BDR91 green light won't go off...

[cjcoffin]

... whatever I do.

I have a system with Evotouch colour controller and 11 rads.

7 of them have original HR80 wireless TRVs, one a replacement HR92 and 3 plain Drayton TRV4s. These three rely on there being a demand from elsewhere in the system to turn on, this is by design.

ATM the Evotouch is set to Heating Off but the green light on the BDR91 will not go off whatever I do so there is a call for heat all the time. So even if all the wireless zone valves are at 5C the other three rads will be on 24/7.

In line with various other posts I have checked the RF reception on the BDR91 (5 blinks), done a factory reset and re-bound it to the Evotouch controller, all apparently successful but it has made no difference.

I found one of the HR80s was still set to 20C despite being supposed to be off, setting that to 5C by hand has not made any difference either.

Is there anything else I should try?

 

[CountryFan]

Has this always been the case? Have you altered or checked any wiring?

 

[lloyda]

Go into settings and check system status. Check there is no demand from any zone listed there

 

[cjcoffin]

Go into settings and check system status. Check there is no demand from any zone listed there

If only that were possible! A long-standing criticism of the Evohome setup is that the diagnostics are poor-to-non-existent so there is no display of what is calling for heat.

It may have been updated more recently but there is nothing like that under Settings on my controller.

And it was sold with a promise that it was field-upgradable with software updates. I have even sent Honeywell their own publicity material stating this, but they continued to deny it had ever been said.

For now the problem has gone away. The HR80 that had set itself to 20C was also the one that reported a comms error overnight. So I am thinking that it had defaulted to 20C and this was calling for heat. Turning the knob had no effect. Eventually I got it to accept a setting of 7C sent wirelessly from the controller and this is what finally made the green light go out. Annoyingly we only use that rad when our son has come to stay.

Comms in a barn conversion with thick (60cm) stone walls are a nightmare. Not helped by the evohome architecture which I was told meant that repeaters were not and never will be a possibility. Happy to be proved wrong!

 

[lloyda]

The version I have, long press on the settings icon to get into the installation menu, and then System Summary gives you the demand for each zone and the overall boiler demand. Sounds like you must have a version that predates that functionality.