23 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
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Your boiler has stopped working because an internal temperature sensor is reporting an error and needs to be checked.
Your boiler has detected that the water inside is getting too hot and has shut down to prevent damage.
Your boiler has sensed that the hot water is getting too hot and has shut down as a safety precaution.
Your boiler has sensed that the exhaust gases are getting too hot and has shut down to prevent internal damage.
Your boiler is trying to ignite but cannot establish a flame, meaning you have no heating or hot water.
Your boiler started to heat up but the flame went out unexpectedly, causing the system to stop working for safety.
Your boiler thinks it sees a flame even when the gas should be turned off, which prevents it from starting up safely.
Your boiler is failing to detect a steady flame, which means it cannot stay on safely to provide heating or hot water.
Your boiler has stopped working because the fan that clears exhaust gases from the unit is not spinning at the correct speed.
Your boiler has detected an internal error within its main electronic brain, causing it to stop running for safety.
Your boiler has detected a problem with its internal temperature sensor, which means it cannot safely monitor the water temperature and has stopped working to prevent damage.
Your boiler has detected a problem with its internal temperature sensor, which means it cannot safely monitor the water temperature and has stopped working to prevent damage.
Your boiler has stopped working because its internal temperature sensor is reporting an error, meaning it can no longer monitor heat levels safely.
Your boiler has detected that a temperature sensor is not attached correctly or has become loose, preventing the system from heating up safely.
Your boiler has stopped working because its internal temperature sensor is not positioned or connected correctly, preventing it from heating your home safely.
Your boiler has detected that a vital temperature sensor is incorrectly fitted or has become detached, preventing the system from monitoring heat levels safely.
Your boiler is unable to safely breathe because the pipes that bring in fresh air or take away exhaust fumes are blocked or restricted.
Your boiler has stopped working because its internal computer and burner control system are failing to communicate correctly.
Your boiler has lost connection with the sensor that measures the temperature outside, meaning it doesn't know how hard it needs to work to heat your home.
Your boiler's computer system is having trouble completing a reset or start-up sequence and needs a technician to check it.
Your boiler is unable to control the gas flow correctly, meaning it cannot ignite to provide heating or hot water.
Your boiler has stopped working because one of its internal temperature sensors is providing an incorrect reading or has developed a fault.
Your boiler has stopped working because one of its internal temperature sensors is providing an incorrect reading or has failed.
BoilerFaultCodes