They said it was making too much ice. They called in another tech last week. He said it needed a "sensor". Came back the next day to install a "sensor". They said little or no ice. He came back and made an adjustment. They were not satisfied, called me in. I found the machine not running at all. I would assume his sensor was a bin thermistor. The bin thermistor is not new. I could find no "new" parts on the machine at all. It connects to a condensate pump. It is OK. Power to the ON/OFF/CLEAN switch. Power out to the board on Ice and Clean. No functions what-so-ever from the machine to any component,water valve,pump,compressor,etc. I did not verify the evaporator thermistor. It will prevent the machine from starting. However, when the clean cycle would not work either, I was suspecting a bad board.