9 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 |
|---|---|---|
| 41-592-39 | Gold 18 System ErP | 2015–present |
| 41-592-40 | Gold 24 System ErP | 2015–present |
| 41-592-41 | Gold 28 System ErP | 2015–present |
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The boiler is struggling to monitor the temperature of your radiators because of a faulty internal sensor.
Your boiler has detected a problem with how it disposes of waste gases or condensation, causing it to shut down for safety.
Your boiler has switched itself off because it has reached an unsafe temperature, usually due to a lack of water flow or a blockage.
Your boiler water pressure has dropped too low for the system to operate safely, which is usually caused by a natural loss of pressure over time or after bleeding radiators.
Your boiler is struggling to move water around the system, which is causing it to overheat and shut down for safety.
Your boiler has automatically shut down because the sensors have detected that the exhaust gases are getting too hot.
Your boiler has failed to light or maintain a flame, which means your heating and hot water will not work until the gas supply or ignition is restored.
The fan that clears waste gases from your boiler has stopped working correctly, and the system has shut itself down as a safety precaution.
Your boiler has sensed that water is not moving correctly around the internal system before it attempts to ignite.
BoilerFaultCodes