Alarm conditions:
100A - Supply fan drive (frequency inverter) overload (Lenze: F_AF fault). Too high temperature in frequency inverter circuit.
104A - Exhaust fan drive (frequency inverter) overload (Lenze: F_AF fault). Too high temperature in frequency inverter circuit.
Possible causes:
- Too high load on fan drive
- Fan drive failure
Troubleshooting:
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