Hi guys.
Getting really frustrated by this Tado install.
I have/had:
Glowworm Ultimate (FF) boiler
Potterton EP2002 programmer (adjacent to boiler)
Potterton PR2 room thermostat (wired from lounge)
Potterton cylinder stat (wired from upstairs airing cupboard)
Gravity fed water
I followed Tado’s instructions initially to just install the new room thermostat (and Tado bridge) in place of the PR2. This worked fine straight away allowing me to control central heating.
I subsequently bought the Tado extension kit in order to control the hot water as well. This is supposed to replace the EP2002 programmer. I followed Tado’s instructions to connect the existing wiring to the new Tado extension kit (all three live cables to the single live terminal, all three neutral cables to the single neutral terminal, all three earth cables to the single earth terminal, cables ‘3’ and ‘4’ to the corresponding terminals 3 and 4, and discard the linking cable between the live terminal and terminal 5). No changes with the cylinder stat.
Tado’s hot water controls work fine but Tado’s central heating controls no longer work. Tado thinks everything is fine but in fact the boiler is not firing up for CH, only for HW. Radiators are not warming up.
I’ve asked Tado for guidance but I don’t seem to be getting anywhere! Can anyone else help?
I’ve attached a pic of the ORIGINAL thermostat wiring and the ORIGINAL programmer wiring but it’s difficult to make a lot of sense of this. Unfortunately, Tado doesn’t allow me to receive the bespoke install instructions again so it’s hard to double-check what I’ve done or retrace my steps.
Regards,
James