Converting range from LP to Natural gas...

Two questions from a home owner who would like to do own repairs to my old Jenn Air range:

I want to convert our range from LP gas supply to Natural Gas. I was told I need to secure 1.) Left-hand Burner Kit 12200049, (AP4012743); and, 2.) Right-hand Burner Kit, part # 12200049 (AP4011330). I want to know if this is absolutely all I need for said conversion.

I have a second problem with same said range. Suddenly one day the internal exhaust fan came on and remained on. I purchased a new Jenn Air switch for said fan, installed it, and it clicked off and on as should have done. BUT, in a few minutes, suddenly the fan came on again on its own… so I must have some other problem than just the switch. Any suggestions?

Thanks! John

Gene knows his stuff, what he is saying it is not worth doing the conversion. Sometimes when there is neutral leakage(volt) in the unit it could cause the fan to come on. Use your multi tester and check if there is perhaps a volt reading on the body (when fan is running)
Pine
http://www.vintageelectricappliances.com