6 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
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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 |
|---|---|---|
| 41-047-67 | 40-50 CI | 2001–present |
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Your boiler has lost power internally due to a blown safety fuse on the main control board, which has caused the unit to shut down completely.
Your boiler has likely stopped working because an internal electrical fuse has blown, often because the pump that moves water around your system has jammed or failed.
Your boiler is not receiving power, which could be due to a simple external electricity issue or an internal fuse failure.
Your boiler has switched itself off because it has gotten too hot, likely due to a circulation issue or a faulty internal sensor.
Your boiler has detected an issue with the ventilation system and has shut down as a safety precaution to ensure exhaust gases are being cleared correctly.
Your boiler is failing to light the gas flame or cannot detect that it has stayed lit, causing the system to shut down for safety.
BoilerFaultCodes