Re: cooling fan keeps blowing fuses - Saab 9000 Bulletin Board - Saabnet.com
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Re: cooling fan keeps blowing fuses
Posted by Lu [Email] (more from Lu) on Tue, 31 Aug 2004 05:18:12
In Reply to: cooling fan keeps blowing fuses, Richard Dickinson, Mon, 30 Aug 2004 20:21:07
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If you have the two speed fan (resistor mounted on fan motor frame) it could be not working on Low and trying to start on High which will take the fuse. Resistor can be open or relay, wiring, or thermoswitch bad. On a 2 spd system the low has to make first, it holds all the time and then the high speed makes so the rolling motor takes less than the 30A fuse will blow at, but it starts only on High it will open the fuse.
If you don't have two speed then da motor looks guilty. Disconnect motor though, power up circuit by pulling relay - removing cover - plug relay back in - manually push relay communtator to make connection and see if fuse blows. This tests the wiring to ground short possibility.
posted by 12.221.113...
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