Thanks for that. The pump was busted. But it appears the whole system is quite corroded and the sludge clogged up the pump. Lots of spending to commence. Any idea how much a power flush should cost?
I have recently moved into a new property and had accidentally left the hot water on continuous for 4 days. When I got back, the boiler was still running and the bathroom was in a mess. The ceiling was soaking with condensed water and the temperature up there was very hot.
Naturally I turned...