Help !!!
I am having problems with my Vaillant TURBOmax VUW 282E combi , for 1 week now since we returned from holiday we have had no heating & no hot water.The heating was left on whilst we were away , but appears to have locked out sometime during the week. The boiler will not light , just keeps locking out.I have changed the main switchboard and the main gas solenoid.It goes through it's sequence , the pressure differential switch is working , it sparks , but does not light.There is gas before the gas valve but not after it. Anybody any ideas , your suggestions would be greatly appreciated. Thanks