Question about Kenmore 75085 Air Conditioner

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Please help.... kenmore 580.74124400 AC wiring color coded for the capacitor. wires fell off and all else works compressor is not turning on

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Take a look at the capacitor. A terminal with just 2 connections is for the fan and has a small brown wire from the fan there and is usually marked with an F. The compressor portion of the cap has 3 terminals on it, usually marked as HERM for (hermetically seald compressor), a large brown wire goes there most of the time from the compressor. The other 3 wires all are white and go to the portion of the cap with 4 connections usually marked as C for common.

Posted on Jul 06, 2010

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Indoor fan barely turning


the three post capacitor has c for line voltage in, the f or fan is for the outdoor motor,and com or comp goes to start winding compressor.youll have to follow wires from indoor motor to find capacitor. to find wires to outdoor motor to capacitor you have line voltage and capacitor wires .look for schematic it would help or send colors of wires from both motors and compressor common,start .run.

Jun 07, 2013 | GE Zoneline AZ55H07D Air Conditioner

Tip

COMPRESSOR check outs semplified.


Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} If your wondering how to check out your refrigeration compressor;
Modern Compressors have two operations that have to work together just to run. More items must be considered for them to work and work efficiently in systems. The 2 areas that must work together are electrical and mechanical. Either your compressor is broken inside or the motor and or start components are not working properly.

Electrical
Ohm the compressor terminals to ground and across to each other.
1. If any read anything to ground the compressor is bad. If not go on to the next step.
2.Your readings between the compressor terminals should all be different and you should have 1 low 1 medium and 1 high resistance reading.
Add the low and mid reading together and the sum should be close to the highest reading. If it reads say 20% more or less then retest it a couple of times to confirm your not slipping on the terminals. If you get only 2 readings don’t panic wait 24 hours for the motor to cool off for sure and recheck it. If still no reading then your compressor motor is open. A new compressor or replacement of the appliance is required. If you now get the 3 readings described make a diagram you feel comfortable with as to where the wires go to each component before removing anything, then continue:
3 Assuming the above checks out: Get a new *Start relay *start capacitor if so equipped relay *external overload and *run capacitor if it has one. In other words everything that is external and attached to the wires or terminals on the compressor or wiring per your diagram and replace them on to the compressor. Then if it starts problem solved if it still does same thing the compressor is bad (broken mechanically inside the compressor) and you have to decide to replace compressor or replace the refrigerating compressor be it AC or Refrigeration.

*May or May NOT have this component:
*Start Relay:
MOST 99.999…% of refrigerators of the household type have a start relay of some kind and they vary in size shape and color. It plugs directly onto the compressor. SOME AC units but not all have one and it is different. These Resemble a box about 2”X2” X 3” with at least 3 terminals on it and these 3 terminals are marked 1, 2, & 5. Each of these will have at least 1 wire on them and there may be other terminals (4 & 6) as well that can be used with several wires on each.
* Start Capacitor
100% of AC and Commercial compressors that use a start relay (and remember some do not have one but those that do…) and only some domestic refrigerators use a Start Capacitor. At least 2 wires going to a black (usually) cylinder which is the start capacitor. Start Capacitors ALWAYS HAVE 2 or more Wires and ALWAYS HAVE TO HAVE A START RELAY.
*External Overload
MOST 99.9% of Household refrigerators, 80%+ of smaller commercial refrigerators, and most 90% of window unit AC’s but almost no central AC compressors Have an external overload. Those that do not have an internal overload. These vary in size and color and description a basic one is round 2 wires and generally black about quarter size USA AND IF USED ALWAYS MOUNTED ON THE COMPRESSOR with the other wires and terminals there.
*Run Capacitor
Some domestic refrigerators (can be a small rectangular box) medium and larger refrigeration and (99.999%... of all) AC central and Window units have a compressor that requires a run capacitor. These type units also have a fan motor that can require a run capacitor. These Capacitors always have at least 2 wires and often 3 or more if the capacitor also is wired to the fan motor.
.
If a compressor is tight due to linear expansion from heat a tip worth remembering is as something cools it contracts, except for water at freezing. A few times I have gotten a compressor to start after leaving it off for 6 to 12 hours then retrying it. See the compressor unless left off for 6 to 12 hours and sometimes as long as 24 hours may have expanded parts from heat. About 1/2 the time it is ok after new start components are installed with a start capacitor and relay. The other 1/2 the compressor will be ok for a day or 2 then stop again. A “hard spot” in the movement of the internal parts in the compressor, and stopping on this hard spot it can’t overcome the “tightness”.

