Performed AC maintenance. Washed condenser coils with coil cleaner and water. Checked compressor and fan motor amperage, everything looked great. The contactor had 240 volts going across the terminals. There was a zoning pressure switch error code on the S30 thermostat. We fixed the issue by installing a jumper on the zone board. That issue is now fixed. The refrigerant levels looked good and the AC is in excellent condition.