I have an interherm electric furnace which was practically rebuilt new limit swithces new sequnizers new fuses new fan and all new wires running to elements and switches, it has worked great for the past four years since the rebuild and then the other morning I woke up to a house full of smoke I opened the front panel and some of the wires were burnt, one wire running from the element to the seqenizer and the other from the fuse to the sequnizer, could it be in the element or is in the limit switch not working? I don't know trying to get some ideas before I get a repair man