Importance

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Abstract

A microprocessor based self-cleaning oven temperature control system and method includes a plurality of preprogrammed look-up temperature tables stored in a read only memory (ROM) portion of the memory of the microprocessor. One of the tables is selected for use as a reference table; and the values therefrom are transferred to a random access memory (RAM) portion of the memory of the microprocessor. Upon each application of power to the oven, the microprocessor, during an initiation subroutine, determines from a digital input signal the type of oven that is present. The oven type input signal to the microprocessor may designate a nominal or factory calibrated oven or an oven that has been recalibrated during a field service call to operate at bake temperatures offset from nominal bake temperatures. After determining the particular oven type, values from the appropriate temperature look up table in ROM are immediately transferred to RAM for use as a reference temperature table in connection with each subsequent execution of the oven temperature control algorithm.

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First Claim