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Mend Vaillant Heating Gas Valve

vaillant blowing fuses?

i have changed the fuse about 5 times. changed the pump and fan, still blowing. i have now changed the gas valve and the fuse is still blowing on the board.

Any ideas??

Freddy

freddy
August 2009

Vaillant Heating, Home Heating Systems Heating Vaillant Gas Valve

if its as soon as you call for heating or dhw disconnect fan gas valve and pump from pcb if still blowing pcb faulty

san
August 2010

you dont say what model , could be a diverter valve try disconnecting sometimes water leaks into the heads

tim
August 2009

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Vaillant Boiler Blowing Fuses - Help!