8 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
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Your boiler has detected a communication issue between its internal parts, meaning it has safely switched itself off to prevent further errors.
Your boiler has detected a communication error between its internal electronic parts, causing it to shut down for safety.
Your boiler has lost the chemical signal needed to release gas, so it has safely shut itself down to prevent any unsafe operation.
Your boiler has stopped working because the water pressure inside the heating system has dropped too low to operate safely.
Your boiler's temperature sensor is providing incorrect readings, so it has safely shut down to prevent overheating.
Your boiler has detected that the water inside the heating system has become too hot and has automatically shut down to prevent damage.
Your boiler is failing to detect the expected temperature rise after the flame ignites, which means it cannot safely heat your water or radiators.
Your boiler is trying to start but the flame is not catching, meaning you currently have no heating or hot water.
BoilerFaultCodes