Disaster! Warning to others
Following a thumbs-up on compatibility from Tado support via email I purchased a Vaillant ecoTEC plus 637 System Boiler (Tado confirmed the boiler is compatible and would communicate via the bus), along with a Vaillant Unistore cylinder. Subsequently (and now with boiler in situ), via phone today, Tado told me this system boiler was not compatible in bus setup.
This leaves us frustrated, and in a rather expensive pickle. We'd been trying to connect the Tado Extension kit +/- bus connectors through wireless method (TS, HC01, HW yes, EK yes, D07).
Now trying to make the most of what we have. I've asked Tado to escalate their comms issue. The options as I see them are:
- Switch the system away from bus to S-Plan, meaning we lose our on modulating boiler and flow rate water control of cylinder, inefficient
- Push Tado for refund (doubtful they will play ball as purchased Tado parts through different vendors through ebay and Amazon) and begin setting up a new Vaillant system with Vaillant TRVs
- Source an older Vaillant VR65 Control centre (which is now replaced by incompatible VR66) and connect my Tado set up to that (also risk losing Vaillant warranty)
Not all great options, so I'd be very grateful if anyone has any further suggestions.