i turned off the heating and hot water for 2 days as i was going away. came back an dthe heating isnt working and the boiler is flashing 0.4 at the bar. how do i get the pressure up to get the heating to work?

desperate for central heating, April 2008

You need to find the filling loop - thats the valve that allows fresh water from the main into your boiler, increasing the pressure. Open the tap on the loop, and watch the pressure rise. You don't say what make of boiler you have - some filling loops are a flexible steel braided pipe with a tap on - some newer boilers have a plastic tap inside the casing.

John, April 2008