The taped up earth is in terminal 3 on the back plate. - heating on (NO)
wired as follows
N - neutral from boiler
L - live from term. 2 from boiler
1. Common - linked wire with L
2 - Heating off (NC) unused
3 - heating on (NO) live return term. 1 from boiler
4 - unused
im thinking now...
I wonder if anybody can work out where I’ve gone wrong here? See pics. Baxi duotec boiler.
https://imgur.com/m1hcndP
https://imgur.com/OvbA8II
https://imgur.com/FqIUW4k
https://imgur.com/4WPX7Pt
https://imgur.com/BJm4r4F
