LG DLE4970 E Series Service Manual page 21

Caution
Trouble Symptom
Measurement Condition
1. Power Connection
: Connection of the Tab Relay with Heater (Electric)
Tab Relay 1
High
on
Mid High
Medium
Low
on
Extra Low
: Connection of the Tab Relay with Burner (Gas)
Tab Relay 1
High
Mid High O
Medium
Low
O
Extra Low
Tab Relay 2
Tab Relay 1
Tab Relay 1
2. Status Mode Of The Connection
: Connection of Tab Relay with the PCB ASSEMBLY (Electric)
Connector Housing
When measuring power, be sure to wear insulated gloves, to and avoid an electric shock.
Check the Tab 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
O
Turn on Burner
Trans
Tab Relay 2
Color
Harness
Yellow wire
Black
Black wire
Connector Housing
Blue wire
White
Black wire
Connector Housing
Remark
Temperature Control below 68
Turn on Heater1 and Heater2.
Temperature Control below 52
Only Turn on Heater1.
Remark
4
4
PCB ASSEMBLY LAYOUT
Connection
PCB
1
2
Tap relay 1
1
2
Tap relay 2
21
21
4
4
Remark
Check the Matching color Between
Harness wire and Tab Relay.
(Black Housing – Black Tab Relay)
Check the Matching color Between
Harness wire and Tab Relay.
(White Housing – White Tab Relay)