Ariston Eurocombi?

Dan,
Could be the expansion vessel located in the top has lost it's pressure. This means there is no room for expansion. You can recharge this with a simple car tyre style footpump.

SC
December 2008

hi,
my ariston euro combi is playing up,one rad dosent work due to a[sort of plumber]stopping a leak undrneath the floorboards that was dripping downstairs,he did something with the tap on the rad and stopped the leak but didnt fix the rad which was work fine before..also the switch to the pilot light is broken as have to keep pushing it in all the time,the pilot light itslf is fine and dosent blow out,its just the switch and the rads[except the non working ones ]come on when the hot water is on.
have been quoted stupid amounts to fix these probs,
many thanks

shelly
November 2008

You should be able to operate the pressure relief valve on the boiler manually,release pressure in short,brief spurts to correct level.

corgisteve
November 2008

have you tried the back top side left or right of the radiator maybe covered with small plastic cap?

phil
November 2008