Fan fault (Only on 400 V 30–90kW)

What does 24 mean?

The frequency converter's internal cooling fan is either not running, seized, or improperly mounted, specifically affecting 400 V, 30–90 kW units. This protection function ensures adequate heat dissipation from the drive's components. Continued operation without a functioning fan will inevitably lead to critical overheating and premature failure of the frequency converter.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Measure the electrical resistance of the fan motor to determine if it is open-circuited or short-circuited.

2. 4

   If the fan is confirmed faulty, replace it with an original manufacturer's part. Ensure parameter 14-53 Fan Monitor is correctly configured.