Refrigeration system, failure diagnostic system thereof, failure diagnostic method, controller and storage medium

A fault diagnosis system for a refrigeration system, comprising:

• a receiving module configured to receive a fault alarm sent by an associated refrigeration system;
• a storage module configured to store fault cause lists, associations of the fault cause lists and fault alarms, repair means lists and associations of the repair means lists and fault causes;
• and
• a processing module configured to:
• acquire a fault cause list associated with the fault alarm;
• determine whether to run the fault diagnosis system associated with the fault alarm;
• and
• when the fault diagnosis system associated with the fault alarm is run, check the associated refrigeration system sequentially according to the fault cause list and acquire a fault cause and a repair means list associated with the fault cause;
• or when the fault diagnosis system associated with the fault alarm is not run, directly output the fault cause list associated with the fault alarm.