Door Lock Switch Assembly - LG WT1201C Series Service Manual

5-2. Door Lock Switch Assembly.

Wiring
diagram
The Door Lock Switch Assembly consists of a Solenoid, Plunger, Level, Key,
Sol-spring and Micro Switch. It locks the door during a wash cycle.
1. Door lock operation
- When a cycle is started, the PCB sends the door lock signal if Reed switch detects that the door
is closed.
- 16.5V is supplied to Solenoid.
- Magnetic force that is caused by solenoid operation inserts Plunger into Solenoid.
- The Level that connected with plunge is pushed out the key.
- The key must be in the proper position for the PCB to sense that the door is locked, otherwise the
dL error code will be displayed.
- If the latch does not extend far enough, the PCB will display the dL error code. This can happen,
for example, if the solenoid does not operate.
Function
Note: The door will attempt to lock 3 times. If it does not successfully lock, the solenoid will drive
2. Door unlock operation
- When the cycle ends, or if the cycle is paused, the PCB sends an unlock pulse to the solenoid.
-The key will attempt to unlock three times. If it fails to sense that the door is unlocked,
the solenoid will be driven to the lock position.
Circuit in the MAIN PCB / Wiring Diagram
the latch to the open position.
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