Code 81-53 VFD System Lockout - PFC

What does 81-53 mean?

The Power Factor Correction (PFC) circuit in the VFD exceeded its peak current limit multiple times, leading to a system lockout for 4 hours. A power cycle can clear the timer.

• High current situation due to VFD damage.
• High current situation due to compressor damage.
• Failed reactor component in the PFC circuit.

Click steps to track your progress.

1. 1

   Cycle power to the system by turning off the circuit breaker for 30 seconds and then turning it back on to clear the lockout timer.

2. 2

   Observe if the fault clears and the system resumes normal operation.

3. 3

   If the fault reoccurs frequently, it suggests a persistent high current problem.

4. 4

   A professional technician should inspect the reactors and other VFD components for damage.