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Central A/C Outside Unit just humming

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07-11-14, 08:29 AM

marragtop

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Central A/C Outside Unit just humming

Hi: I'm new to this site and of course I have a problem. I have a Trane 14XLI unit that the AC stopped working on yesterday. The outside unit just hums. The fan is NOT locked up and will engage and run if I push start it. But still no cold air. I suspect the compressor is not kicking on. I realize that push starting the fan is esentially bypassing the capacitor. Now my questions: are the fan and the compressor controlled by the same capacitor? I took the side cover off and can only see I capacitor. Is there a way to temporarily bypass the capacitor to see if the compressor will run? Thanks in advance for any responses.

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07-11-14, 08:49 AM

skaggsje

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No, you don't want to bypass the cap. Yes most units use a dual cap ( 2 caps in one).

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jtstp17 on Jul 06, 2014

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