Morning.
I've got a bit of a confusing one. A system that has worked fine for a decade is now heating the rads when the hot water is turned on. It is as far as I can tell a standard vented indirect system. As soon as you turn the hot water on at the controls you get hot water but the rads also start to warm up.
I have turned the heating controls off and put the back up immersion heater on providing hot water.
A colleague has suggested that it may be because the return for the central heating is tee'd in on the 1st floor and not the ground floor although did not offer a suggestion as to why this has happened now.
Any ideas?
I've got a bit of a confusing one. A system that has worked fine for a decade is now heating the rads when the hot water is turned on. It is as far as I can tell a standard vented indirect system. As soon as you turn the hot water on at the controls you get hot water but the rads also start to warm up.
I have turned the heating controls off and put the back up immersion heater on providing hot water.
A colleague has suggested that it may be because the return for the central heating is tee'd in on the 1st floor and not the ground floor although did not offer a suggestion as to why this has happened now.
Any ideas?