Pulled unit away from wall and unplugged it from the outlet. Then I removed the access cover and plugged unit back into outlet. Could here clicking noise coming from circuit board. I unplugged unit and removed circuit board cover assembly. Plugged the unit back in and found a relay that was failed. I ordered the replacement circuit board and a replacement ice maker as I was having issues with it not operating before the power failure. When the new parts arrived I took pictures with my cell phone so I could see where the wires installed on the new board. I unhooked the harnesses one at time and plugged them into the new board. I then plugged the unit back in and it powered up and stared working correctly. I then unplugged it again and removed the old ice maker and installed the new one. I turned the water supply valve on and plugged the unit back in. Everything worked like new so I replaced the access cover and pushed back against wall. It has only been a few days since repair but no issues yet.