I Have a Britony combi SE Boiler and have removed a refitted a radiator i have opend all the valves on the rads to release any air but the boiler is still showing fault 40 and 80 low water pressure in central heating circuit.Can anyone please help.

Phil, November 2010

your boiler needs to be topped up via filling loop.usually a braided hose attatched tot two valves under the boiler on pipework.the valves are closed when the slot or handle are accross the pipes.open the valves inline one at a time allow the presure in slowly until your gauge reads just above one bar.

deano, November 2010