Outdoor unit of first floor system not running Discovered rodents nesting in the electrical compartment of the outdoor unit. Damaged control voltage wiring is the cause of the no operation outside Visual inspection of indoor evaporator A coil and air filter during pre-inspection Clean and disinfect the electrical compartment Repair damaged wiring Water flush condenser coils on both air conditioners Add rodent poison provided by homeowners to the electrical compartment of both outdoor air conditioners Cooling run test from first floor nest thermostat