Low
47 on Ferroli Optimax

Your boiler has detected a temporary reading issue with its water pressure or temperature sensor and is pausing briefly to see if it self-corrects.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Temporary shutdown fault (automatically reset)

DIY fix possible

Check if the water pressure gauge is between 1.0 and 1.5 barTop up the pressure using the filling loop if it is too lowRestart the boiler to see if the temporary fault clears

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Related fault codes

F37View →F40View →A03View →

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