Turbidity Sensor - EdgeStar BIDW1802 Service Manual

Note: If the thermistor is not operating, the hot wash cycle will set a default time for the
heating element to cycle.
To remove the thermistor:
1. Disconnect the power.
2. Lay the dishwasher on its back.
3. Remove the 1 screw that attaches the base cover to the base, then use a flat-
head screw driver to release the snap joints.
4. Remove the wiring harness connected to the float switch on the base cover.
5. Disconnect the thermistor wire harness.
6. Remove the 2 screws and the thermistor from the sump.
Note: Ensure that the O-ring is retained in the thermistor before reassembly.

Turbidity Sensor

The turbidity sensor is located under the tub and is attached to the back side of the
sump with two snap joints. During the pre-wash of wash cycle, the turbidity sensor
senses the water, judges the AD interval and chooses the appropriate wash cycle.
Note: If the turbidity sensor is not operating, wash dishwasher will choose a default
wash cycle and inlet default wash water.
To remove the turbidity sensor:
1. Disconnect the power.
2. Lay the dishwasher on its back.
3. Remove the 1 screw that attaches the base cover to the base, then use a flat-
head screw driver to release the snap joints.
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