Arrived onsite for lack of cooling. Turned the ac on. Compressor turned off as about to measure pressures. Performed diagnostic. Confirmed capacitor is good. Confirmed compressor is ohm ok. Restarted system checked amps. Observed after a few minutes high head pressure. 50 sub cooling. Removed refrigerant. System may have restriction. Measured 20 degrees temperature drop. Brought sub cooling to 18 degrees. Measured good suction and liquid line temperatures. Measures good r22!pressures. System is cooling.
