7 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Baxi Combi 105 HE
This boiler uses LED flash patterns
Count the flashes in one repeating group before the pause. That number is your fault code. Do not reset until you have noted it. How to read fault codes →
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 |
|---|---|---|
| 47-075-08 | Combi 105 e | 2001–2011 |
Tap any card for details
Your boiler has detected a general internal fault that prevents it from starting, meaning you currently have no heating or hot water.
Your boiler is failing to light the internal flame, which could be due to a blockage in the waste water pipe or an issue with the gas ignition system.
Your boiler has detected that it is running too hot and has automatically shut itself down to prevent damage or dangerous overheating.
Your boiler is struggling to clear exhaust gases safely, so it has turned itself off to prevent any risk of fumes entering your home.
Your boiler is struggling to circulate water, likely because there is not enough water inside the system or the internal pump has stopped working.
Your boiler is struggling to accurately detect the temperature of the water used for your taps and shower, which will likely result in no hot water or fluctuating temperatures.
Your boiler has stopped working because it is unable to accurately measure the temperature of the water used for your radiators.
Not faults — these are normal operating states. Tap to expand.
BoilerFaultCodes