I had bought a used Whitfield to put in my Mom's house last fall. Cleaned it up and installed it. Ran like a champ thru a very cold winter. I must be living right ! Usually it is in the dead of winter at 3:00 AM , and -20 below.
Combustion motor wasn't spinning up to speed.Possible bad circuit board. I replaced them both. Up and running like a Whitfield should.