P00199
Carrier Transicold
Warning

C2 Chk Return Air Sensor

Compartment 2 return air sensor with reading failures.

Possible causes

  • Thermistor failure
  • Moisture in RAT2 connector
  • Zone configuration error

Recommended actions

  • Swap sensors to diagnose failure
  • Verify resistance according to air temperature
  • Insulate connections against moisture

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