00027
Carrier Transicold
Critical

High Suction Pressure

Suction pressure higher than allowed limit for the engine.

Possible causes

  • Excessive heat load in trailer
  • Expansion valve stuck open
  • Incorrect TXV adjustment
  • Failed modulation valve (ISM)

Recommended actions

  • Verify ISM operation
  • Validate suction pressure sensor
  • Lower thermal load gradually
  • Check TXV bulb

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