Rear fan spins, front does not?

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Article #3434

#3434

From: Karl Dieter
Date: Fri, 21 Sep 2001 23:21

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I'd appreciate other people's thoughts on this as I can't seem to locate any
web pages on the subject...

I have built a PC using the following:

1) Intel D850GB
2) 2 x Nidec 120x120x25mm fans
3) ...and other things

The problem (if it is a problem), is that the rear fan spins fine, to pull
out the hot air from inside the case.  The fan at the front never spins to
draw in cool air.  Now I know why, it's because the sensor for the front fan
is so low down in the case, it doesn't detect any heat and doesn't spin.
Where-as, the rear fan has it's sensor at the top of the motherboard, where
the processor & RAM are, and there-fore spins all the time.

Now is it normal to have this setup?  I basically have the rear fan spinning
all the time, and the front fan never spinning, as it's sensor doesn't
detect any heat.  I would have thought to have a constant in-flow of cool
air would be a good thing.

Anyway, thoughts and comments appreciated.  The system works perfectly, I'm
just wondering why I have a front case fan that appears to be never used.

Regards.

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From: "Karl Dieter" <nospam@mydomain.com>
Newsgroups: alt.comp.hardware,alt.comp.hardware.homebuilt,alt.comp.hardware.pc-homebuilt,intel.motherboards.other
Subject: Rear fan spins, front does not?
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