LG DLEX3370 series, Service Manual

Page: 43 / 64

Test 6
oŒˆ›Œ™Gzž›ŠG{Œš›GTGl“ŒŠ›™ŠG{ —Œ
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YL3 BK
YL3 WH
jˆœ›–•
{™–œ‰“Œ
z ”—›–”G
tŒˆšœ™Œ”Œ•›
j–•‹›–•G
Before measuring resistance, be sure to turn the power off, and do voltage discharge.
(When discharging, contact the metal plug of the power cord with a ground line.)
While operating, Heating will not work. Drying time takes longer.
After turning the power off, measure the resistance.
Enter diagnostic mode and press the
START/PAUSE button twice. Measure the
voltage between YL3- (WH) and the YL wire
on the black tab relay. Is the voltage 240 VAC?
Disconnect the YL3, black tab relay and white tab relay
connectors at the main PCB.
Measure the resistance between YL3- (WH) and the
BL wire on the black tab relay connector.
Is the resistance 18-22 ?
Measure the resistance between YL3-
(WH) and the YL wire on the white tab relay
connector. Is the resistance 18-22 ?
?
Measure the resistance between the BL wire on the
black tab relay and the YL wire on the white tab
relay connectors. Is the resistance 36-44
Measure the resistance between terminals 1
(RD) and the heater housing.
Is the resistance <1 ?
Refer to the hi-limit thermostat and
thermal cut off component tests.
• Check power supply.
• Check wiring and
connectors to
the element.
• See element
component test.
• Check wiring and
connectors
to the element.
• See element
component test.
• Check wiring
and connectors to the
element.
• See element
component test.
• Replace the
element.
TH3
L2(Red) L2S(White)
TH2
L2S(White)
L2
(Red)
TH3
TH2
L2D(White)
Only for FLOW SENSE model Others
Wires
L2(Red)
L2D(White) : Go to the duct(YL3 in main pcb)
L2S(White) : Go to the safety.
BK WH
43