Blue light flashing — Possible fault alert

What does Blue light flashing mean?

The blue heat requirement demand light, even if normally deactivated, will flash when the boiler detects a possible fault. This serves as a general alert that there is an issue needing attention.

• General internal boiler malfunction
• Problem with heating or hot water demand
• Underlying system error not displaying a specific code

Click steps to track your progress.

1. 1

   Check the boiler display for any specific error codes or messages that might be present.

2. 2

   Try resetting the boiler by turning off its power supply at the mains for 30 seconds, then restore power.

3. 3

   If the blue light continues to flash or the boiler does not operate correctly, contact a qualified heating engineer for diagnosis.