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Old 09-12-2011, 05:18 PM   #16
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Old furnace fan blowintg 24/7. Wiring question.

I found it here and these guys seem to have a better reputation.


If there is a problem with physical fit, is it acceptable practice to construct a metal adapter plate or similar?

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Old 09-28-2011, 10:49 AM   #17
Join Date: Sep 2011
Posts: 7

Old furnace fan blowintg 24/7. Wiring question.

OK I installed it and it seems to work. The new one had 4 wire terminals, two (optional) of which had something to do with the thermostat. In my case I just went with the original wiring where the fan runs on heat it senses only. BTW the box calls it a CAM STAT whatever that means. There is a better photo of it here out on the web:

And here too: http://www.furnacepartsoutlet.com/pr...93417_zoom.jpg

So regarding adjustment... I think the fan runs a little longer than it should at the end of the heating cycle. It tends to blow a little cool-ish air before it finally shuts off. The temp is set for 95 out of a range of about 90 to 120. That's how the old one was set(95). So should I raise the dial a bit to say 100?


Educational link for self, included for posterity: http://toad.net/~jsmeenen/blower.html

Last edited by grantb5; 09-28-2011 at 11:04 AM.
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