Unit Forced to Low Speed

The unit has restricted operation to low speed to protect the engine or system.

Possible causes

Extremely high ambient temperature
Partial failure in high speed system
High pressure protection setting
Discharge temperature sensor reading high

Recommended actions

Check other active diagnostic codes
Check condenser cleanliness
Check refrigeration system pressures
Inspect throttle system

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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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