I had trouble with my Whirlpool ice maker that was on top. It wasn’t making any ice. It has an infrared sensor for the door. The light on the sensor was blinking. It would blink twice and pause. According to the code, it sounded like I would need a new circuit board for the sensor, which is about 250.00. I went and shut the breaker off to the refrigerator, because I didn’t want to pull it out, and waited about 5 minutes. I turned the breaker back on and the ice maker started working again.