Recent content by MickeyV

All ball valves are open, pump in airing cupboard has a 3 port mid position valve above it which allows for flow in one direction for central heating and switches over for the hot water flow to the main tank when required. Both have the same effect when activated..the boiler pushes water back...

:( Good afternoon people, my first time here and I hope to get some answers. My system is 30years old and still going strong apart from one thing, whenever I switch the water or heating on, the water in the header tank in the loft starts to overflow to the outlet pipe outside from under the...