26 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Baxi 600 System
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The GC number on your boiler's data badge identifies the exact appliance and production years, as recorded in the UK Product Characteristics Database.
| GC number | Appliance (register name) | Produced |
|---|---|---|
| 41-470-28 | Ecoblue 32 System ErP | 2015–present |
Appliance names and production years are taken from the UK Product Characteristics Database (the SAP/SEDBUK register). Where a GC number is also printed in this model's own manufacturer manual, both sources were checked to agree.
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Your boiler's electronic brain is experiencing an internal communication error that is preventing it from operating correctly.
Your boiler has lost the ability to accurately measure the temperature of the water circulating through your heating system, so it has shut down to prevent overheating.
Your boiler has detected a faulty sensor that monitors the temperature of the exhaust fumes, causing it to shut down for safety reasons.
Your boiler is struggling to accurately measure the temperature of the water returning to it, so it has stopped operating to stay on the safe side.
Your boiler is struggling to pump water around your heating system effectively, so it has stopped working to prevent itself from overheating.
Your boiler is struggling to pump water around your heating system effectively, so it has shut down to protect itself from overheating.
Your boiler has detected that it is overheating and has shut itself down to prevent damage because it cannot circulate water properly.
Your boiler has detected that it is overheating and has shut itself down to prevent damage, likely because the water inside isn't circulating properly.
Your boiler has detected that it is getting too hot and has automatically shut down to prevent damage or dangerous overheating.
Your boiler has detected that it is overheating and has automatically switched itself off to prevent damage.
Your boiler's water pressure is currently too high, which has caused it to stop working as a safety precaution.
Your boiler has stopped working because the water pressure inside the heating system has dropped too low to operate safely.
Your boiler has detected that hot water is not flowing around your heating system correctly, which is causing it to shut down to prevent overheating.
Your boiler has detected that hot water is not circulating properly around your heating system, so it has turned itself off to prevent overheating.
Your boiler has attempted to start but failed to detect a flame, causing it to stop operating to ensure your safety.
Your boiler has detected that the temperature in the exhaust flue is too high, causing it to shut down for safety reasons.
Your boiler has attempted to start but could not light the internal flame, so it has shut down to prevent gas from building up.
Your boiler has stopped working because it cannot light the flame required to produce heat or hot water.
Your boiler is trying to start but the flame won't stay lit, meaning your heating and hot water will not work.
Your boiler has attempted to ignite several times but has failed to detect a flame, causing it to shut down for safety.
Your boiler's air circulation system has stopped working properly, preventing it from igniting safely.
Your boiler has detected that the internal fan responsible for safely venting exhaust gases is not working correctly, causing it to shut down for safety reasons.
Your boiler has detected an issue with how it clears exhaust gases or brings in fresh air, preventing it from firing up for safety.
Your boiler has identified a problem with the temperature sensor, which is preventing it from safely heating your water.
Your boiler has detected what it thinks is a flame inside the unit when the gas is supposed to be turned off, so it has shut down for safety.
Your boiler has stopped working because the water pressure inside the heating system has dropped below the required level.
Not faults — these are normal operating states. Tap to expand.
BoilerFaultCodes