How is the power of the building. It monitors the high voltage power to be correct and not have surges. Is anything else on the same circuit? Measure and monitor the line voltage as it does it.
Or the machine is experiencing a long freeze cycle. After a harvest, time the freeze cycle. Freeze cycle is limited to 60 minutes. Harvest is tripped by the water level sensor. If you have a leaking water valve, it will cause this. As will the Float sensor, Hot gas valve, the TXV, Low charge, and bad compressor. But those are rare to see.
Make sure to check that the float sensor is not hanging.