Patent ID: 11859841
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  G | IPC F  G

Claim 6:
7. A program update method for updating a program of equipment involved in air-conditioning, the equipment including one or more pieces of equipment, the program update method comprising:
obtaining, from an update management device that previously stores an update program for updating the program of the equipment, the update program;
obtaining a pre-update program from the equipment;
transmitting the obtained update program to the equipment and updating the program of the equipment; and
obtaining, from the equipment in which the program is updated, program update data including parameters affecting success or failure of the update when the program is updated and an update result, a correlation relationship of the parameters;
analyzing a correlation relationship of the parameters;
when one of the one or more pieces of the equipment in which the program is updated does not operate normally and the correlation relationship exists in the parameters related to the one of the one or more pieces of the equipment that does not operate normally, re-updating the program of the one of the one or more pieces of the equipment that does not operate normally; and
transmitting, when one of the one or more pieces of the equipment does not operate normally after the re-update of the program, the pre-update program to the one of the one or more pieces of the equipment and restoring the program of the one of the one or more pieces of the equipment to the pre-update program.