Question about Heating & Cooling
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Posted on Jan 02, 2017
look at circuit board and follow wires that come from fan motor, if this is a standard motor black is high and it will be going to a prong that says cool, red is low and it will go to heat, you will have a yellow and a blue that are "parked" remove red park it were the blue is and put blue on heat, if this is a variable speed motor you will have to set dip switches via your equipment manual
Posted on Sep 30, 2009
Yes. If the high limit is tripped, the furnace will bring on the fan continuously until the limit resets. Often, they will not reset if tripped repeatedly. If the furnace is too large for your application, you probably are not able to move enough air to keep the heat exchanger cool enough.
Posted on Oct 03, 2009
Usually a bad flame sensor will cause this problem.
You can either replace it or clean it with some extra fine steel wool.
Posted on Nov 16, 2009
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