7 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
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Your boiler has automatically shut down because it detected dangerously high temperatures inside the unit.
Your boiler is currently switched off or not receiving power, so it cannot provide heating or hot water.
Your boiler is temporarily unable to accurately measure the temperature of the central heating water because of a faulty or disconnected sensor.
Your boiler has stopped working because it cannot detect that the internal fan, which safely removes combustion gases, is operating correctly.
Your boiler is failing to properly detect the burner flame, so it has safely shut down to prevent any unburned gas from building up.
Your boiler has stopped working because it failed to light the flame, and it has locked itself for safety with a red light showing.
Your boiler has temporarily stopped working because it has detected a problem with the water flow or an internal safety thermostat has been triggered.
BoilerFaultCodes