I have a ford transit and have just noticed what appears to be a broken switch on the frame where the sliding door touches {not the contact switch at the front of the door} it is on the right hand side of the opening can any one tell me what it is for?
Go into d codes see what flow is registering also s code will tell what boiler is doing if no leak on system could be plate h/exch passing into system, check prv for leak.
Fitted one last week fantastic, cistern already fitted took 30 mins to connect no problems since fitted quality good reccommend them.Basically idiot proof
I had similar on a glow-worm energy saver combi traced mine to a dripping tap preventing heating coming on or for short cycle.Basically pre heat kept over-riding central heating,To prove turn dhw off on boiler or rising main and see if heating comes on then.
Had a flow sensor fail under warrenty Vailant fitted new sensor within 24 hours sprung a leak.Another vailamt engineer apologised and said clip was wrong orientation and had moved under mains pressure no problem since fitting clip correctly.