5524 - Bosch Heat Pump Z1 PFC overcurrent on compressor driver alarm

What does 5524 mean?

This alarm indicates an overcurrent issue in the Power Factor Correction (PFC) part of the compressor driver in Bosch Heat Pump zone 1. It activates after 3 warnings in 3 hours, or if a warning is active for 30 minutes.

• An internal fault within the inverter component.

Click steps to track your progress.

1. 1

   Reset the Heat Pump by cycling its power at the main breaker.

2. 2

   Check the main power supply to the Heat Pump for any signs of instability or unusual electrical activity.

3. 3

   If the alarm persists, contact a qualified technician to inspect or replace the inverter.