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home Fix label Heating label_important Home Heating Systems category Vaillant

vaillant 18 t3w combi?

t3w 18 combi pilot light okay and lit ,pump running but

no heat or hot water,differential valve okay.solenoid does not lift .overheat stat okay faulty solenoid or pcbnot sending electrical signal?
c.ford, January 2011
home Fix label Heating label_important Home Heating Systems category Vaillantdone
is fan running ? if not check fan if running check fan pressure switch every boiler has a lighting sequence check each part in sequence don't jump ahead

brian, January 2011
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