13 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
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Your boiler has automatically shut down because the water inside it has become dangerously hot.
Your boiler's heating temperature sensor has failed, which means the system cannot accurately measure how hot the water is getting.
Your boiler is struggling to accurately measure the temperature of your hot water because a sensor is faulty.
Your boiler's main electronic brain is failing to control the ignition and operation properly, which usually results in a complete shutdown to keep your home safe.
Your boiler is receiving incorrect temperature readings from its outdoor weather sensor, though it should still keep your home warm in the meantime.
Your boiler has detected an issue with the internal fan that safely removes combustion gases, causing it to lock out for your safety.
Your boiler has detected that water isn't flowing properly through its internal heating pipes, so it has safely shut down to prevent damage.
Your boiler is trying to start up, but it cannot sense the flame once the gas ignites, so it safely shuts itself down to prevent any gas build-up.
Your boiler has safely shut down because a sensor has detected that the exhaust gases leaving through the flue are too hot.
Your boiler has tried to start up but failed to ignite the gas flame, leaving you without heating or hot water.
Your boiler is not receiving any electrical power or the main control board has failed, causing the entire system to shut down completely.
Your boiler has detected an issue with the sensor that monitors the exhaust gas temperature, causing it to shut down for safety.
Your boiler has shut down completely for safety because it detected that the water inside has gotten too hot.
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BoilerFaultCodes