humming noise and weird smell

The heat pump wouldn't turn on. It made a loud humming noise like it was trying to turn on, and also a bad smell came up from it. That's was alerted me to the problem. This happened during extremely cold weather. I turned it off at the circuit breaker. Should I try turning it back on?

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Dec 23, 2014
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suggestions
by: Anonymous

Starter cap?
Low charge
Slugged charge
Locked compressor?


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