Alarm 328 - Mains disturbance

What does 328 mean?

The system has detected a mains disturbance, meaning a disruption in the supply voltage, 3 times within 2 hours or continuously for 1 hour. This can affect the stable operation of the Heat Pump.

• Disruption in supply voltage to the Heat Pump.
• Temporary fault in the inverter.

Click steps to track your progress.

1. 1

   Check your home's main electrical panel for tripped circuit breakers or blown fuses.

2. 2

   Ensure the electrical supply to the Heat Pump is stable and free from voltage fluctuations.

3. 3

   If power disturbances are frequent, consider consulting an electrician to check your home's electrical installation.

4. 4

   If the alarm persists, contact a qualified NIBE service technician as there may be an internal issue with the Heat Pump's power handling.