Hi,
We've just purchased a new house and have discovered that when the CH and HW are both on, only the hot water cylinder heats up and the CH remains stone cold. Both work ok on their own. In addition the CH is a bit slow and rads take a while to warm up, I've noticed the boiler comes on for about 3-4 mins then goes off again. The room thermostat is clicked on but the boiler cuts out. This means it pretty much never reaches the thermostat temp setting.
A friend of the family had suggested the grundfos pump may be the cause of the 2nd issue, however we are not too sure about the 1st issue, any thoughts?
We have a potterton kingfisher II boiler and hot water tank with horstmann 425 diadem programmer.
Thanks!
Ian
We've just purchased a new house and have discovered that when the CH and HW are both on, only the hot water cylinder heats up and the CH remains stone cold. Both work ok on their own. In addition the CH is a bit slow and rads take a while to warm up, I've noticed the boiler comes on for about 3-4 mins then goes off again. The room thermostat is clicked on but the boiler cuts out. This means it pretty much never reaches the thermostat temp setting.
A friend of the family had suggested the grundfos pump may be the cause of the 2nd issue, however we are not too sure about the 1st issue, any thoughts?
We have a potterton kingfisher II boiler and hot water tank with horstmann 425 diadem programmer.
Thanks!
Ian