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Bad thermistor
Took front cover off air conditioner and pulled it a little forward out of the outdoor housing. I then flipped the LED display section out to the left and exposed the patch panel. The next step was to remove the panel with a small screwdriver and disconnect the old thermistor plug. I then plugged in the new one, remove the old one from the grid bracket and placed the new one in. I then replaced everything else in reverse order. I have two LG air conditioners and they both have the same connection setup.
1 - Unbolted a/c unit from window cover - 2 - pulled internal unit forward to reveal display and controller area - 3 - used #1 phillips to remove screws to open cover - 4 - removed display assembly by disconnecting ribbon cable from main pcb - 5 - removed old pcb from display assembly 4 small phillips screws - 6 - reused ribbon cable and temp probe in new pcb and installed new pcb into display assembly - 7 - installed updated display assembly - 8 - closed controller assembly - 9 - restored a/c unit to window frame cover - 10 rebolted connections to window cover - 11 - started a/c unit!
Bad thermister, unit would run constantly without cycling.
Remove the front cover. Slide the unit forward a few inches from the case. Remove 1 screw from the top on the control box. Unsnap the old thermister leads going into the circuit board. Snap in the new thermister and place the end in the plastic holder in front of the coils. Install front cover.
