Boiler not firing up with OpenTherm
I have an Ideal Vogue Max Combi 32 boiler.
My Tado System is made up of 7 TRV and everything was working fine until I swapped the wireless extension kit for the EU model so that I could use OpenTherm.
I believe the wiring is correct, the + and - on the wireless receiver are connected to the OpenTherm terminals on the boiler. The only other connections on the boiler are the mains input and a room/stat loopback.
I followed the instructions for installing the wireless receiver and setting it to use OpenTherm.
The boiler sensor reading says OpenTherm is On.
Everything looks fine in the app, from what I can tell. No obvious errors and everything appears as expected. The Pro app shows info from the boiler, so I assume that means it is talking over OpenTherm.
When I turn the heating on I hear the radiator valves turn on and the app says it is heating the rooms, but the boiler does not fire up. The radiator symbol on the wireless receiver also does not come on (I’m assuming it should).
As a test I disconnected the digital +/- from the Tado and connected them together. At this point the boiler fired up (as I would expect). So I believe the boiler is configured correctly.
Does anyone have any idea what the issue might be?