orange

Just a question, what happens if a live current goes down the orange wire on a not energised (position W) drayton mid position valve, not as an output but as an input?

Hi Folks, Looking for a bit of help here. We moved into our current house in 2018 and have always had a bit of an issue with the heating. The boiler is a Viessmann 200-W WB2B system boiler, and the central heating is split into the zones, each controlled by a thermostat. The boiler is plumbed...