11 fault codes with plain-English explanations, severity ratings, DIY guidance, and repair cost estimates.
Replaced by: Vokera Mynute iE
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 |
|---|---|---|
| 41-094-81 | Mynute i20 | 2013–present |
| 41-094-82 | Mynute i30 | 2014–present |
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Your boiler is currently undergoing an automatic safety shutdown process, usually because the water temperature has risen too quickly or the system is waiting for the pump to move heat away.
Your boiler is failing to light because it cannot detect a flame, meaning you currently have no heating or hot water.
Your boiler has detected that it is running too hot and has automatically shut down to prevent internal damage.
Your boiler's air circulation system isn't sending a signal back to the main controller, so the unit has safely shut down to prevent improper combustion.
Your boiler has stopped because the water pressure inside the heating system has dropped too low to operate safely.
Your boiler’s internal computer chip has lost the connection to its pre-set configuration settings, meaning it doesn't know how to operate correctly.
Your boiler has detected that the water temperature is too hot or the sensor measuring it is broken, so it has shut down to prevent damage.
Your boiler has detected that the water temperature returning to it is unusually high or that the sensors are not reading the temperature correctly, causing it to shut down to prevent damage.
Your boiler has detected that the exhaust gases are becoming dangerously hot, so it has shut down to prevent damage or safety risks.
Your boiler has detected that the exhaust gases are getting too hot, so it has shut itself down as a safety precaution to prevent damage.
Your boiler has detected an issue with a sensor that monitors the temperature of the water used for your heating system.
Not faults — these are normal operating states. Tap to expand.
BoilerFaultCodes