That’s a wireless receiver.
Your thermostat will be somewhere else in the property, normally a hallway.
Is there a woman in the house who can look for you? My wife always finds things that I swear were not there
ok so the lock shield valves are on the rads right? just checked one of them and it was off. i guess previous owners did this for a reason? i will go round and make sure they are all on.
The lockshields should not be wound fully open like bathtaps. They should be about half a turn away from fully closed.
If you have wound them all open, a couple of rads nearest the boiler will get very hot and the others will be cold.
will fix this! i went round an opened them all fully.
Post back once she’s found it
By the way that’s a Honeywell BDR91 receiver.
Could you post a picture of your radiator valves?
Anything like this around the house?
https://www.jtmplumbing.co.uk/heati...MIo7_Q6KSj2AIV4Z3tCh0SQAawEAQYAyABEgLJevD_BwE
It’s possible the previous owners have taken the control unit with them.
I knew you man-looked!
Merry Christmas
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