A/C condensor won't turn on

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Old 10-02-16, 09:45 AM
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A/C condensor won't turn on

I turn the breaker on and off.

We had an issue with our compressor and fan last month where they wouldn't turn on. I changed out the capacitor thinking they wouldn't both go out at the same time. Everything worked.

Then, today the same thing. I thought it was odd that another capacitor would go out so quickly. So I tested flipping the breaker off, then back on. After a 5 minute short cycle it kicked back on.

Any ideas why it would suddenly start doing this?

Thanks,

David
 
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Old 10-02-16, 11:25 AM
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Is the breaker tripping? Let us know.
 
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Old 10-02-16, 12:03 PM
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No it does not flip. It just happened again that it won't turn on. This time flipping it manually did not work. I wonder why changing the capacitor previously "fixed" it for about a month. There has to be an underlying cause.
 
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Old 10-02-16, 02:05 PM
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the compressor could be going off on internal overloads. Which means its getting to hot. Could be low on refrigerant.
 
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Old 10-02-16, 02:38 PM
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I'll look into that. The only thing I question about that is the fan and compressor are on different capacitors. Wouldn't the fan turn on still?
 
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Old 10-02-16, 03:43 PM
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You're guessing at the problem.

You need to confirm that the contactor IS actually closing and the fan and compressor aren't working. It sounds like more to me a defective/corroded contactor.

I would check for 240v at the incoming line side of the contactor and then again on the outgoing side.
 
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Old 10-02-16, 04:57 PM
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Thanks. It's pouring right now, but I will check that next.
 
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