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dripping expansion pipe?

had to renew a leaking diverter valve on a vaillant ecotec boiler, everthing works fine (heating and hot water) but now the expansion keeps dripping and have to keep topping up the water pressure. help.

david
March 2011
VaillantHeating, Home Heating SystemsVaillant Ecotec Boiler
if u dumped pressure to change valve through pressure relief valve, there will be muck in it, and it wont have seated properly. either open it a few times or replace it for less than a tenner

craig
March 2011

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