Alarm Z1 Internal compressor driver fault 1 — Repeated compressor driver warning

What does 5395 mean?

This alarm indicates a persistent issue with the compressor's internal driver, triggered if three warnings (code 5394) are registered within three hours, or if the warning is continuously active for 30 minutes.

• Incorrect setting on the rotary encoder/selector P on the Heat Pump's I/O module.
• Electrical fault within the compressor.
• Defective inverter.

Click steps to track your progress.

1. 1

   Verify the P-selector setting on the Heat Pump's I/O module. P=4 for 13 kW 3N~ and P=6 for 13 kW 1N~.

2. 2

   If the setting is correct, contact a qualified technician to inspect the compressor for electrical faults.

3. 3

   Do not attempt to replace major components like the inverter or compressor yourself.