154
Thermo King
Critical
Low Suction Pressure Switch Failure
Inconsistent state or failure detected in the low suction pressure switch.
Possible causes
- Extremely low refrigerant pressure
- Defective or open low-pressure switch
- Severe refrigerant gas leak
Recommended actions
- Connect gauges and verify actual pressures
- Check continuity of the LP switch
- Check refrigerant charge and look for leaks
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