Question about Goodman CLJ30AR32 Air Conditioner

2 Answers

I have an older Goodman CKB 18-1

The AC stopped working today. the indoor blower works the thermostat seems to be fine. I walked outside and listened. The fan blades do not turn, i felt the top of the unit and the metal was hot. The blades turn free. I heard the sound of the electric motor try to start, it just humed blades did not move. never heard the compresser start. Tuned off thermostat to prevent any further damage.

Question 1: If the fan motor is burned out, will it (as a safety feature) prevent the compressor from kicking in. do they run independantly?

Question 2: Are there any onboard fuses, capacitors etc.. that could have blown to stop the fan motor? ( i hear humming from the motor )We had a severe thunderstorm.

I can change the fan motor myself if it needs it. Doesnt look difficult and easy to get to but i need to know if a bad fan motor will effect the compressor from turning on.

the unit worked perfectly until today.

thank you,

Charles Smith

Question 3:

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  • 2 more comments 
  • ckmj1 Aug 04, 2009

    Thank yo so much for the reply, there is one capasitor. The humming sounds like the motor itself. can power go through a blown capacitor? it looks very easy to replace. nothing looks burnt, bubbled etc....

  • ckmj1 Aug 04, 2009

    http://picasaweb.google.com/lh/photo/1Ow... this is a link to the picture of inside the service panel.

  • ckmj1 Aug 04, 2009

    http://picasaweb.google.com/lh/photo/1Ow... this is a link to the picture of inside the service panel.

  • ckmj1 Aug 06, 2009

    I would like to thank you so much! it was the capacitor. Our local guy ordered it for me, i picked it up and installed it. 15 min and it is working.

    Sincerly,

    Charles

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FOR QUESTION 1: They do run independantly. What will happen when your compressor is running but your outdoor fan does not, the pressures in the system will go really high and compressor will overload. That outdoor fan is used to disipate all the heat that is transferred from the inside to the outdoor unit.
FOR QUESTION 2: If you hear humming it can be 2 things. FIrst one is that that capacitor went bad. Dependiing if its a dual run capacitor(which helps both compressor and fan motor) or they both have individual capacitors. The second would be a bad fan motor. OPen your service panel outside to the AC. Find your capacitor for you fan motor. if there are 2 , locate the one that goes to your fan motor. Check it out(if its blown physically youll will notice it like really bubbled, like swollen) then change itout. Or you will have a dual run capacitor that runs both compressor and fan motor. It will have the terminals marked (Fan, Common, Herm) Bsically check your capacitor mfd(micro fared rating, it will say on the capacitor what its rated) Get a multi meter and put in the "MFD' selection. Before you check any capacitor you have to discharge the the voltage charge it has. Use an insulated handle screwdriver and just place the metel part across the capacitor leads. Basicall short them out. Then proceed with checks...hope this helps( remember to always pull the disconnect out from the box outside to cut power)

Posted on Jul 30, 2009

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  • leanos325 Aug 04, 2009

    yes, the capacitor stores voltage to "KIck start" the compressor and fan motor. If you its loosing its mfds, then you it wont have enoung "KIck" to start which ever side isnt working properly. In this case your fan motor. Ok, you said only one capacitor is in the service panel? then you have a dual run capacitor which runs both your compressor and fan motor. I would still try to checking it out first with a multimeter that can read MFD. ( In my last messege i sent you i explained how to check it. If you do want to check it refer to my last messege. ) They can still go bad without showing physcal damage. But check out tha capacitor if you have a multi meter. If you just wana change it out then go ahead and do so. Its less expensive then the fan motor but then again, if the capacitor isnt the problem then i would assume its the fan motor. And to be honest, whenever i change a fanmotor, i tend to put a new capacitor as well. But some people just change the fanmotr. It all depends on the person. But I like to change both since they are both working with eachother. Hope this helps.

  • leanos325 Aug 04, 2009

    so its me again and i didnt see see that link of the picture you sent. i just did right now. make sure your contactor is pulling in ok. Its the squar component where the power comes onto. then you have the 2 purple wires hooked on the side terminals. The theremostat wires are wire nuted together with the purple and then the purple are conected to the side termical of the contactor. You have whiteand black conected on the bottome of the contactor and blk and red on the top. Whne the thermostat calls for coolin it sends low vltage to the purple wire, which energize the coil winding in the contactor, which pulls in the contacor and allows the voltage fron the blk and white flow thru the top blk and red. Make sure that when you call for cooling you see the contactor pulled in. The center of it should if your looking at it should be pulled in. But anyways, i dont think thats bad but jus wanted to explain how that works and what that does. Try doing this: Pull the diconnect from outside out the panle. Go inside and call for cooling. GO back outside and then put the diconncet back in the panel. the compressor should start but the fan shoul still be actin up right? This test is to see if you comressor sill works. If it doesnt then try changeing the capacitor. pull the diconnect off and go turn off the thermostst...and put the disconect back where it was. let me kno if you have anymore questions...more than happy to help

  • leanos325 Aug 06, 2009

    Glad to help!!.I also do washers and dryers, so if your ever have questions, feel free to ask and ill do my best to help.

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There could be several reasons why the fan motor is not working. Could be the start capacitor for the fan.Could be a burned up motor. Could be a fuse. To answer your questions, the fan motor and the compressor start at the same time but what happens is the compressor will shut itself off due to high head pressure because of no heat dissapation from coils.This is a safety feature to prevent compressor damage. You can access the fuse and start capaciter behind the service panel on your outside condensor, however, you could end up spending a lot of needless money buying parts and still have the same problem. If you do play the guessing game, replace the start capacitor first as it is the least expensive.Next ,check all fuses with on ohm meter. Good luck and hope this helps

Posted on Jul 30, 2009

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