00081
Carrier Transicold
Info

Check FHR Circuit

Failure in the Fuel Heater Relay (FHR) or heater circuit.

Possible causes

  • Defective FHR relay
  • Burned out diesel heater element
  • Open FHR circuit fuse
  • Loose wiring at fuel filter

Recommended actions

  • Check relay operation in test mode
  • Measure heater element resistance
  • Check power fuse
  • Clean electrical contacts on filter housing

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