LG WT5101HW Service Manual page 44

12) Power is automatically turned off during operation or immediately turning on
the power button.
When, what, and how to check
Auto Power Relay or Controller
1. It would be defect of the controller if
power is automatically tumed off
immediately when turning on the power
switch even though there is no defects
in the power switch.
13) Sensor
(1) Sensor failure
Problems
Installation of a non-calibrated main
board.
Short
The sensor is contaminated with a film
of detergent, laundry additives, hard
water scale, etc.
Sensor is out of order
Stop or reset the sensor by entering and exiting the TEST MODE.
Result of Check
Automatically tumed
off
Result of Check
If the value is not within 1~26 by
checking the controller group.
Check the value of the sensor
electrode by using TEST MODE
during the operation of a normal
operation *washing, rinsing, spinning,
etc.) If the value shows no change, the
sensor is defective.
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.
tE - Temperature Sensor Fault
Verify the operation of the temperature
sensor in the QC test mode.
44
Possible Cause
Possible Cause
Recalibrate or replace the controller.
One of these should repair this.
Clean the electrode of the sensor.
Reset the sensor by entering and exiting
the test mode.
Check the wiring harness and connectors
to the sensor.
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.
Check the wiring harness.
Replace the sensor.
Replace the main board.
How to repair & settle
Change the controller.