LG DLEX3900 Series Service Manual page 37

Test 1
BK or WH BL2
N (White)
L (Black) L (Red)
When measuring power, be sure to wear insulated gloves to
avoid an electric shock.
No power was applied to controller. Display (LCD or LED) off.
Dryer power on, collector plugged in.
Check the outlet, is the voltage
110 V ~ 125 V AC?
YES
Check if the voltage measured
between connector BK-
(Black Wire) linked to the controller
and BL2- (White Wire) Is 110~125 V?
1
YES
1
Check if the controller wire is
disconnected.
Check if terminal block and power
2
cord are connected (Check Plug ).
- Does power cord N (Naturall) line
match to terminal center
N (Natural) line?
YES
Replace controIler.
36
37
NO
2 2
or WH-
NO
NO
Check the
fuse or circuit
breaker
Check if
power cord is
properly
connected.
Reconnect
the controller.