I wanted to thank Yuri and Beenthere for replying to my post a couple weeks ago. The electric company was very helpful and came out and put a recorder on for about ten days. There is something going on but the engineer is a little puzzled as to just what it is exactly. He thinks that one side of the 220 is fluctuating and the other is stable. They are coming out again and doing some sort of test at the meter to see if it is on their side. I'm thinking that if it's on my side then perhaps its where the two sides of the double wide are connected, perhaps one of the connections is getting some corrosion. Meantime I'm turning my furnace off when I leave the house and using the space heater as I don't trust the furnace. My heating guy sent another invoice and wants no more to do with trying to figure out what is taking out the sequencers.
Glad to hear you are narrowing down the problem. I understand your htg guys frustration as I have been there many many times.
If you suspect some poor electrical connections at the double wide joint you may want to get that checked ASAP as poor connections create heat and fires and can be VERY dangerous.
"Cut it twice and it is still too short".