New Cougar - Furnace wont heat above 60
Just took delivery of a brand new Cougar 33SAB travel trailer. For some reason the furnace will not heat the inside of the unit to more than about 58-60 degrees... its been about 25 degrees overnigh...
Forum Discussion
wasatchmtnatvr wrote:
Please post model number of furnace. This is important. Either furnace hitting high limit switch which cause an open circuit, which deletes power to circuit board, ceasing flame operation, and flame will shut off. When limit cools contacts close, causing power to circuit board, 24 seconds later, flame will re-appear. When this sequence occurs you feel cooler air than hot , but it will not be cool air. Cause, inadequate air flow usually caused by not enough heat discharge ducts for furnace to vent heat out, or breathe. If soft ducting you should have a minimum of 4 full size tubes coming off of furnace shell and registers fully open at discharge within interior. Virtually every furnace will work better if you can install an additional discharge warm air duct.
Its a Suburban, but I cant find a specific model number in any of my documentation or visually on the unit itself. Any tips on how to identify it? I think it might be an SF-30FQ, which the book says should have a minimum of three 4" ducts...
Its got three 4" ducts coming off the back and two smaller 2-2.5" ducts coming off of one side (with spots to add two more ducts on the other side). I even removed the floor vents so the air flow was totally unrestricted. The fan seems to be pushing a strong amount of air at all of the vents.
