Recent content by bbuk

The Code inside the CM67 is T6667B1069 - there is a * which says "optimisation not available on T6667B1069" - I have gone through as you said earlier and reset to factory settings. I've just put brand new batteries in it as well. So hopefully this is going to work. Its still a balmy 26.5 degrees...

Theres only two wires behind it.

Thanks for your advice, I will try that.

Yes it has worked - its been fitted for 6 years. I've just taken the CM67 off the wall and the wires behind are just a power supply. So it must be wireless. Will the receiver be behind the cover of the boiler?

I'm not entirely sure where the receiver is? Is it wireless? The CM67 is on the wall and it has wires going through the wall....

Hi - I've got a Honeywell CM67, and no matter what setting I put it on, Manual, Auto, off etc, the heating seems to come on whenever it wants. Nearly all the time. Has anyone any ideas what I can do?