I changed my gravity hot water system to a fully pumped system about 5 years ago. Initially I had a problem with over-pumping, but when I reduced the pump to a lower setting the problem was cured.
I've recently removed a radiator (whilst re-furbing a room) and at the same time flushed the system.
Since then the over pumping has returned and the pump is on its lowest setting.
The pump is in the loft and follows the overflow and then feed by about 50cm.
Is this likely to be a blockage and does anyone have any suggestions on flushing techniques? Or is it the pump, overflow, inlet combination?
I've recently removed a radiator (whilst re-furbing a room) and at the same time flushed the system.
Since then the over pumping has returned and the pump is on its lowest setting.
The pump is in the loft and follows the overflow and then feed by about 50cm.
Is this likely to be a blockage and does anyone have any suggestions on flushing techniques? Or is it the pump, overflow, inlet combination?