So they have been using both brown and blue sleeving in the junction box to identify wires. That is good of them.
I increased the brightness of the junction box. And bottom right I can see 2 green/yellow wires sleeved blue and connected to a blue wire.
This matches an early photo of a working stat where g/y goes to N terminal.
Obviously if your stat isn't working, I assume it has been bypassed somehow to heat the room? either with the lever on the value or electrically. (what the one with the cover off?)
You now need to identify which silver valve does the troublesome room and then track the black cable back to the junction and see where its brown wire is connect to.
If you set all the room temps low except one at a time, and then see which pipe remains hot you can mark the valves to rooms
and then find the one you are looking for I guess
P.S if you look at the wiring, you will notice what is normal with your setup, is that the cable comes from the stat. The blue wire with brown sleeve is on the On signal and connects to the brown wire of the zone valve.
so for however many bedrooms? you have that work this should be the case
I increased the brightness of the junction box. And bottom right I can see 2 green/yellow wires sleeved blue and connected to a blue wire.
This matches an early photo of a working stat where g/y goes to N terminal.
Obviously if your stat isn't working, I assume it has been bypassed somehow to heat the room? either with the lever on the value or electrically. (what the one with the cover off?)
You now need to identify which silver valve does the troublesome room and then track the black cable back to the junction and see where its brown wire is connect to.
If you set all the room temps low except one at a time, and then see which pipe remains hot you can mark the valves to rooms
and then find the one you are looking for I guess
P.S if you look at the wiring, you will notice what is normal with your setup, is that the cable comes from the stat. The blue wire with brown sleeve is on the On signal and connects to the brown wire of the zone valve.
so for however many bedrooms? you have that work this should be the case
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