And need to remove the room thermostat.i am assuming these is connected to the boiler pcb
Board.as I cannot see any wires for the sat in the programer.can I any one help please.
I have photo of the programer
Hi @stem just a wee note if it is a valliant boiler beginning with a 4 it is a heat only boiler a system boiler begins with a 6 and a combi begins with an 8 the next two digits are the boilers output in KW so the 415 is a 15KW heat only boiler and yes I agree OP was looking at the wrong wiring diagramThen the room thermostat won't be connected to the boiler, you are probably looking at the wrong boiler wiring diagram. The Vaillant Eco Tech comes in several variants.
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local