LG WT4801CW Service Manual page 37

(2) Sensor inaccuracy
Problems
① Contamination on the sensor causes
inaccurate readings.
② Inaccurate sensor readings.
**
- To set the sensor to detect a higher detergent level, increase the sensor group by 1 or 2 steps.
- To set the sensor to detect a lower detergent level, decrease the sensor group by 1 or 2 steps. (See below.)
(3) Changing the controller group
Press and hold CUSTOM PROGRAM and DELAY WASH, then press the POWER button.
▶ ▶ Initial Test mode display: All LEDs are off, except I-SENSOR LED
Display the number of TR calibration times: Display
1. Press PROGRAM once. It will display the current controller group. (1 ~ 26)
Press PROGRAM again to decrease the controller group by 1.
2. Press START / PAUSE once. It will display the current controller group. (1 ~ 26)
Press START / PAUSE again to increase the controller group by 1.
※ The buzzer sounds if there is no controller group.
Result of Check
·The difference between the sensing
value measured from the supplied
water by a jig and the sensor value of
the product is 5 or more..
·If the value measured from the jig is
normal but the consumer is not
satisfied with
0 means not calibrated, 1 for the first time and so on.
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How to repair
One of these should repair this.
Clean the electrode of the sensor.
Reset the sensor by entering and exiting
the test mode. Replace the sensor.
Reset the sensor by entering and exiting
the test mode.