Where is the breaker on my carrier fy4anf024 unit

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

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that would be no 230 volts to outside unit. chek breaker or fusible disconnect.

Have you checked the power source for tripped breakers burnt, a burnt fuse etc?

If this is a split unit there is two brakers one in the house at the panel and one at the outdoor unit it should either have fuses or a breaker inside the box.

Check with your contractor to see if their repair is warrantied. If it is not call someone who carries a warranty and satisfaction guarantee on repairs. It is likely that you got a bad capacitor, however, this typically will not trip a breaker. It's possible that other issue(s) caused the capacitor failure.
How old is this unit?

I would look a faulty breaker. If you're replaced the breaker and the problem persists, I'd look for either a floating neutral or open ground. A neutral/ground problem is doesn't have to be near the equipment but closer to the feeder panel.

what kind of unit is this?The breaker could be popped.

Breaker has popped either at breaker box or at the safety shut off switch. Fuses are blown or the sending unit has popped.

After considering the application work, determine the carrier on which the breaker will be installed. Gorilla Hammers has assigned a 'Recommended Carrier Weight' range to each breaker. If the operating weight of the carrier falls within this range, the carrier will safely handle this model of breaker. If the desired breaker falls outside of this recommended carrier weight range, the carriers lifting capacity and oil flow will need to be verified to ensure a proper fit. Lifting Capacity: Provided the weight of the breaker does not exceed the maximum lifting capacity at any position, the carrier is assumed to be stable. On most loader backhoes and excavators, the maximum lifting capacity is lowest when the boom is at full reach. This is the value that must be compared to the operating weight of the breaker. Oil Flow and Operating Pressure: A required oil flow range is specified for each breaker. Oil flow to the breaker within this range is adequate for operation. However, for maximum productivity the carrier should be capable of providing the maximum required flow. Compare the maximum oil flow requirement of the breaker with the oil flow capacity of the carrier. Remember the breaker operates at 1500-2500-psi. therefore, oil flow should be evaluated at operating pressure.

After considering the application work, determine the carrier on which the breaker will be installed. Gorilla Hammers has assigned a 'Recommended Carrier Weight' range to each breaker. If the operating weight of the carrier falls within this range, the carrier will safely handle this model of breaker. If the desired breaker falls outside of this recommended carrier weight range, the carriers lifting capacity and oil flow will need to be verified to ensure a proper fit. Lifting Capacity: Provided the weight of the breaker does not exceed the maximum lifting capacity at any position, the carrier is assumed to be stable. On most loader backhoes and excavators, the maximum lifting capacity is lowest when the boom is at full reach. This is the value that must be compared to the operating weight of the breaker. Oil Flow and Operating Pressure: A required oil flow range is specified for each breaker. Oil flow to the breaker within this range is adequate for operation. However, for maximum productivity the carrier should be capable of providing the maximum required flow. Compare the maximum oil flow requirement of the breaker with the oil flow capacity of the carrier. Remember the breaker operates at 1500-2500-psi. therefore, oil flow should be evaluated at operating pressure.