Aqua Sensor; Drain Hose - Bosch SHE4AM12U Repair Instructions

4.10

Aqua sensor

The aqua sensor is located above the drain pump. It's a one-
piece assembly, not a small circuit board pulled out of a plastic
housing. It senses water cleanliness and allows the dishwasher
control to determine removing cycles to save energy.
If water is clean enough, it will be kept for the wash cycle. If not,
the aqua sensor directs the dishwasher to add an additional pre-
rinse or pre-wash cycle.
Dishwashers still operate adequately if aqua sensors fail.
Customers with lightly soiled or pre-rinsed dishes may notice
wash cycles lasting slightly longer.
702_58300000130262_ara_en_c
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1. Aqua sensor
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2. Sump
3. Drain pump port
4. Heat pump
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4.11

Drain hose

Ascenta dishwashers use a two-hose (internal / external) drain
hose system. A 92" long external drain hose is connected (during
installation) to the internal drain hose, with the 90º elbow pointing
toward the customer drain. The external drain hose connects
directly to the customer drain system without an adapter.
The 90º elbow in the hose should be pointed toward the
dishwasher drain connection.
The internal drain hose is held in place at the sump exit by a
white plastic hose lock (1).
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