My heating and hot water system pumps over into the small tank in my
loft. I had a new pump fitted about six months ago and it was after
this that I first noticed the problem. I had the pump setting turned
down and this appeared to solve the problem only for it to return
again. It is hot water that is being pumped over for the duration of
the time that the system is on.
Yesterday I had a full power flush. The system was very dirty and the
flush has rendered the system quieter. The guy tested the system and
there was no pumping over when he was here. When the system kicked in
this morning, I went to check the tank in the loft and I was horrified
to see that the pumping over of hot water water was back.
Anyone any idea how to solve this problem?