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Mend Vaillant Boiler Central Heating Faulty

valiant central heating boiler,8 year old?

central heating wont cut off at temperatures,!!
hot water ok.

A J CADDEN
May 2008
VaillantHeating, Home Heating SystemsBoiler Central Heating Faulty
do you mean the room stats wont turn off the boiler?
or that the boiler keeps heating until it locks out?

if its the room stats, just change them
if its the boiler, change the ch thermister

T
May 2008

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