10 years of fridge repairs and I just learned I've been putting thermistors in backward
Was out on a Whirlpool side by side last Wednesday in Nashville, customer said freezer was too warm. I swapped the thermistor like I always do, checked temps, still reading weird. My helper who's been with me 3 months goes 'uh, isn't that sensor supposed to face the coil, not the wall?' I looked at my service manual and sure enough I've had them flipped for a decade. How many times do you think I misdiagnosed something because of a dumb orientation mistake?