Arrived at location on 9/8/21 - Found unit switched off at front display. This controller sometimes is sensitive to power outages and power fluctuations and will shut itself down. Started and cycled system two times checked temps inside cabinet and on controller all ok. Front display/controller is busted up will order new part. Returned to location on 10/6/21 - Replaced fault control. Set temp and ran defrost. Working normally at this time.