Compressor protection and diagnostic system

Abstract

A compressor diagnostic device is provided and includes at least one of a temperature sensor and a current sensor. The current sensor measures a first current flow through a motor of a refrigerant compressor. The temperature sensor is disposed within and sensing a temperature of a measurement region of an electrical conductor that is configured to close and open to allow and prevent current flow to the motor, respectively. The compressor diagnostic device also includes a controller in communication with the at least one of the current sensor and the temperature sensor. The controller is operable to control the electrical conductor based on a comparison of a second current flow through the motor and a maximum current.

Dependencies are inferred from the claim text.