Alarm 334 - Failed compressor starts

What does 334 mean?

The compressor has failed to start when required 3 times within 2 hours. This indicates a problem with the compressor's ability to initiate operation.

• Incorrectly connected compressor cable.
• Defective inverter.
• Internal compressor fault.

Click steps to track your progress.

1. 1

   Check the indoor module/control module display for any other active alarms that might provide more information.

2. 2

   Wait for at least 30 minutes to allow the Heat Pump to reset, then check if the compressor starts.

3. 3

   If the problem persists, contact a qualified NIBE service technician to inspect the compressor cabling and the inverter.