Ok so i have a y plan with 3 rads . one in the living room, one in the hall, and one in the bathroom.
Last night I switched the heating off at the controller, and turned the stat right down so it wouldnt come on during the night ( timer on controller is not working )
the hall rad was on full all night, and the living room rad was luke warm. When i turned the heating on, all the rads came on as normal. When i turned it off again, all went off except the hall one.
what the hecks going on ? and any ideas what i need to do ?