WHICH CAPACITOR TO USE WITH CARRIER 38BRC042330

that is the classic symptom that the Start/Run Capacitor has failed. They give the motor a jolt to get them moving.

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If you're not familiar with working with electricity, or run capacitors, please do not attempt. If you internet search, dual run capacitor, and search by image, you'll learn what a run capacitor normally looks like(if you're not sure). Most all condensers have an electrical "panel", where most all electrical components are installed. Please be advised, run capacitors are know for electrocution! Call a professional if you are not certain.

Where is the capacitor connected? To the compressor, inside fan or condenser fan motor. The value of the capacitor is stamped into the metal housing of the capacitor.There will be a number followed by the letters mfd

Capacitors are rated uf and voltage (35uf 5uf 370 volt) should be right for your unit but the size will be on the old capacitor.

A 3.5-ton Carrier CK....OK the run capacitor will be a 370 volt variety, likely 20 bucks tops....given that this is SINGLE capacitor dedicated to the compressor ONLY. A BIT more if (as is likely) it is a 3-terminal compressor/condenser motor capacitor. I assume you mean 'contactor' and this toy should be another $30+/- $5. (Hopefully the diagnosis you got was correct!) That aside, MOST folks in the residential realm use some sort of "flat-rate" system. Replacing the capacitor is ONE job and the contactor is another. If this is a commercial property (OR if you are aligned with a commercial entity), look for a contractor that will make the repair on a "time and materials" basis. One trip, 2 parts...time element should be MINIMAL. Good luck!

Your 3 phase unit should not have a capacitor. I'm guessing it's single phase. If it's a single capacitor than the compressor should not be going to it also. To test the motor, common to start plus common to run should equal the ohms you get between start and run. For instance, 1.2 ohms+ 2.2 ohms= 3.4 ohms. Follow the wiring diagram on the inside of the door, send model number!!

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

http://www.searspartsdirect.com/partsdirect/part-model/Carrier-Parts/Air-conditioner-heat-pump-Parts/Model-38CKC036300/3079/0904000/50025647/00004

Item #18 is your capacitor.

Look at the old capacitor. The mircofarad rating should be printed on the side. If you can't read it then take the capacitor or the model # with you to a heating and air dealer the sells Carrier products. The repairman should have put one it for you.

there is a run capacitor is probably bad.
you can purchase a replacement one from slakey brothers. However the capacitor will still have a charge after the power and wires are removed. after turning off the breaker use a long bladed screw driver and ground the electrical leads to discharge the capacitor before removing. take it with you to the supply house along with the model and serial number of the condensing unit.

What exactly does it do? If it buzz and don't turn a starting capacitor will not help, this is an indiction of a shorted motor.