Tech arrived and found power off to American Standard outdoor unit. Blower was running and thermostat was calling for cooling. No 4 flash hard lockout was present on arrival. Refrigeration condenser on the left side of building was frozen. Manager on duty will call refrigeration company that installed walk in freezer to look at frozen refrigeration condenser. Tech restored power to American Standard outdoor unit and monitored cooling pressures for ten minutes. Outdoor temp is 67 degrees. Indoor temp by thermostat is 68 degrees. Tech found sub cooling high. Tech switched to heating mode and found contactor pulled in all the time without a call. Tech replaced 2 pole 40 amp contactor for testing purposes and started outdoor unit in heat mode. Tech found system short cycling every few seconds on the high pressure switch. Tech confirmed normal blower operation. Found return side of indoor coil dirty. Tech cleaned it with power washer. After cleaning, outdoor unit is still short cycling in