F22 error "dry fire prevention" Vaillant Thermocompact

RichSt · 17 Dec 2015

F.22 on the boiler screen this morning.

I heard it start up earlier but no heat sent to rads.

Water pressure is 1.5 bar. Recently bled rads, shouldn't be an air lock.

Is there anything else I can try myself? I am assuming maybe pump blockage/failure?

Many thanks,
Rich

Dan Robinson · 17 Dec 2015

RichSt said:
Recently bled rads, shouldn't be an air lock.

You gotta love baseless assumptions

Anyway - dead pump.

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F22 error "dry fire prevention" Vaillant Thermocompact

RichSt

Dan Robinson

DIYnot Local

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