Replacing Honeywell T40 Thermostat with DT90e

[neillynch]

Hi,

I have tried to search for the answer but I haven't found anything that answers my specific question. My current T40 is wired up as follows :



The wiring diagram is :



I tried :

A - Red
B - Yellow
C - Blue
Earth, isolate and make safe

But that blue a fuse.

I'm sure this is a very simple question for someone who knows what they're doing.

Thanks in advance.

Neil

 

[Howsie]

Attachments don't work for me I'm afraid.

 

[neillynch]

I'm sorry about that, I think I've fixed them now.

 

[dancinplumba]

red to A, yellow to B, blue wire not required, put it in X or Y

 

[neillynch]

Thank you very much, that worked.

 

[dancinplumba]

good, there is a thanks button in the left hand corner