Same issue, LG ***SKU:*** LFXS28968S.ASTCNA1, french doors with icemaker inside left door. The ice tray would fill with water but would not dump unless the reset button on the left underside of tray rotating mechanism was pressed. [br]
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1. I took apart the tray rotating mechanism (avoid!) which was a terror to put back together, no stripped gears and plenty of grease. Not the issue.[br]
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2. Installed LG ThinQ app and ran diagnostics - indicated no sensor issues or any faults. [br]
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>>>> 3. Unplugged and pulled the refrigerator from the wall. On the lowermost panel, unscrewed 5x Philips #2 screws to remove said panel Condenser was absolutely caked with dust after 2.2 yrs of operation. Vacuumed it out, and the panel vents, then reassembled and pushed back/powered up fridge.[br]
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Solved the issue. Amen to ***[link|https://www.ifixit.com/User/3914502/Trygve+Olsen|Trygve Olsen @trygveolsen|new_window=true]***