Technical description
This feature is not required on this appliance
What causes this fault?
This fault occurs when the boiler's internal computer becomes confused and attempts to monitor a component or feature that doesn't exist on this specific model. It is usually triggered by a temporary electronic glitch or the circuit board being programmed with the wrong software settings during a repair or power surge.
DIY fix possible
Locate the reset button on the front control panel.Press and hold the reset button for 2 seconds.Wait for the boiler to restart and check if the code has cleared.
Find a Gas Safe engineer
Search the official register →