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So here is my current wiring attached 1-2 linked. 3 and 4 - goes to the old alpha boiler rc 40 and 44 to wiser opentherm I did some closer look on what is happening and at the moment I have an awkward configuration where wiser is switching the boiler setting from summer to winter instead of...

Hi All, I'm trying to fit drayton wiser thermostat to connect to opentherm on alpha evoke 33. The existing boiler is fitted with the basic alpha wireless thermostat. I wired the new thermostat to the opentherm to the 41 and 44 and switched the P7 to 1 as described in the documentation. The...