(re: tripping 40A breaker) It sounds like a faulty fan to me. When under load something is overheating (board warpage?) and doesn't quit until it cools down enough. Just my WAG. I had a Ford ignition module do this to me once and it drove me crazy until I finally found it. It would test fine when cooled off. Wiring? on fan reversal.
Last edited by GySgtFrank; 06-23-2012 at 02:35 PM.
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