Low
36 on Ferroli Optimax

Your boiler has detected an internal sensor reading that is slightly outside of its usual limits and is waiting for it to return to normal before restarting automatically.

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 home's electricity supply is stableEnsure there are no external power surges or interferenceWait up to 15 minutes for the boiler to self-correct and restart

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Related fault codes

35View →F37View →34View →

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