Centaurplus c27 power

Hello, we have the centaurplus c27 and it currently has no power. I am trying to establish if the problem is the central heating programme or the power supply.

I have removed the until from the wall and replaced the battery. Does anyone know if the unit needs to be back on the back plate in order to work? Or should it work in my hand if the battery is working?

Thanks!

 

It must be on the wall plate / terminals.
Have you checked the fuse on the central heating supply ?

 

Thanks for replying and confirming. I'm not sure where the fuse is but I will see if my husband does when he gets home!

 

There will likely be a fused connection unit near to the programmer ,possibly with a switch incorporated. ( Google" fused connection unit " )