NIBE · S2125 Air/Water Heat Pump
The red ERROR LED on the base board (AA2) is continuously lit, indicating an active, continuous alarm that requires attention.
Click steps to track your progress.
Immediately check the indoor module/control module display for specific alarm text and instructions.
Acknowledge the alarm on the indoor module/control module.
Refer to the 'Alarm list' on page 42 for the specific alarm code and troubleshooting steps.
If the alarm persists after following relevant steps, contact a qualified technician.