (Lenze: F_EF), Overheat

103A - Supply fan motor (Lenze: F_PF, F_OF), Overcurrent

107A - Exhaust fan motor overload (Lenze: F_EF), Overheat

108A - Exhaust fan motor (Lenze: F_PF, F_OF), Overcurrent

Possible causes:

  1. Fan failure,
  2. Fan ground fault,
  3. Fan drive failure.

Troubleshooting:

 

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