00074
Carrier Transicold
Critical

AC Phase Reversed

External AC power phase is reversed, which can damage motors.

Possible causes

  • Incorrect wiring in wall socket
  • Repaired extension cord with crossed phases
  • Utility grid instability
  • Phase sequence sensor failure

Recommended actions

  • Disconnect power supply immediately
  • Use a phase tester on the grid socket
  • Correct connector wiring if repaired
  • Select Diesel operation while repairing

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