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:
- Fan failure,
- Fan ground fault,
- Fan drive failure.
Troubleshooting: