Panasonic NE-C1153 Service Manual page 14

NE-C1153 / NE-C1153C
6.3. Combination cooking control
Combination cooking is accomplished by operating the microwave and heater modes alternately during the same cooking cycle.
1. The digital programmer circuit generates the power relays control signals at a specific timing as shown in figure.
2. When the oven temperature reaches the predetermined temperature, the digital programmer circuit stops supplying power relay
control signals resulting in heaters to turn off. During this, digital programmer circuit continues supplying power relay 1, 3 control
signal so that microwave activity continues at predetermined duty ratio as shown in figure. The microwave activity continue to
cycle until entire cooking programme is completed.
3. When the oven temperature drops below the selected temperature, the digital programmer circuit generates power relay control
signals again at the predetermined timing.
NOTE:
After combination process, if oven temperature is higher than predetermined temperature, fan motor rotates for 5
minutes at maximum speed to cool the electric components of the oven.
14