13 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
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Your boiler has detected a problem with its primary temperature sensor and has shut down as a safety precaution to prevent overheating.
Your boiler has stopped working because it is unable to accurately measure the temperature of the water inside the system.
Your boiler has detected a problem with its primary temperature sensor and has shut down as a safety precaution to prevent overheating.
Your boiler has detected a problem with its primary temperature sensor and has shut down as a safety precaution to prevent overheating.
Your boiler has detected a problem with its primary temperature sensor and has shut down as a safety precaution to prevent overheating.
Your boiler has detected a problem with its internal temperature sensors, which means it cannot accurately monitor the water temperature and has stopped working for safety.
Your boiler has detected a problem with its internal temperature sensors, which means it cannot accurately monitor the water temperature and has stopped working for safety.
Your boiler has detected an issue with one of its internal temperature sensors, which means it has stopped working to prevent potential overheating.
Your boiler has detected a problem with its internal temperature sensors, which means it cannot accurately monitor the water temperature and has stopped working for safety.
Your boiler has detected a problem with its internal temperature sensors, which means it cannot accurately monitor the water temperature and has stopped working for safety.
Your boiler has lost connection to its outdoor thermometer because the wiring has developed a fault or been damaged.
Your boiler's fan is failing to maintain a steady speed, which prevents the system from safely drawing in air and exhausting gases.
Your boiler's internal control board cannot safely operate the gas valve, preventing the system from firing up for heating or hot water.
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BoilerFaultCodes