A system and method includes a compressor operable in a refrigeration circuit and including a motor, a current sensor detecting current supplied to the motor, a discharge line temperature sensor detecting discharge line temperature of the compressor, and processing circuitry receiving current data from...http://www.google.com.hk/patents/US7878006?utm_source=gb-gplus-share專利 US7878006 - Compressor diagnostic and protection system and method
