Panasonic NN-A860WB, Service Manual

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Grill,Convection and microwave duty cycles
7.6. One touch Auto sensor cooking NN-A890WB
Auto sensor cook is a revolutionary way to cook by microwave without setting a power level or
selecting a time. All that is necessary is to select an auto sensor program before starting to
cook. /
Understanding Auto sensor cooking / / As food cooks, a certain amount of steam is produced.
If the food is covered, this steam builds up and eventually escapes from the container. In auto
sensor cooking, a carefully designed instrument, called the humidity sensor element, senses
the escape of steam. then, based upon the auto sensor program selected, the unit will
automatically determine the correct power level and the proper length of time it will take to cook
the food.
NOTE: Auto sensor cooking is successful with the foods and recipes found in the auto sensor
cooking guide. Because of the vast differences in food composition, items not mentioned in the
cooking guide should be prepared in the microwave oven using the power select and time
features. Please consult variable power microwave cook book for procedures.
/ Explanation of the auto sensor cooking process /
1. The shaded columns in figure 1 indicate when the humidity
sensor heater is on.
2. During the 30 second period there is no microwave activity. When
calculating the T2 time by using the formula below, make sure this
30 seconds is subtracted from the T0 time.
3. T1 time T0 time - 30 seconds
4. T2 time when the steam escapes from the cooking container
placed in the oven, the humidity sensor detects it and the
microprocessor calculates the balance of cooking time. This T2
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