V4073 A1039.
There is power to the CH/HW controller (a Horstmann Centaur Plus c27) but both CH and HW are off (no red lights on controller unit).
HOWEVER, the head unit of the 3 way valve is quite warm..none of the pipes connected to the valve are because nothing (CH/HW) has been "on".
I put CH on to "24hrs" just now and the boiler fires fine and heat gets to rads. I then switched CH back to OFF.
I then tried HW only on "24hrs" but nothing happens at the boiler? HoI wever..currently have a cylinder full of hot water courtesy of the immersion?..would that stop the boiler firing up when on HW only?..possibly I'd have thought?
From memory when I last had it on HW only water (i.e. CH is "OFF")..I got hot water coming into the rads. I will try the HW only setting again in the morning when the HW cylinder has cooled off/emptied of hot water and report back here.
Just concerned really that the head unit is quite warm..(not hot though) as described as above when the boiler has not been used in days.
There is power to the CH/HW controller (a Horstmann Centaur Plus c27) but both CH and HW are off (no red lights on controller unit).
HOWEVER, the head unit of the 3 way valve is quite warm..none of the pipes connected to the valve are because nothing (CH/HW) has been "on".
I put CH on to "24hrs" just now and the boiler fires fine and heat gets to rads. I then switched CH back to OFF.
I then tried HW only on "24hrs" but nothing happens at the boiler? HoI wever..currently have a cylinder full of hot water courtesy of the immersion?..would that stop the boiler firing up when on HW only?..possibly I'd have thought?
From memory when I last had it on HW only water (i.e. CH is "OFF")..I got hot water coming into the rads. I will try the HW only setting again in the morning when the HW cylinder has cooled off/emptied of hot water and report back here.
Just concerned really that the head unit is quite warm..(not hot though) as described as above when the boiler has not been used in days.
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