Code 39-58 VFD System Lockout - Fan Motor Fail

What does 39-58 mean?

The system's Variable Frequency Drive (VFD) is not receiving feedback from the fan motor, or there's a large speed error. The system is locked out for 30 minutes.

• Internal electrical damage within the fan motor preventing feedback.
• Severe speed error between commanded and actual fan speed.
• Failing fan motor.
• Issue with the VFD control unit.

Click steps to track your progress.

1. 1

   Turn off power to the unit at the circuit breaker and wait 30 seconds before turning it back on.

2. 2

   Check all wiring connections to the fan motor and the VFD for any signs of damage or looseness.

3. 3

   Listen for any unusual sounds coming from the fan motor that might suggest internal damage.

4. 4

   If the fault persists, it likely indicates a need to replace the fan motor, or potentially the VFD, by a qualified technician.