central a/c

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Old 09-06-09, 01:12 AM
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central a/c

can anyone tell me why my a/c compressor keeps tripping the circuit breaker after it is on for 30 minutes or so?
 
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Old 09-06-09, 07:40 AM
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What is the amperage rating of the ckt breaker and what size breaker is specified on the a/c compressor's nameplate?

If that checks out, measure the voltage at the contactor when the unit is running. Lower voltage will cause the compressor to draw higher amps.

Check the capacitors for the compressor and fan.
Doug
 
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Old 09-06-09, 10:36 AM
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Smile

Thank you so much,I will have it checked,and let you know if it does the trick.
 
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Old 09-06-09, 07:21 PM
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[QUOTE=roro1127;1616437]Thank you so much,I will have it checked,and let you know if it does the trick
 
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Old 09-06-09, 07:30 PM
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Originally Posted by gilmorrie View Post
What is the amperage rating of the ckt breaker and what size breaker is specified on the a/c compressor's nameplate?

If that checks out, measure the voltage at the contactor when the unit is running. Lower voltage will cause the compressor to draw higher amps.

Check the capacitors for the compressor and fan.
Doug
how do i check the capacitors for the compressor and fan?
 
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Old 09-06-09, 07:37 PM
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Is the compressor or the fen getting extremely hot? Is the coil clean? A dirty coil will cause the compressor to overwork and trip the breaker.
 
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Old 09-07-09, 07:53 PM
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the breaker is not tripping as I first thaught,cleaned the coils,had brother check it. seem to think it is the capacitor. can make it run manually,but won't come on using thermostat.
 
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