Thermostat not communicating with boiler.

[JohnnyRay]

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 but obviously the heating isn't controled thermostatically.

I can see similar threads have been posted before and I have tried switching the boiler off and on with no success.

Any ideas please??

John.

 

[Whitespirit66]

What's the make/model of stat?

 

[JohnnyRay]

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 button on the receiver which, when depressed, switches the boiler on and off.

Thanks for your help.


John.

 

[D_Hailsham]

The installation instructions are Here, if you don't already have them.

Check communication: Para 2.2.2

If it fails, carry out the rebinding procedure: Para 5.1

If that fails, one of the components is faulty.

 

[JohnnyRay]

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.

 

[Agile]

So is it working again now?

Those stats do need a Duracell battery as the peak current is quite high.

Cheap zinc carbon batts just dont give enough power.

Tony

 

[JohnnyRay]

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!

 

[bathjobby]

Reminds me why I stopped wasting my time trying to help people here

 

[JohnnyRay]

Charming! You don't expect your heating to stop working because a battery goes!! Thanks again to those who can still be bothered to help.

 

[bathjobby]

You do if its controlled by a battery operated device..........and its telling you the battery is low.........and you admit you saw and and couldn't be bothered............

 

[JohnnyRay]

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 useless condescending comments in a forum which is designed to help people. I can see you've been thanked a whole 13 times, boy you have been busy!!