The Efficient Home Forum

I have just installed the Evohome Value Pack A which has 2 x BDR91 relays.
One is connected to the electric supply for the oil boiler and the other controls the hot water valve via the immersion tank thermostat.
I have 8 x HR92's all connected and communicating fine with the Evotouch Controller.
However I am having some issues with the BDR91 relays.
They are binding successfully to the controller but when the HR92’s calls for hot water the main boiler relay is not activating and when I carry out the RF check the red Led flashes on both relays.
I have deactivated the hot water option and disconnected the hot water valve BDR91 in case there was some interference between the relays but this made no difference.
The boiler relay so about 40 cm from the boiler.
Even when the controller is right next to the relay the RF test fails.
I have reset and re-bound the relay numerous times and it binds successfully every time, but it is not activating and constantly fails the RF test.
I have reset the relays and swapped the face plates of both units without success.
It is unlikely both relays are faulty so it must be some interference or something!
Any help or suggestions to resolve this issue would be greatly appreciated!
Thanks.

Apologies for the late response. With issues like this, simply contact technical support on 0300 130 1299 (option 3) and they will help you.

Its sounds like the system configuration was incorrect. Have a look at page 46 of the evohome installation guide for when you have HR91's or HR92's on all radiators (https://thesmartthermostatshop.co.uk/in ... 1649144370).

Hello,

Thank you for your reply.
I tried ringing the Evohome technical support but only received a voicemail.
I am not sure what you mean regarding the incorrect configuration?
Can you please explain?
Also' I am not sure how an incorrect configuration would also result in an RF signal error message between the Evotouch controller and the BDR91 relays and would appreciate it if you could explain this?
Thanks.

mauriceosullivan wrote:Hello,

Thank you for your reply.
I tried ringing the Evohome technical support but only received a voicemail.
I am not sure what you mean regarding the incorrect configuration?
Can you please explain?
Also' I am not sure how an incorrect configuration would also result in an RF signal error message between the Evotouch controller and the BDR91 relays and would appreciate it if you could explain this?
Thanks.

Wish I had the time in the day atm but unfortunately I don't.

Resideo tech support line is 9am - 4pm. Make sure you choose option 3. I have just tried ringing them and I'm getting through fine?

The RF signal message is because you have not configured the system incorrectly and the evohome controller is looking for a device that doesn't exist.

If you are unsure, I would strongly suggest paying for an evohome Connected Specialist to come and resolve the installation for you. There should be someone in your area, find them here - https://heatingcontrols.honeywellhome.c ... installer/