High Pressure Shut Down

Question

I have a UAMB-042 JAZ unit. Sometimes the A/C will kick on and within several seconds the outside unit will stop and the inside unit will keep running. If you go outside and push the high pressure reset button the unit will start and continue to run. I have had it cleaned and checked for freon. They also changed the fan motor and drained the freon to see if the expansion o*****e may be clogged. The unit still has the same problem. The problem is intermitent and hasn't occurred with gauges attached to troubleshoot. Any ideas or help are appreciated.