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Old 04-25-2009, 07:27 PM   #1
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Possible compressor issues???


Ok, so I turn on my ac for the first time this year. I notice it's not cool. I also notice outside compressor fan is not turning, but buzzing. I replace the fan. It works great, however still no cooling. I take the capacitor in to be checked. It's a dual and it's bad. I replace the capacitor. Still no cooling. I remove the fuse by the outside unit. I look beside the capacitor and notice what looks like a junction box(is this the relay I have read about?) It's where all the wires seem to join. I remember there was a reset button of sorts on this, but it is already in the "in" position..but when I touch it I feel a buzz...not sure if this is normal. I also have noticed that when I run the unit for a bit, then remove the fan that the compressor is not even warm.
So either the compressor is shot or it's just not starting. I am not sure where to go from here. Any help would be greatly appreciated...at least it's going to be cool here a few more days...

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Old 04-25-2009, 07:36 PM   #2
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Possible compressor issues???


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Originally Posted by chaoskid View Post
Ok, so I turn on my ac for the first time this year. I notice it's not cool. I also notice outside compressor fan is not turning, but buzzing. I replace the fan. It works great, however still no cooling. I take the capacitor in to be checked. It's a dual and it's bad. I replace the capacitor. Still no cooling. I remove the fuse by the outside unit. I look beside the capacitor and notice what looks like a junction box(is this the relay I have read about?) It's where all the wires seem to join. I remember there was a reset button of sorts on this, but it is already in the "in" position..but when I touch it I feel a buzz...not sure if this is normal. I also have noticed that when I run the unit for a bit, then remove the fan that the compressor is not even warm.
So either the compressor is shot or it's just not starting. I am not sure where to go from here. Any help would be greatly appreciated...at least it's going to be cool here a few more days...


Check the terminals on the bottom of the compressor( make sure power is off) You may have a terminal burn off the compressor

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Old 04-25-2009, 07:40 PM   #3
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Possible compressor issues???


I am guessing this is different from where the 3 wires run into the compressor, correct? because I dont see anything running under it....
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Old 04-25-2009, 07:44 PM   #4
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Possible compressor issues???


It should have a small plastic cover over the wires.. On the lower side. not under on the botton.. Guess I should have been a little more specific.. That reset button ( as you call it) is probably the contactor.. Buzz sound is normal

Last edited by kenmac; 04-25-2009 at 07:59 PM.
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Old 04-25-2009, 07:57 PM   #5
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Possible compressor issues???


Just checked it...looks like the wires run into the rubber cover. I wedged it off and gave a quick inspection...looks good. We are going to get some compressed air and blow out the area where the contactor is at since he looks pretty dirty. Maybe it's preventing a good connection. Whats the best way to tell if the compressor is running...do I need to disable the fan so I can actually hear it?
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Old 04-25-2009, 08:04 PM   #6
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Possible compressor issues???


you should be able to hear it. If the contactor is pulled in .Check the wires at the compressor with v.m. You should get 110 v per leg for a total of 220 v. Did you wire the cap. back correctly ?

Last edited by kenmac; 04-25-2009 at 08:07 PM.
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Old 04-25-2009, 08:49 PM   #7
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Possible compressor issues???


Ok, blew it out. I shut the power off at the breaker before I did. I also noticed that the button on the contactor was out after I did that and was back in again after I turned it on. Still not cool. I'll check the voltage as you suggested since I definately cannot hear anything but the fan turning.
And I appreciate the help....
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Old 04-30-2009, 03:38 PM   #8
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Possible compressor issues???


Ok, so after further reasearch, it appears I have a leak on one of my coils on the inside of my outside unit. The compressor seems to be working fine. I disconnected the fan and when I turned the unit on I could hear a hissing sound...and I could feel air coming out of one of the coils. This unit is only 7 years old...is that normal??? Is this a repairable thing or am I looking at replacing the unit??? This sucks....
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Old 04-30-2009, 03:58 PM   #9
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Possible compressor issues???


Sometimes they can be repaired.
Sometimes they can't.

Need a tech to look at it, and see if it can be repaired.
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Old 05-01-2009, 08:16 PM   #10
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Possible compressor issues???


Everything can be fixed $$$$
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Old 05-02-2009, 04:39 AM   #11
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Possible compressor issues???


If the leak is in the copper yes it can be repaired . If in the aluminum no
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Old 05-10-2009, 11:13 AM   #12
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Possible compressor issues???


Ok, so I had a tech come out. The leak is in the copper. Here's what he said. $145 to repair and see if system will hold a nitrogen charge. If that works, an additional $500 to refill with R22 refrigerant. If it doesn't work, $3000 for a new unit. This is a 2 1/2 ton unit. Do these prices sound correct????
And again, thanks in advance for any advice you can give.
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Old 05-10-2009, 11:21 AM   #13
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Possible compressor issues???


Is that 3000 for replacing both the outdoor and indoor unit, or just the outdoor.

His other prices sound fine.
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Old 05-10-2009, 11:27 AM   #14
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Possible compressor issues???


$3000 for the outdoor unit....but it would be changed out to the 410(I believe that is right....not R22) which would involve replacing the coils in the inside unit too...
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Old 05-10-2009, 11:39 AM   #15
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Possible compressor issues???


Have to have matching outdoor and indoor unit( or at least a matching indoor coil) to get the outdoor units rated efficiency.
Weather its R410A, or R22.

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