LG DFSWLWT0A Instruction Manual page 7

ADVANCED SETTINGS
The LG Wireless Wall Thermostat Kit is designed to work seamlessly
with the LG Mini-Split Unit. In many installations multiple units will
be installed so to ensure proper installation and operation each
Wireless Wall Thermostat in every room must be merged with the
Mini-Split Unit the same room.
1 Press INIT Mini-Split on thermostat screen 5 seconds until
you see the message: PLEASE WAIT....
2 Immediately press the black button located on the Mini-Split
Control Card
ADVANCED SETTINGS
Final Phase
3 Within 1 minute a message will appear on the screen acknowledging
the communication links:
LINK SUCCEEDED
Touch TEST Mini-Split
The fan will immediately come on
4 You have now merged the thermostat with the Mini-Split Unit.
Momentarily touch the reset button on the bottom right
corner of the thermostat and when the message TOUCH FOR LG
THERMOSTAT appears, touch immediately. You have now
configured the thermostat and you can move to the room settings.
LINK FAILED
You need to repeat
the above steps