Thanks for suggestion, but problem fixed today. Electrician spoke to Danfoss. It was a missing connection from the programmer, not sure of the details only know it was grey wire. main thing is it all works now. Thanks again for your time.
I have recently had installed by a qualified electrician the components of a Danfoss control pack with the wiring box. My problem is with the HS 3 port valve, the plumbing bit I did myself - it does not open the valve for the heating. Hot water is ok. The supplier said the thought it was the valve a...