LG may have good thermistors. I wasn't talking about LG directly. I just mean thermistors in general. Oven temp thermistors, GE fridge thermistors, Samsung fridge thermistors, Whirlpool Duet dryer thermistors, and thermistors in general are notorious for testing good a room temp.
Some manufacturers tell you to test the thermistors at operating temp, and Samsung has a special procedure where you dip the fridge thermistor into salty ice water to test it.
I used to test thermistors at room temp, but it was such an undependable way of testing a thermistor that I stopped wasting my time. They would test good, but the problem wouldn't go away until I replaced the thermistor. Go figure.!