The other thing, and I know yours is now controlled by the 12v lines, but in terms of the supplied command box, what starts the ASHP running? I.e. Where does the call for heat come from? Maybe I missed a page in the install manual but not all of the terminals on the controller were documented.. 4 cores go yo the ASHP, and the ASHP can activate the immersion via relay, but I'm not clear on what drives it all I.e how it knows when to heat, what controls the motorised calve to go from dhw to ch mode etc
Can you remember anything from the time before you implemented another control strategy, re the connectivity?
Edited by joiner, 03 May 2016 - 06:05 AM.