Hi,I live in a house that's boiler heated. Recently, the heat in one of the zones was always on, even with the thermostat set to the lowest setting.I checked the valve for that zone, and there was strong resistance on the valve lever. So if I understand it correctly, that means that zone was actually off, correct ? Yet the radiator was hot all day long.What might be the problem ? Should the control valve be replaced ?Thanks for any suggestions. via /r/DIY http://bit.ly/2G4DlPa
