Hive Install

[stealth80]

Hi everyone,
I've made a huge error installing my Hive system, by that i mean I didnt take a picture of the Danfoss WB12 wiring block before disconnecting! I watched a guide that basically said to trace back the black connected to the white wire and swap over the grey. But I mistook part of it and I ended up removing the wrong grey and black and im not 100% sure which one goes where.

I have a danfoss fp receiver which is a straigh swap for the Hive 2 channel controller, I have a boiler in the kitchen (Icos he12) and a separate water tank upstairs (range tribute he). I have fully isolated the old thermostat at both ends which maybe where the problem is (identifying the correct terminals) i have no errors on the hive controller or receiver, however there doesnt appear to be a heat demand going to the boiler as it stays on 0 on the display (should be a c i believe)

 

[stealth80]

I've done a bit of reading with the multimeter and watched further videos. I have found the hive receiver hot water and heat demand cables as labelled in the picture, ive connected these to the respective valves.

I'm now left with a grey wire connecting to the white and yellow which seem to be from the tank thermostat.

Hot water

hot water kicks the boiler in when I turn the tank thermo stat up, at this point I'm not sure if its wired correctly (but water is still hot).

heating

the valve opens (tried the lever) but it still isn't kicking the boiler in.

Any help please?