Fault determination test method for systems including an electro

Details Fault determination test method for systems including an electro Fault determination test method for systems including an electro

1990-04-20

1991-04-23

Wayner, William E.

Refrigeration

With indicator or tester

Diverse function indicators or testers

73168, 137554, 318490, 324158MG, G01M 1900

Patent

active

050090755

ABSTRACT:
In a system for refrigeration and air conditioning including a microprocessor based electronic controller and an electronic expansion valve responsive to the controller, a fault determination test method for discovering operational faults in the controller and the valve. The test method further determines whether the failure is due to the valve or the controller to minimize servicing time by providing test results applicable to a logic table which indicates the failed component and the action to be taken by the service technician.

REFERENCES:
patent: 4420040 (1983-12-01), Raider et al.
patent: 4528493 (1985-07-01), Spencer et al.
patent: 4694390 (1987-09-01), Lee
patent: 4730164 (1988-03-01), Daido et al.

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