Yellow status lamp — Heat pump in emergency (aid) mode

What does Yellow status lamp mean?

The heat pump is currently operating in an emergency or 'aid mode,' indicated by a continuous yellow light. This typically means it's producing heat and/or hot water using supplementary heating (like an immersion heater) because the main compressor might be offline due to an unresolved underlying problem.

• An alarm condition occurred, and 'aid mode' was manually activated to provide temporary heating or hot water.
• The root cause of the initial alarm is still present, but the system is providing limited comfort.

Click steps to track your progress.

1. 1

   Understand that enabling 'aid mode' does not resolve the original alarm; it only provides temporary comfort.

2. 2

   Check the display for any lingering alarm messages or the 'ALARM LOG' (Menu 3.4) for past alarms.

3. 3

   Follow the steps for resolving the specific underlying alarm that led to activating 'aid mode.'

4. 4

   If the original alarm does not reset after troubleshooting, contact your installer for further assistance.

5. 5

   Have your product's 14-digit serial number ready for support.