ERROR (red) LED continuous light - Continuous alarm, active

What does ERROR LED solid mean?

The red ERROR LED on the base board (AA2) is continuously lit. This indicates that a continuous, active alarm is present. This is a more serious fault requiring attention.

• A continuous, active alarm is detected.
• Significant fault in the Heat Pump's operation, sensors, or components.
• Persistent system error.

Click steps to track your progress.

1. 1

   Immediately check the NIBE indoor module/control module display for the specific alarm code and message.

2. 2

   Follow the action instructions provided on the indoor module/control module display.

3. 3

   Turn off the Heat Pump at the main power switch for a few minutes, then restart it to see if the alarm clears.

4. 4

   If the alarm persists, note the exact alarm message and code, then contact a qualified NIBE service technician for diagnosis and repair.