00029
Carrier Transicold
Critical

Check Heat Cycle

Hot gas heating cycle failure.

Possible causes

  • Inoperative hot gas valve
  • Open vapor solenoid valve
  • Lack of differential pressure
  • Solenoid coil electrical failure

Recommended actions

  • Test solenoids manually
  • Verify piping temperature
  • Check heat signal wires
  • Validate discharge transducer

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