LG WD(M)-8070F(H)(B) Service Manual page 26

WD(M)-8070F(H)B, WD(M)-1070(5)F(H)B, WD(M)-1170(5)F(H)B, WD(M)-1270(5)F(H)B, WD(M)-1370(5)F(H)B
WD(M)-8074F(H)B, WD(M)-1074(6)F(H)B, WD(M)-1174(6)F(H)B, WD(M)-1274(6)F(H)B, WD(M)-1374(6)F(H)B
WD-8078FHB, WD-1078FHB, WM-1171(6)FHB, WM-1371(6)FHB, WD-1271FB
PWB ASSEMBLY (MAIN)
220 - 240V~
RED
YELLOW
WD-8070F(H), WD-1070(5)F(H)
220-240V
WASH HEATER TROUBLE
When checking the voltage between
connector the PWB assembly (Main)
during whites washing ,Is the voltage
~
220 - 240V ?
YES
After power off,is the resistance of wire
(RED-YELLOW) connectors between
10 to 30 ?
NO
After power off and the heater terminal is
disconnected, is the resistance 10 to 30 ?
When checking the voltage between two
receptacles of the PWB assembly (Power) during
washing.
Is the voltage 220-240V?
YES
After power off, is the resistance between yellow
wire and red wire of connector 10 to 30 ?
After power off, is the resistance of heater
10 to 30 ?
3 4
1 2
NO
26
Replace the PWB
NO
assembly (Main).
YES
Normal.
Replace the heater
NO
assembly.
NO Replace the PWB
assembly (Power).
Normal.
YES
Replace the heater
NO
assembly.