Alarm Z1 Internal compressor driver error 3 — Persistent compressor driver error

What does 5524 mean?

This alarm is triggered if warning 5523 occurs 3 times within 3 hours, or if the warning condition is active for 30 minutes. It signifies a persistent internal error in the inverter affecting the compressor driver.

• Internal error in the inverter.

Click steps to track your progress.

1. 1

   Replace the inverter. This is the recommended action for this persistent error.

2. 2

   Ensure the replacement inverter is compatible with your heat pump model.

3. 3

   Consult the installer guide or support if unsure about the replacement procedure.