Jenn-Air JDB9600AW, Technical Education

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BBDUDBHQBE±3DJHRI
3.19 Aqua sensor (optional)
A infrared diode and a phototransistor are located opposite each other
in a U-shaped translucent housing on a board.
The infrared diode transmits infrared light through the detergent
solution flowing between the U-shaped housing. Depending on the
turbidity, the light-sensitive base of the phototransistor becomes
conductive.
The measurement is analysed in turbidity ranges. The values are
saved in the electronics. The Aqua sensor is active in the prerinse, the
wash and at the end of the wash. The result of the Aqua sensor
analysis influences the sequence of the rinse programmes.
A wide range of programme structures is possible in the automatic
programme.
In each programme sequence in which the Aqua sensor is active the
Aqua sensor is calbrated.
If calibration is defective, an error is written into the error memory of
the power electronics. The measured value is set to “turbid” and
a maximum programme sequence occurs
No Aqua sensor installed
►
There are appliances which are supplied without
Aqua sensors. Nevertheless, the electronics check
the Aqua sensor and save an error message.
1 Seal 3 PCB with light barrier
2 Housing