Low Suction Pressure (DSR)

Suction pressure dropped below the minimum allowed value.

Possible causes

Low refrigerant charge
Restricted filter drier or TXV
Evaporator airflow blocked
Failed evaporator fan

Recommended actions

Leak-check and recharge refrigerant
Replace filter drier
Clear evaporator airflow obstructions
Test evaporator fan operation

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Other Thermo King codes

00No Alarms Exist 02Check Evaporator Coil Sensor (Zone)03Check (Control) Return Air Sensor (Zone)04Check (Control) Discharge Air Sensor (Zone)05Check Ambient Temp Sensor 06Check Coolant Temp Sensor

View all Thermo King codes

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