Methods and apparatus for monitoring and controlling the operation of a refrigeration unit in a manner which eliminates the need for circuit breakers and fuses in control circuits which are instrumental in selecting and changing the operational mode of the refrigeration unit. When a need to change to...http://www.google.de/patents/US5303560?utm_source=gb-gplus-sharePatent US5303560 - Method and apparatus for monitoring and controlling the operation of a refrigeration unit
