Thought it was the inlet water valve so I ordered a new one. This site suggested a new bin thermistor as well, which I knew had been acting up as the ice bin would fill to the top if left on its own. I ordered a new thermistor as well. New water valve did not fix it. However, inside the machine I found the technician service guide. It said the flashing power light was a sign that the thermistor was bad. Replaced the thermistor and it started working. Kept the old water valve for a spare. Thanks to this site for suggesting that I might need a thermistor.