Diagnostic method and apparatus for a domestic appliance

Details Diagnostic method and apparatus for a domestic appliance Diagnostic method and apparatus for a domestic appliance

1993-04-05

1995-01-03

Paschall, Mark H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219483, 219414, 219501, 219508, 34087017, 340539, H05B 102

Patent

active

053788745

ABSTRACT:
The present invention is a cooking appliance or an electronic control for a cooking appliance and method of controlling the same. A remote control unit having a built-in temperature sensor, positional switch and low-battery detection circuit is in two-way intermittent wireless communication with the appliance control unit of the present invention. The appliance control unit includes a switch means for controlling the heating elements of the cooking appliance wherein the switch means for each heating element includes two power switches connected in series and coupled with a redundancy detection circuit for the detection of a failure of one of the two power switches. Two-way communication between the two control units of the present invention is constantly monitored to ensure proper operation of the cooking appliance and to provide a mechanism to report errors to the user or to shut down the cooking appliance, as appropriate, soon after an error is detected. Mechanisms are also provided whereby the wireless communication means of the control units may be diagnosed to ensure the control units are properly communicating with each other.

REFERENCES:
patent: 4131786 (1978-12-01), Cooper
patent: 4340796 (1982-07-01), Yanaguchi et al.
patent: 4475024 (1984-10-01), Tateda
patent: 4634842 (1987-01-01), Payne
patent: 4812842 (1989-03-01), Bayerlein et al.
patent: 4857918 (1989-08-01), Nukushina et al.
patent: 5029662 (1991-07-01), Pena
patent: 5112630 (1992-05-01), Scott

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