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I have tested the valve and it seems to go through all the positions at the different settings of the thermostat, timer etc, etc. I have checked every wire from each component back the wiring board and they all seem ok. The only wiring I can't check is the wiring in the three port valve as i...

I give it a try, that's very helpful

Hi, having trouble with my heating controls and could use some help. Since we moved in about a year ago this has been happening so thought I need to do something about it now the winter is coming. The problem is the radiators come on when the time clock central heating switch is off if the...