BoilerFaultCodesMaxol 5 Fault Code
The Maxol 5 fault code means: your boiler started to heat up but the flame went out unexpectedly, causing the system to shut down for safety.. It appears on 1 Maxol model in our database.
Technical description: Flame loss - Loss of flame signal during operation
DIY fix possible
Check that your gas emergency control valve is open and you have credit on your gas meterCheck if other gas appliances, like a hob, are working to confirm gas supplyPress the reset button to see if the boiler restarts
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Maxol models that show the 5 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Maxol 5 fault code information on this page is sourced and cross-checked against the official Maxol service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026