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Ferroli Optimax HE 31 - overflow pipe dripping F37?

We are having repeated F37 error with dropping pressure, having to top up at least twice a day. No leaks on rads but overflow from boiler outside dripping constantly. Would this cause the F37 problem

Neil
December 2013

Ferroli Heating, Home Heating Systems Ferroli Optimax Error

Hi toptrish

Yes there is a pressure gauge, but it rarely goes up above 2.5 so that sounds like an expansion relief valve.

Neil
December 2013

Is there a pressure gauge? top up to 1 bar then fire boiler up, watch pressure gauge to see if it goes up to 3 bar if not and water is still dripping from overflow pipe the expansion relief valve needs replacing, If pressure goes up to 3 bar then the expansion tank requires attention

toptrish
December 2013

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Ferroli Optimax HE 31 - overflow pipe dripping F37?

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