PROCEDURE LETTER
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TEST PROCEDURES (CONT’O)
COMPONENT TEST
AH SENSOR TEST
Checking the initial sensor cooking condition
(1)The oven should be plugged in at least five minutes befor sensor cooking.
(2)Room temperature should not exceed 35 “C.
(3)The unit should not be installed in any area where heart and steam are generated. The unit should not be installed, for example, next to a conventional surface unit. Refer to the “INSTALLATION Instruction”.
(4)Exhaust vents are providend on the back of the unit for proper cooling and air flow in the cavity.To permit adequate ventilation, be sure to install so as not to block these vents, There should besome space for air circulation.
(5)Be sure the exterior of the cooking container and the interior of the oven are dry. Wipe off any moisture with a dry cloth or paper towel.
(6)The Sensor works with food at normal storage temperature.For example, chicken pieces would be at refrigerator temperature and canned soup at room temperature.
(7)Avoid using aerosol sprays or cleaning solvents near the oven while using Sensor set- tings. The sensor will detect the vapor given of by the spray and turn off befor food is properly cooked.
(8)After 30 minutes if the sensor has not detected the vapor of the food, ERROR will appear and the oven will shut off.
Water load cooking test
Make sure the oven has been plugged in at least five minutes before checking sensor cook op- eration The cabinet should be installed and screws tightened.
(1)Fill approximately 200 milliliters (7.2 oz) of tap water in a 1000 milliliter measuring cup.
(2)Place the container on the center of tray in the oven cavity.
(3)Close the door.
(4)Touch SENSOR COOK pad and number pad I. Now, the oven is in the sensor cooking condition and
(5)Touch Start pad.The oven will operate for the first 16 seconds, without generating micro- wave energy.
When the AH sensor is defective (open or short), ERROR will appear in the display after 16 seconds cooling time.
If ERROR appears check sensor wire connections and/or AH sensor.
NOTE: ERROR will appear if the door is opend or STOP/CLEAR pad is touched during first stage of sensor cooking.
(6)After approximately 16 seconds, microwave energy is produced, oven should turn off when water is boiling (bubling).
If the oven does not turn off, replace the AH sensor or check the control unit, refer to expla- nation below:
TESTING METHOD FOR AH SENSOR AND/OR CONTROL UNIT
To determine if the sensor is defective, the simplest method is to replace it with a new re- placement sensor.
(1)Disconnect oven from power supply and remove outer case.
(2)Discharge the high voltage capacitor.
(3)Remove the AH sensor.
(4)Install the new AH sensor.
(5)
(6)Reconnect the oven to the power supply andcheck the sensor cook operation proceed as follows:
If new sensor dose not operate properly, the problem is with the control unit.
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