Replacement thermostat not working

[spliglet52]

Hello,

As part of our refit, I replaced an ancient Honeywell thermostat with a new Honeywell Dial Setting Room Thermostat (T6360B1028), replacing the wires like for like. However, the heating now does not turn off. Any suggestions? I have two wires, brown and blue currently wired to 1 and 3. On the old one when I turned it I would hear a click as it cut in and out, but not on the new one, althought that could be more to do with the modern mechanism.

Any suggestions would be much appreciated.

Thanks,

James

 

[denso13]

You need 3 wires for the T6360B