Vaillant ecoMAX time SWITCH 110 gas boiler pressure problem?
My gas boiler vaillant ecoMAX time SWITCH 110 had a pressure problem and its not coming on. How can I fix it . No heating and no hot water . Thanks very much .
Easy to refill to 1.2 bar it has self filling point under flow pipe and main water supply in boiler ,two square nut with slot ,you do it by screw drive or with radiator vent key ,open both one by one clock wise ,open one than other you will see pressure going up close both when pressure is 1.2bar
ltd
September 2013
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