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Not a problem
Discuss hot water won't turn off in the Central Heating Forum area at PlumbersForums.net
I disconnected the orange wire and turned the power on. The MV still moved around and engaged the switch but the boiler didn’t fire up (I guess that’s what the orange wire does )
The UFH set up is in the pictures. The MV is on the pipe straight out of the boiler to the right. The controls are just above the boiler to the right. The UFH controls were just added to the CH controls that were already there. I am pretty sure something is wrong with this setup, nothing has been as it should since it was installed.Good to see problem solved by removing the permanently live grey wire from terminal 8, think I have seen something like this on a outside grant boiler where the frost stat was incorporated in here, it may be worth tracing this wire sometime especially before winter sets in especially if you have a outside boiler, also would be interesting to see where the ufh is controlled from sometime.
The grey cable in terminal 3 is to the MV of the UFH. It also has a black cable from the cable coming from upstairs and the brown wire from the MV control box. The permanent live from upstairs that is disconnected is in the blank terminal to the right of terminal 4.There also seems to be a brown wire in terminal 3 of the frost stat as well as the grey wire which presumably should be a switched live, wonder if that brown is the permanent live and should be somewhere else?.
What is the stat's make/model?The grey cable in terminal 3 is to the MV of the UFH. It also has a black cable from the cable coming from upstairs and the brown wire from the MV control box. The permanent live from upstairs that is disconnected is in the blank terminal to the right of terminal 4.
What is the stat's make/model?
Reply to hot water won't turn off in the Central Heating Forum area at PlumbersForums.net
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