Your boiler's control panel has developed a mechanical or electrical fault with the reset button, meaning it cannot process your commands correctly.

Reset key fault – replace fascia PCB

What causes this fault?

This fault occurs when the reset button on the boiler's control panel becomes physically stuck or experiences an electrical short circuit. It is often caused by the delicate internal switch on the circuit board wearing out or failing after repeated use, leading the boiler to believe the button is being held down permanently.