LG WM2801H Series Training Manual page 87

TRAINING MANUAL
Sensor Wiring Diagram
The Steam Generator is made up of 5 major components. They are the 1,100 watt
heater @ 120 V , the low water sensor, the high water sensor, the temperature sensing
AC
thermistor, and the water tank.
The water level sensors, the thermistor, along with the control board determine IF the
steam generator heater will be activated. To the left and above you will see the wiring
diagram for the water level sensors. The picture above shows 3 connectors. The rear
connector with black and white leads is the temperature sensing thermistor. The center
connector with a pink and white wire is the low water sensor. The front connector with a
single violet lead is the high water sensor.
From the wiring diagram you will see that the white wire (NA) is the GROUND reference.
The Pink wire is the low water sensor lead. The violet lead is the high water sensor lead.
Low Water Sensor Detecting Water
WM2801H*A
Steam Generator
The sensors operate in a 5 V
environment. When water is present and
conductivity exists from the white
GROUND lead and the pink low water
sense lead, less than 1.5 V
measured.
If the water tank were empty, the low water
reading from WHITE (WH) to PINK (PK)
would be greater than 3 V
(See High Water Sensor, next page.)
Page 87
WM2801H*A
DC
will be
DC
DC.
Washing Machine