davidwort 0 Posted February 5, 2007 New thermo switch made no differance, so unplugged switch tested a digital voltmeter over the three wire contacts only one read 12v. So i assume fan is running on one speed, that being slow run. Looks like the garage for me. :cry: ??? the circuit is only completed at the appropriate temperature, so if you're getting 12v across one path that one's shorted? Quote Share this post Link to post Share on other sites
