23

Internal fan fault

Danfoss · VLT AutomationDrive FC 301/302

What does 23 mean?

The drive's protective function has detected an issue with the internal fan, indicating it is not running or improperly mounted. For DC fans, this occurs if no feedback is received from its sensor when commanded to run. For AC fans, the voltage supply is monitored.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Inspect the sensors on the control card related to fan feedback.

Source: Danfoss VLT AutomationDrive FC 301/302
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