10 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Baxi Platinum Combi HE
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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 |
|---|---|---|
| 47-075-23 | Duo-tec Combi 24 HE | 2006–2008 |
| 47-075-24 | Duo-tec Combi 33 HE | 2006–2008 |
| 47-075-25 | Duo-tec Combi 28 HE | 2006–2008 |
| 47-075-26 | Duo-tec Combi 40 HE | 2007–2008 |
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Your boiler's temperature sensor is failing to provide accurate readings, which has caused the system to stop heating your home as a safety precaution.
Your boiler has detected a faulty sensor in the flue system, meaning it cannot reliably monitor exhaust temperatures and has stopped working for your safety.
Your boiler is struggling to accurately measure the temperature of the hot water it produces, so it has shut down to prevent the system from overheating.
Your boiler has detected that it is getting too hot and has automatically shut itself down to prevent damage.
Your boiler has stopped working because the water pressure inside the system has dropped too low to operate safely.
Your boiler is struggling to pump water around your heating system correctly, usually because the water pressure is too low or the pump is blocked.
Your boiler has detected that the temperature of the exhaust gases leaving via the flue is too high, causing it to shut down for safety.
Your boiler has stopped working because it cannot detect a flame or is not receiving gas, effectively preventing it from firing up safely.
Your boiler has detected that the internal fan responsible for safely venting exhaust gases is not spinning or communicating correctly, causing the system to shut down to prevent unsafe operation.
Your boiler is struggling to get water moving through the system to prepare for heating, which usually means the system is failing to detect that the pump is starting up correctly.
BoilerFaultCodes