Read LG WM0742HGA Service Manual online
26
WASH HEATER TROUBLE
When checking the voltage between
connector during whites washing.
is the voltage 120V AC?
After power off, is the resistance of wire (BN-
BL) connectores between 10Ω ~ 30Ω?
BL) connectores between 10Ω ~ 30Ω?
After power off and the heater terminal
is disconnected, is the resistance
10Ω ~ 30Ω?
is disconnected, is the resistance
10Ω ~ 30Ω?
Replace the MAIN
PWB ASSEMBLY.
Normal
Replace the
Heater Aseembly.
YES
NO
NO
YES
NO
HEATING CONTINUOUSLY ABOVE
THE SETTING WATER TEMPERATURE
When pressing WASH/RINSE,
is the displayed temperature over 10
higher then the selected temperature?
is the displayed temperature over 10
higher then the selected temperature?
Hot
: 50
Warm : 40
Cold
Cold
: 30
Is the resistance between and
of Connector (1) 2.5-180kΩ?
When checking the THERMISTOR on the tub,
is the THERMISTOR loose?
Check if inlet hose is
connected to a hot
faucet; otherwise,
replace MIAN PWB
ASSEMBLY.
Check electrical
connection.
Replace THERMISTOR
Push the THERMISTOR
tighthy to the rubber.
YES
YES
NO
NO
YES
2
3
4
5
6
1
2
3
Click on the first or last page to see other WM0742HGA service manuals if exist.