I have a problem with my Ariston euro-combi boiler,the shut out light comes on when the boiler has been off for longer than 2 hours,it does not happen when it is in its evening sequence but after a few hours say from 10pm last operation to 6am in the morning the shut out light appears when it is supposed to come on.If i press the shut out button a couple of times the boiler fires up,please can anyone help.

David William Pratt, March 2011