8 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Main Eco Elite
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Your boiler has lost the ability to accurately measure the temperature of the water circulating through your radiators, so it has safely shut itself down to prevent overheating.
Your boiler's computer module has been identified as the wrong type for your specific heating system, preventing it from operating correctly.
Your boiler is struggling to accurately measure the temperature of the water being heated for your taps and shower, so it has stopped working to prevent overheating.
Your boiler has detected that it is overheating and has automatically switched itself off to prevent damage.
Your boiler has stopped working because the water pressure inside the system has dropped too low to operate safely.
Your boiler is struggling to pump water around your heating system, which is preventing it from heating up your home or water properly.
Your boiler is failing to light because it cannot detect a steady flame or is not receiving enough gas to stay running.
Your boiler has detected that the internal fan responsible for safely venting exhaust gases is not spinning, so it has shut down to prevent unsafe operation.
Not faults — these are normal operating states. Tap to expand.
BoilerFaultCodes