Vapor Motor RPM High (CR)

Steam motor or electric compressor revolutions exceed the safety limit.

Possible causes

Variable frequency drive (VFD) or speed control failure
Defective electric motor RPM sensor
Voltage spike in the power grid

Recommended actions

Disconnect electric power and inspect motor
Verify speed controller parameters
Inspect bearing and speed sensor

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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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