Question about Coleman Propane Forced Air Heater w/Electronic Ignition (50,000-80,000 BTU)

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Furnace does not work when windy outside. Has an electric ignite, it either won't kick on at all, or it just blows cold air. The slightest breeze will cause it to not work. When there is no wind it works great. Right now I can see flame, and it is running but only cold air is coming out. What could be wrong?

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Hi,
The problem is withthe venting. Your vent pipe goes out of the house in such a way as to catch the air when it is windy and cause the pressure switch to cut out. The flame may only run for a short time, then shut down and then restart. The heat exchanger never gets hot enough to give you warm air.

Check where the vent pipes exit the house. Try adding on an elbow and turning it so that the wind cannot blow back the pipe. Turning it down towards the ground often is good. Make sure that the exhaust cannot recirculate back to the intake pipe also.
Also check that there is no water build up hanging in a pool where the vent pipe may have sagged a bit. this will make the pressure switch much more sensitive.

I hope that this will help you to solve your problem!

Thanks for using Fixya!!

Heatman101

Posted on Dec 11, 2009

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