Well I'm less pleased with LG customer service now
The repair tech called to set up an appointment and he said,"Oh by the way, LG said it's not under warranty after all unless it's the sealed system (compressor,etc)". I told him to stay home since an in-home service would likely cost half as much as a new window.
Soooo.....I'm going to order the replacement probe and see what happens. If that doesn't do the trick, I may pony up the dough for a new control board. That leads me to my next question:
There are 2 control boards. The DC one contains the display AND it's where the thermistor plugs into. BUT the AC board is the real "brains of the operation. Which would you replace based on the problem I'm having?