Posted by Kirk Grau on December 27, 2015 at 12:30:21 from (73.52.92.113):
At least it is still relatively warm...
Couldn't find my VOM yesterday so went in to town for some errands and picked up the cheapest meter I could find. Followed power to the terminal for the fan after church this morning. Have power going to the fan and fan spins freely. Carefully reached in and gave it a spin while it had power and the fan accelerates, but very slowly and never gets up to full speed. Burner cycles on, but I think it is cutting out on the high temp switch due to the lack of airflow resulting in higher supply air temp.
Anyway is a start capacitor going to remedy this or am I looking at a full motor replacement? Either is kind of a bear to reach, but at least I can see the capacitor mounted on the fan housing. Looks like I would need to actually pull the fan out to get at the motor. It is a direct drive fan with the motor mounted inside the fan scroll.
Thanks for the previous responses. Going to be colder tomorrow, need to decide if I am going to call a service guy or not. If it seems like the capacitor will do it I would probably do that myself. I'm cheap enough that I would do the motor too, but tomorrow is a work day and I'm not sure I can take the time to do it. Wish the supply houses would have been open this weekend, but with the holiday there hasn't been a way to get parts since Thursday.
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