LED: PWR (green) Not lit — Base board is without power

What does Not lit PWR (green) mean?

The green PWR LED on the base board (AA2) is off, indicating that the base board is not receiving power.

• No power supply to the Heat Pump.
• Loose power connection to the base board.
• Blown fuse (F1, F2) on the distribution box (AA2).

Click steps to track your progress.

1. 1

   Check all supply cables to the Heat Pump to ensure they are connected.

2. 2

   Verify the group and main fuses of the accommodation are intact.

3. 3

   Inspect the Heat Pump’s fuses (F1, F2) in the distribution box (AA2) on page 20, and replace if blown (seek qualified electrician if unsure).

4. 4

   If power is confirmed elsewhere but the LED remains off, contact a qualified technician.