thank you bongo bongo, i've phoned him and he's coming out tomorrow, but he said i could keep in on, as it has been on since monday night, and it is very cold out.
just installed today a VOKERS COMPSCT 29E boiler, every time it ignites a loud bang comes from the boiler. the installer said the inside casing maybe a bit loose. i've never heard such a loud bang from any boiler. please can anyone advise me.