Cause : Fan speed feedback error comes when there is an issue with the feedback signal from the fan speed sensor to the drive. This error can be caused by various factors, including sensor faults, wiring issues, configuration problems, or drive parameter settings.

Error in fan speed feedback. See the auxiliary code for node(s) giving faulty feedback indication for fan(s).

1. Auxiliary code is a bit word where bit 0 indicates CIO-01 module assigned to node ID 1.
2. Check fan feedback.
3. Verify the identification run results against the tachometer pulse count of the fan feedback.