AC compressor problem

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Old 09-05-08, 07:03 AM
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AC compressor problem

Last night my Ac stopped cooling suddenly. Now, the compressor will not shut off even when the thermostat is not calling for cool air. Any suggestions on what might be wrong? If the contactor was stuck wouldn't it still produce cold air? Thanks in advance for any help. Anthony
 
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Old 09-05-08, 08:50 AM
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Need more information to pin point the problem. Inside fan running ? outside fan running ? ...... BUT, FIRST, shut down the compressor first before it get damaged (disconnect the power if you have to), and go from there.
 
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Old 09-05-08, 12:26 PM
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If the contactor is stuck, the outside unit will run all the time and the inside unit will be off (assuming Tstat not calling for cooling). You won't get cold air if the inside fan is not blowing. Your outside unit might freeze up and the head pressure might get high enough to damage your compressor.
 
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Old 09-05-08, 01:13 PM
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Thanks for the responses. The fan in the compressor runs all the time if I leave it powered and the fan in the house runs when the Tstat calls for it. I ran it for a while this morning and did not feel any heat coming from the fins on the compressor like it usually does. Thanks again, Anthony
 
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Old 09-05-08, 06:52 PM
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Sounds like contactor stuck/welded closed outside. Outside chance that stat is not breaking the "Y" connection which would also keep the outdoor unit running.
 
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Old 09-05-08, 07:18 PM
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May be more than just contactor problem. Are you sure your compressor is running all the time, never stop ? If that is the case, why stop cooling? Can you tell us the two lines go into the compressor (big insulated one and the smaller copper one) feels hot, cold, or warm ? while your compressor and fan are all running.
 
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Old 09-06-08, 05:20 AM
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Hi, The lines are not hold or cold.
 
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Old 09-06-08, 07:41 AM
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If your compressor and outside fan are both running, but the lines are neither warm(hot) nor cold, You need to check the freon level first . then go from there.
 
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