Blower fan(NOT inducer fan) comes on first

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Old 11-13-19, 07:54 AM
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Blower fan(NOT inducer fan) comes on first

I have a Comfortmaker N9MSB060 1412B1 furnace that the blower motor (not inducer motor) comes on first and then nothing. Jumped accross thermostat, nothing. Tested inducer motor by connecting to 120v, it runs. Why is the blower motor coming on out of sequence? it should be at the end of sequence NOT the beginning.
 
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Old 11-13-19, 10:34 AM
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An open limit can cause that.

Does it give an error code?
 
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Old 11-13-19, 09:32 PM
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Welcome to the forums.

There is a fault notification system there. You'll need to follow it to locate the problem.
In the link...... look all the way down at the bottom and the heating system is discussed.

N9MSB0x0 manual (pdf)
 
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