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Trane voyager rooftop second stage contactor keeps blowing coil it fries ////after a week or so sometimes longer or shorter wont pull in and seems to weak to pull in but when i put a seperate contactor out of line for test purpose it will pull in no problem

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Hi,
One of the safety switches in the control circuit for the secind stage are bad... the contacts are pitted or corroded and are not passing the full voltage through...it will be hard to find the bad one because it will only do it under load...I would start jumping out safety switches for a short time and checking voltage to the coil til you find the culprit...

heatman101

Posted on Aug 21, 2010

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