Electrolux EI30BM55HB - 30" Microwave Oven, Technical & Service Manual

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Troubleshooting
3-14
Procedure
Letter
P
Component Test
HUMIDITY SENSOR TEST
Checking the initial sensor cooking condition
WARNING: The oven should be fully assembled before following procedure.
1) The oven should be plugged in at least two minutes before sensor cooking.
2) Room temperature should not exceed 35°C.
3) The unit should not be installed in any area where heat and steam are generated. The unit
should not be installed, for example, next to a conventional surface unit. Refer to the
“INSTALLATION Instructions”.
4) Exhaust vents are provided on the back of the unit for proper cooling and air flow in the cavi-
ty. To permit adequate ventilation, be sure to install so as not to block these vents. There
should be some 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 settings.
The sensor will detect vapor given of by the spray and turn off before food is properly
cooked.
8) After the oven is started on sensor cooking condition, if the sensor has not detected the
vapor of the food, ERROR will appear and the oven will shut off.
Water load cooking test
WARNING: The oven should be fully assembled before following procedure.
Make sure the oven has been plugged in at least two minutes before checking sensor cook
operation. The cabinet should be installed and screws tightened.
1) Fill approximately 200 milliliters 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 the SET/CLOCK pad once, the POWER LEVEL pad twice and the START pad once.
And touch the number pads 1 once and the number pad 2 once. Now, the oven is in the sen-
sor cooking condition, and “AH10” and “COOK” will appear in the display.
5) The oven will operate for the first 32 seconds, without generating microwave energy.
NOTE: ERROR will appear if the door is opened or STOP/CLEAR pad is touched during first
stage of sensor cooking.
6) After approximately 32 seconds, microwave energy is produced.
If ERROR is displayed or the oven does not turn off, replace the humidity sensor or check
the control unit, refer to explanation below.
1. TESTING METHOD FOR HUMIDITY SENSOR AND/OR CONTROL UNIT
To determine if the sensor is defective, the simplest method is to replace it with a new
replacement sensor.
1) Disconnect the power supply cord, and then remove outer case.
2) Open the door and block it open.
3) Discharge high voltage capacitor.
4) Remove the humidity sensor.
5) Install the new humidity sensor.
6) Reconnect all leads removed from components during testing.
7) Re-install the outer case (cabinet).
8) Reconnect the power supply cord after the outer case is installed.