Tech Tips

Outdoor Unit Will Not Run
Contactor Will Not Pull "In"

  • No Line Voltage
    • Missing Phase Leg
    • Blown Fuse
    • Tripped Breaker
  • No Low Voltage (24 volt) between "Yellow" and "Brown" Wires at Unit
  • No Low Voltage at Contactor Coil
    • Open Pressure Switch
    • Bad Time Delay
    • Bad Control Relay
    • Compressor Motor Protector Contacts Open
  • Bad Contactor