Battery dead, then no AC

[Rickness]

Drove 993 two weeks ago, everything works. sat because Covid and needed recharge battery. once charged, car starts , everything back to normal except AC compressor not kicking on. Condenser fan operating, fuses in engine compartment and front trunk good. checked AC relay and Fog light relay. fans and flaps work. no 12 volts at AC compressor

[Dick Shift]

check a/c system low pressure switch? If a/c system pressure is low on Freon it will shut off voltage to compressor.