So I found the solution
The Yellow and green wire was not an earth wire! I traced it back and it ran into the thermostat.
I moved the wire from the earth slot on the back plate and put it in slot 4, and hey presto everything is now working like it should.
Thanks for taking the time to reply
are you saying there should be another wire?
The boiler man did ask me if it was working normally before as he said there should be a wire from the thermostat and he was confused as to how it worked before.
it was working as you would expect it to...
Hi Folks
I have just had my old Drayton Tempus Three replaced with a Drayton Lifestyle LP522 but it’s not working as it should.
The CH side is doing nothing the light come on but does not fire the boiler up.
The HW side is controlling both the water and the rads, the problem I have is...