Baxi 600 electrical connection

[niren]

Ok the move of the black wire to choc 1 in the boiler appears to have sorted it. I hope im not speaking too soon but thanks for all your help folks!

 

[Toneyz]

Black should be in B1,B2 is 230v out to room stat B1 is the sw return.

 

[123]

Need to wary of the manufacturer instructions for any future warranty issues. I'm not familiar with Baxi, but if it's anything like Worcester Bosch and you just put a Switched Live back into the boiler and there is a fault, then you have no warranty. Baxi looks a similar enough setup.

At a guess you've spent £2,500 on this boiler change, £200 on a Tado and won't pay a further £100 or so getting someone in who know's what they are doing. Sheer madness.