Al m wrote in
updirect.com:

Ive tried all the ways to get the thermostat to talk to the boiler.
The problem I have is my thermostat is stuck to my wall so I cant
take it to the WR1 unit.
I did get it to work twice. That lasted for 2 days each time. Now I
cant get it to come on at all. The hot water works but no heating


Doesn't it remove from the stuck-on back casing?