Low
31 on Ferroli Optimax

Your boiler has paused briefly because a sensor detected an unusual reading, and it will try to restart itself automatically once the reading returns to normal.

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 - resets automatically as soon as the value comes back within the boiler’s normal working range

DIY fix possible

Check if your heating system pressure is between 1 and 1.5 barEnsure your external wireless thermostat has fresh batteriesWait for 15 minutes to see if the boiler clears the code and restarts on its own

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