I bow to your superior intelligence, of course if it is operated by a battery it will stop working but you, I mean normal people, don't expect to have to reset the factory settings when the battery is replaced! Any way I won't waste any more of your time, you seem to have enough time to make...
Yes it's working fine now, it's my own fault the battery symbol was flashing on the thermostat but I was too tight to change it. Great forum. Very happy!
Thanks very much for your help, I used the guide and the relay box wasn't binding with thermostat as at 5 because it reverted to factory setting ( off) when thermostat lost power. Thanks again. John.
Thanks for the reply Whitespirit66.
The boiler is a Veissman Vitodens 100 - W WB1B
35 KW Combi Boiler
The thermostat is a Honeywell CM927 and the receiver is Honeywell.
There is a red LED flashing on the receiver indicating that it is not communicating with thermostat, there is a grey...
Hello I have a Veissman boiler with a wireless thermostat.
The batteries were recently changed in the thermostat and since that time it has not communicated with the boiler. A red LED light flashes on the receiver.
I can work the boiler using it's controls and a grey button on the receiver...