We were called to a property in Holystone to look at a Gledhill Boilermate II. It had stopped working, there was no hot water, no heating and a clanking sound from the Potterton boiler. These are classic signs of poor circulation and sure enough after testing the electrical supply we found that one of the pumps has seized. The pumps are located in the airing cupboard to the side of the hot water cylinder and have been squeezed in place with no real thought for how they could be serviced in the future. After the isolation valves failed to stop leaking we were forced to drain the whole system and replace the isolation valves and two pumps as can be seen from the phone above. The whole job took about 5 hours but was complete and is mowing working – leak free.