Jbd Profile Topics Started Replies Created Engagements Favorites Search replies: Forum Replies Created Viewing 1 post (of 1 total) Author Posts July 13, 2014 at 8:27 pm in reply to: SMEG Opera A1.1 intermittently trips MCB. #416611 JbdParticipant Re: SMEG Opera A1.1 intermittently trips MCB. OK, so the order should be – clock, changeover switch, thermostats, elements. How do you suggest that I isolate this fault now? Author Posts Viewing 1 post (of 1 total)