P00159
Carrier Transicold
Warning

Check Defrost Term 1 Sensor

Failure in defrost termination sensor number 1.

Possible causes

  • Defective defrost sensor
  • Excessive ice buildup
  • Loose connection at terminal board

Recommended actions

  • Check sensor resistance (NTC)
  • Verify sensor is properly secured to coil
  • Run manual defrost cycle to test response

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