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There is no connector between 6 and 7, it's the first thing I checked before I connected the bridge. I also did a factory reset of the evohome unit...

Just looking at the manual for your boiler, you have removed the connector between terminals 6-7 as well as connecting the opentherm to terminals 11...

Do make sure that (a) you have deleted the reference to the old BDR91 and (b) in the Control Panel have selected OpenTherm as your option. Provided...

To close this one off: I got in touch with Honeywell to enquire about about obtaining replacement terminal blocks and, to be honest, wasn't expecting...

The VR66 is considerably bigger than I was expecting. And just like you said above, I was thinking "what a waste" - none of the functionality is...

One day I will dream up a use for the zone valve and the NTC sensor outputs in the VR65....I mean they are just sitting there doing nothing at the...

Nice one - thanks for confirming. So just to confirm for anyone else looking to do this, all that is needed to activate HW mode on the VR65/VR66...

D.22 = 1, means that HW mode has been activated. Plus you have the flashing tap, which means it's working. D.5 is just what the CH knob has been...

Hooked up the VR66 today - I think it's working! Just want to confirm though - how do you know the HW demand has been activated? I see the tap...

If it does connect, it will still say opentherm in the options until you change it. When I setup mine I connected the opentherm bridge to the boiler...

If it binded to it then it's basically received a signal and they've talked to one another. The Evohome unit is telling me just now that its...

I am not sure my evohome tells me it is receiving a signal from it. I am sure it just said it had binded to the R8810 receiver and the receiver just...

That's what I'm trying to do. I go through the process and then hit bind and the evohome says the bind signal was received properly. Thing is,.I've...

Just checking you have set the evohome system devices option to appliance control opentherm bridge option.

Thank you for taking the time to reply. I've tried replacing the adaptor tonight, same one, just screwed on less tightly. I noticed the pin was...

Ok, so yesterday I made the following changes in the setup: 1. As said: my heatpump expects 2 different on/off signals; a signal with a heat...

I recently replaced a couple of radiators. At the same time I put new valves in but with one I noticed the black knob one turns to manually control...

Did you ever sort this out. I have had the exact same problem with one of our radiators and valves. The radiator was getting warm all the time even...

Thanks for the update, great it is solved!

This issue was resolved by phoning Resideo and them pushing the 19.33 firmware to my Evohome wifi controller. I set it to hot water priority (which...

When we had the room temp set before smart weather, the room would feel cold on cold days even though it said it was at the correct temp. Now on...

You want the room warmer because your perception of warmth/comfort is different based on the outside temperature and hence heat loss. Which is why a...

If the rooms are slightly draughty then this can more noticeable when the weather is very cold, so setting the temperature slightly higher can offset...

Why would one want a room at a higher temperature because it is colder outside? Surely if you have a room set at say 20c or 21c and that is what you...

I have never turned it on being dubious as to its value.

The boiler provides a useful D.9 status to show if the HW mode is on or not. Ofcourse if you are standing in front of the boiler the flashing Tap...

The smart weather seems to work fine for me. If it is colder outside, the rooms I have it set up on will got to a higher temp to help compensate for...

Can you not just turn the feature off? I have not requested the new firmware yet as I did not need or want most of the new features, but I would...