17 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Potterton Kingfisher CF
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Your boiler is failing to ignite because it is not receiving the gas it needs to start the flame.
Your boiler is struggling to ignite the small starting flame because the ignition control hasn't been held down long enough to establish a gas flow.
Your boiler is unable to start up because the small flame that acts as a trigger is being blocked from lighting, which means the boiler cannot heat your home or water.
Your boiler's pilot light is failing to spark, which means it cannot ignite to start the heating and hot water process.
Your boiler is failing to start because it cannot create the spark or flame needed to ignite its main burner.
Your boiler has stopped working because the pilot light won't ignite and a safety device has prevented it from starting to prevent overheating.
Your boiler's pilot light isn't staying lit because the gas supply isn't being held open long enough during the ignition process.
Your boiler is failing to stay lit because the safety sensor that detects the pilot flame has lost its connection, preventing the gas from staying on.
Your boiler's pilot light is failing to stay on, which prevents the main heating system from starting up.
Your boiler's pilot light is struggling to stay lit, which prevents the main system from firing up to provide your heating and hot water.
Your boiler's pilot light has gone out and refuses to stay lit, meaning the system cannot ignite to provide heat or hot water.
Your boiler is not heating up because the temperature dial is turned down too low or switched to the off position.
Your boiler is staying in its standby mode because your home's thermostat or programmer is not currently sending a signal to ask for heating or hot water.
Your boiler's pilot light is lit, but the main burner is failing to ignite, meaning you currently have no heating or hot water.
Your boiler recognizes the pilot light is on, but it is failing to trigger the main heating flame because it is struggling to accurately detect your home's temperature.
Your boiler's small pilot flame is lit, but the main burner is unable to ignite, meaning you have no heating or hot water.
Your boiler is failing to switch off when the water reaches the correct temperature, meaning the system is running constantly and overheating.
BoilerFaultCodes