WT-R857 - LG Washing Machine Service Manual (repair manual). Page 52

(4) How to use Jig

• Loosening the front panel of the washing machine and

connect the sensor connecting terminal with the terminal of
the jig. 

After supplying water to the washing bath, agitate for one
minute before using the jig.
Record the sensed value of the sensor attached to the
current product at Test mode.
Connect the jig, put the jig sensor into the washing bath,
and record the sensed value of the sensor.
Determine the sensor performance by comparing the value
measured by the jig and the value measured by the sensor
attached to the product.

Sensor

Terminal

of Controller

(5) How to check sensing results

Initial operation : Press "RESERVATION"+"START/PAUSE" botton together after power on, and press
"RESERVATION" button only again (displaying the number of pressing button and each data every 0.5 second)

1 times : TR Controller Group (1 ~ 26 )
2 times : Check the temperature sensor codition

0 : Normal
99 :Temperature senosr’s error,
Stop sensing for Temperature and Hardness

3 times : Temperature of supplied water
4 times : Increment/decrement of washing time according to temperature
5 times : Washing stream at Motor off according to temperature
6 times : The number of comparing the conductivity of washing with rinsing conductvity

0 ~9 : Normal
99 : Abnormal (Stop the sensing of Hardness)

7 times : Sensored result (0 ~FF : hexadecimal is displayed)

.
.
.

18 times : Initial stage