LG DLEX3900 Series Service Manual page 38

1. Power Connection
< Table1 > : Connection of the Tap Relay with Heater (Electric)
Tab Relay 1
High
on
Mid High
Medium
Low
on
Extra Low
< Table 2 > : Connection of the Tab Relay with Burner (Gas)
Tab Relay 1
High
Mid High O
Medium
Low
O
Extra Low
2. Status Mode Of The Connection
< Table1 > : Connection of Tap Relay with the PCB ASSEMBLY (Electric)
Connector Housing
When measuring power, be sure to wear insulated gloves to avoid an electric shock.
Check the t ab relays connection properly.
With dryer power on; connector linked to controller.
Tab Relay 2 Heater 1
Heater 2
on
on
on
on
off
off
Burner
Temperature control below 70
O
Turn on burner
Temperature control below 47 4
O
Turn on burner
Color
Harness
Yellow wire
Black
Black wire
Connector Housing
Blue wire
White
Black wire
Connector Housing
Remark
Temperature control below 68
Turn on heater 1 and heater 2.
Temperature control below 52
Turn on only heater 1.
Remark
4
Connection
PCB
1
2
Tap Relay 1
1
2
Tap Relay 2
37
38
4
4
Remark
Check the matching color between
harness wire and tap relay.
(Black housing – black tap relay)
Check the matching color between
harness wire and tap relay.
(White housing – white tap relay)