Hi,
We have had the CM927/BDR91 running fine with our Vaillant ecoTEC Plus 837 boiler since newly fitted 3 years ago. For some reason over the last couple of months we have noticed that the boiler is not switching the heating on or off when the CM927 sends the signal to the relay box. The boiler is fine for hot water but it wont start/stop the heating.
The Honeywell CM927 looks to be working fine & the battery is not flashing to say change, I have rebound it with the BDR91 receiver just to make sure and the Green light is on the BDR91.
Do I need to purchase a new set or is there anything else I can do to try and get the units working again?
Thanks
Scott
We have had the CM927/BDR91 running fine with our Vaillant ecoTEC Plus 837 boiler since newly fitted 3 years ago. For some reason over the last couple of months we have noticed that the boiler is not switching the heating on or off when the CM927 sends the signal to the relay box. The boiler is fine for hot water but it wont start/stop the heating.
The Honeywell CM927 looks to be working fine & the battery is not flashing to say change, I have rebound it with the BDR91 receiver just to make sure and the Green light is on the BDR91.
Do I need to purchase a new set or is there anything else I can do to try and get the units working again?
Thanks
Scott