If you follow most of these steps above you will arrive at a correct diagnosis well over 90% of the time ( allowing for what is unusual or for misunderstandings)

30 years of doing refrigeration and this has not changed..
Please rate me as high as you can and ask me to clarify anything you don’t understand.

on Apr 15, 2009 | Carrier 38BRC036 Air Conditioner

1 Answer

Looking far data sheet or equivalent circuit/connection diagram for a 97F9834 capacitor


You can find a datasheet located here. Page 14 contains your capacitor's information. As for a connection diagram, it's fairly simple. The dual capacitor (three prong) has a connection for fan, compressor, and common. Common (typically white) goes in the middle, compressor goes to herm, fan goes to fan. You should see the labels etched into the metal either on the side, top, or bottom. As for the colors of the fan and compressor, the brown wire should be for the fan, and the compressor's wire should be yellow. Of course, your system should contain a wiring diagram, which is usually attached to the door. Consult this diagram before assuming any wire colors I tell you are correct. Also, you should have some form of cutoff switch. Ensure this switch is OFF before doing ANY electrical work on your system. 220v in AC units WILL KILL YOU, especially coming off the capacitor. Best of luck!

Tj

Aug 18, 2011 | GE Heating & Cooling

1 Answer

Roof top Ac the commpressor does not seem to be kicking on fan works any thoughts.


Several things can cause this. The most common are a bad compressor, burned off wires, and bad capacitors. Turn off the power and check your wires in the control box and at the compressor. Look at your capacitors for signs of bulging. Replacements can be purchased at local ac or electrical supply houses.

Oct 09, 2010 | Coleman Heating & Cooling

1 Answer

Split AC capacitor fused.


You need to trace the wires back to the device ie compressor, the fan now then write the color down. Note the capacitor has two different sides to it herm which is compressor and fan. then the common in the middle. Take the compressor wire should only be one and connect it to the herm. Now take the fan should only be one again and connect to fan. two devices connected. You might have two more wires and they go to the common. If you need any more help just get back to me. ken

May 09, 2010 | Samsung AW0603B Air Conditioner

3 Answers

Please help our ac compressor wont come on


Hi, did you change, capacitor for compressor too. check compressor overload switch,(relay) normally located on compressor terminals, (where you connect wires to compressor) that's the device that goes klix when compressor goes to start, could be faulty, or maybe low voltage from your mains(house panel) check line voltage, with digital volt meter, some compressor won't start if voltage drops to low, yes fan will work, could also be, your compressor has a lock rotor, (hard start), you can buy a compressor hard start kit, from appliance store, and try to start compressor, or maybe compressor internal winding, are damage, especially now in summer, when you got a lots of voltage drops, check compressor winding, check compressor winding for short circuit, remove cover on compressor, remove 3 wires from compressor terminal, use ohm meter, put one tester lead on copper tubing that's connected to compressor, and next lead to compressor terminal, one by one, if you get beep (continuity) from anyone of those compressor terminal, you got a short- circuit in compressor, you will have to replace compressor, but if there's no short, them try hard- start kit, replace overload relay, you will see it at compressor terminal location, after you remove cover. good luck.

Aug 10, 2009 | Heating & Cooling

2 Answers

No cool air


It is the capacitor write down the wiring colors to the capacitor and then disconnect the safety disconnect on side of house. And even turn off the breaker to the condensing unit. Okay now that no power is going to the unit take out the capacitor you wrote down what wires went where and ohm out the herm side go from the center post to herm side. Should be bad wont get a reading. Get new capacitor and re install. good luck ken

If not capacitor get back to me. And please leave good feed back

Apr 29, 2009 | Coleman Heating & Cooling

2 Answers

Fride not cooling on eather side..


I believe your start relay and capacitor need replaced or the compressor is defective. Don't allow it to continue to try to start until we can find the problem. Let me know, Sea Breeze

Apr 23, 2009 | Maytag MZD2766GES Side by Side...

1 Answer

I am a ac tech, and i was working on a old carrier unit, wich had no schematic diagram. I need it in order to get the compressors going. if i give you a model # can you please provide one. roof top ac...


you aren't an ac tech number one but i shall overlook that . your question is llike will the sun come up in the north or the south tomorrow. obviously in the east as it has since the earth was created. anyway. all compressors since the beginning of time wire up the same .a wire commonly referred to as the common goes from the contactor to the compressor. usually black in color, hence the old coloqualism Blacks are common. the run wire is from the contactor to the run side of the run capacitor or from the contactor to the run connection on the compressor. hence the old slogan reds run when you point a gun at them. the only wire left is the start wire that come from the start capacitor and is usually yellow . hence the old saying blacks are common, reds run, and yellows are always starting something. very ethnic i know but thats how i was taught.now that the wirings correct check to see volts through contactor are correct and if one side of contactor is not feeding. if volts good then check capacitors with a cap checker. if all else looks good kill power and inspect compressor terminals at compressor. if burned off consider a termilock kit good luck..

Jul 19, 2008 | Goodman CLQ36AR49 Air Conditioner

2 Answers

Kenmore refrigerator PTC relay for compressor


This is for a Kenmore PTC relay that I just pulled from my fridge. It dosn't have an ice maker. Hope this helps.

Pin 1 = White
Pin 4 = Blue
Gold Pin = Red

Oct 19, 2007 | Kenmore 73502 / 73504 / 73509 Bottom...

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