58 Phase Sensor Error (Check Alarm)

Thermo King Alarm Code
Description Corrective Action
Phase Sensor Error (Check Alarm)
  • Occurs during Pretrip (PTI) or Function test only.
  • During Phase Sensor Test, amperage difference between correct and wrong condenser fan rotation is more than 0.2 amps.
  • Indicates:
  • Defective phase relay
  • Defective relay board
  • Defective relay board cable No. 2
  • Start a Function Test. During step F1.05, check whether the phase relays on relay board receive a signal (LED energizes). Verify that the relays respond and shift to reverse phase.

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