Buzzer alarm sounds — An internal alarm has been activated

What does Buzzer alarm mean?

An audible buzzer alarm indicates that the heat pump has detected an internal fault or condition requiring attention. This is a general alarm signal that is preselected at the factory to activate an external relay if connected.

• Various internal system faults
• Operational deviations or critical warnings

Click steps to track your progress.

1. 1

   Check the heat pump display for any specific alarm messages or symbols, especially in Menu 3.1 (INFO) and the alarm log.

2. 2

   Note down any codes or messages displayed, then refer to the relevant troubleshooting section of the manual.

3. 3

   If the alarm persists or recurs after investigating, contact NIBE service for assistance.

4. 4

   If you have an external alarm system, ensure it is correctly configured for the buzzer alarm relay (Menu 5.4).