Electric Standby Motor Thermal Protection (DSR)

Thermal protection of the electric standby motor has tripped due to overheating.

Possible causes

Motor overload or seized bearings
Insufficient ventilation
Low supply voltage
Ambient temperature too high

Recommended actions

Allow motor to cool
Check motor amperage and voltage
Inspect bearings and rotation
Verify ventilation around motor

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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

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