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I purchased one of these adaptors to test on my Orki TRV head and it worked. https://www.amazon.co.uk/dp/B077GBD7K9 I was able to mount the Drayton smart TRV on top. So now to purchase a few more to complete the setup. Thanks everyone for all your help.

Sorry I should have said non-smart TRV's They are pretty old, the name on them is Orkli They don't seem to be 30mm x 1.5 They have a slightly smaller diameter. Maybe 28 or 29mm I'll see if I can find adapters for them online or else it might be a job for a plumber to replace them. The main...

That seems to have done the trick. The backplate must have been wired with points 3 and 4 in reverse. The Drayton Wiser app turns the CH on now when it should. My next issue is that the Wiser TRV ring nuts don't fit my current manual TRVs so I'm going to have to search for an adapter for...

Hi So the Wiser seems to work backwards when it's attached to the existing Backplate. And I'm not sure if it's doing that because the backplate that was fitted with the EPH programmer was wired backwards to begin with. As it just had generically named buttons called Zone 1 and Zone 2.

Hi, I'm hoping to switch my old Electronic Programmer from an EPH R27 over to a Drayton Wiser 2-Channel Kit. I thought it would just be a case or removing the old EPH Programmer and popping on the new Drayton Smart Hub. But it seems things are backwards in terms of functionality when I do...