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Hello, IF... this system uses Refrigerant 22 it is way over charged, if it is using R-410a it may not be over charged, the inside of building temperature may be so high, at 100F outside air temp that the compressors are overloading (that can happen at 85 or 90F+ indoor temperatures)
Have you cleaned the condenser coil yet?
Let me know about all that, we can go from there.
Causes of the high head pressure can include:
Condenser fan blades replaced with wrong type or rotation.
Condenser coil has dirt deep between the fins where you can't see it
Air in the system (not using vacuum pump, and other causes)
If you did not evacuate the system before weighing the charge there would have been a pound or more of refrigerant left in the system dissolved in the oil.
You will most likely find that removing refrigerant until you meet the head pressures shown on the chart (for 100F outside air ONLY) the system will resume proper operation.
Look all that over, we can go from there as needed. Please hold your rating until we get the situation resolved