17 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Genus Premium
The fault code is already on your display
Note it down before pressing reset — resetting clears the code immediately. 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 |
|---|---|---|
| 47-116-13 | Genus 30 MFFI | 1999–2007 |
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.
Tap any card for details
Your boiler has detected a problem with its ventilation system or flue, meaning it cannot safely push waste gases outside.
Your boiler is trying to start but cannot get the flame lit, so it has shut itself down as a safety precaution.
Your boiler has detected that it is overheating and has shut itself down as a safety precaution to prevent damage.
Your boiler is repeatedly struggling to keep its internal flame lit, causing it to shut down for safety reasons.
Your boiler has temporarily stopped working because it cannot safely confirm that exhaust gases are clearing properly.
Your boiler has detected an issue with the reset button, meaning it cannot properly process manual resets to clear previous errors.
Your boiler is struggling to detect the flow of water through the system, which typically means you will have no hot water or heating.
Your boiler is failing to detect the burner flame, which stops it from working to keep your home warm and safe.
Your boiler has tried to start up several times but has failed to light the flame.
Your boiler is struggling to clear exhaust gases effectively, so it has safely shut itself down to prevent any risk of fumes entering your home.
Your boiler is struggling to clear exhaust gases due to a sensor fault or exterior blockage, so it has safely shut itself down to prevent carbon monoxide buildup.
Your boiler is failing to ignite the main burner, which means it cannot produce the flame required to provide heating or hot water.
Your boiler is struggling to clear air or smoke properly, so it has safely shut itself down to prevent any unsafe operation.
Your boiler has automatically shut down because it detected dangerously high internal temperatures.
Your boiler has detected an issue with the sensor that monitors the safe clearance of exhaust gases.
Your boiler has temporarily stopped working because it cannot accurately measure the temperature of the water.
Your boiler is having trouble measuring the temperature of your hot water, which usually means it will stop heating water properly.
BoilerFaultCodes