BoilerFaultCodesMaxol 6 Fault Code
The Maxol 6 fault code means: your boiler has shut down because the internal water temperature has become too hot.. It appears on 1 Maxol model in our database.
Technical description: Temporarily overheated appliance - Water temperature greater than 100°C
DIY fix possible
Ensure all radiator valves are fully open to allow water to flow.Check that the boiler pressure gauge is between 1 and 1.5 bar; top up if low.Press the Reset button once the boiler has cooled down for 20 minutes.
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Maxol models that show the 6 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Maxol 6 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