No blue Operation/Fault Indicator demand light — No heat demand or power issue.

What does No blue light mean?

The blue light, which normally illuminates when there is a central heating or hot water demand, is not on. This could be due to a brief power interruption or the light being deactivated.

• A momentary power failure occurred.
• The heat requirement demand operation light has been deactivated by an installer.

Click steps to track your progress.

1. 1

   Disconnect the appliance's power supply.

2. 2

   Wait a few seconds, then reconnect the power supply.

3. 3

   If the issue persists and you believe there should be a heat demand, contact your installer to reactivate the blue light.