Blue light Off, Reset button Flashing — Internal boiler fault

What does Blue light Off, Reset button Flashing mean?

The blue indicator light is off, but the reset button is flashing, indicating a general internal fault within the boiler's control system or major components that prevents operation.

• Faulty code plug
• Issue with the control board
• Other undiagnosed internal component failure

Click steps to track your progress.

1. 1

   Press the flashing reset button to attempt to clear the internal fault.

2. 2

   Ensure that the code plug (if applicable and visible) is correctly fitted.

3. 3

   If the fault persists after resetting, contact a qualified engineer as an internal component or the control board may need replacement.