Air conditionin gunit keeps tripping breaker. A/C is carrier 5 years old compressor?

What breaker? The breaker for the condenser? Likely have a compressor shorted to ground or drawing locked rotor amps. Easiest way to tell is make sure breaker off, unhook compressor wires from contactor. Turn on breaker and turn on machine. If the breaker does not trip, obviously problem with compressor

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

The hum is probably the compressor running. Could be the capacitor or a bad fan motor. A bad motor will usually trip the breaker.

The start capacitor isn't doing it's job

You need to use a CLAMP tester to check the CURRENT factor on the compressor. If this is HIGH then the compressor motor, the compressor or the capacitor is faulty.
Please couple a caapacitor to confirm , if not the compressor needs an overhauling.
check if there is leak on the motor body that makes the circuit breaker to trip.

Hi, if that is a 2005 carrier condenser, it may still have a warranty on the compressor. You need to copy down model and serial #, call the local Carrier rep and ask. That is your right to do so. The fan is probably not in warranty, but it is definitely worth replacing if it is bad. I sold carrier for 15 years, and sold many with 10 year parts warranty. First thing you need to do if you haven't done so is check on your warranty! If you can explain what it is doing a little more in detail I could probably tell you exactly what is wrong. Hope this helps.

the start capacitor on the motor body is weak,the motor needs this component to over come the air pressure when cycling to re-build the low air pressure,change both the start and run capacitors when doing the start because the other run capacitor is just as old and it will soon fail

Check compressor is taking correct amps, if high amps due to capacitor weak, replace it. And also check for any short circuit in wiring.That is also the reason for breaker tripping.
Finally,
Remove power. Check compressor terminals after removing wiring, When your ohms read something between any terminal and grounding, it's understood that compressor grounded. Replace it.
If windings reading should be : SR should read the total of CS and CR (C=COMMON, S=STARTING,R=RUNNING). If the total is higher or lower, the compressor winding is weak. That time it takes higher amps and breaker get tripped.
Hope helpful?

Hi what has happened is, this is a heat pump. The main breaker keeps tripping because the compressor is shorted. I hate to give you this news, but anytime a unit keeps tripping the main breaker on a heat pump, the compressor is either locked up and drawing enough amps to trip the breaker, or it is shorted internally. This is something that you will have to call a tech out on. I am sorry to give you this news, but this is all it could be. If it came on for a minute blowing cold air, the compressor wasn't running due to it being shorted out. This is your only choice is to call someone out to check it. If this is a older unit, you may be better off replacing the outdoor unit. If not, get an estimate on a compressor change out. I wish you all the best on this, and I know this is bad news, but these things always happen at the wrong time of year. Please keep me posted.
Sincerely,
Shastalaker7
A/C, & Heating Contractor.

Sounds like something is going on with the compressor or the outdoor unit. Call a service company