we have run into harvest issues many time Here. Finally Manitowoc admitted there was a problem. In the scenario where the ic maker is having trouble harvesting, but works perfect when you force harvest.
Then instead of multiple return visits, because they will call back….. YOu must replace all combo valves. (harvest valves with harvest pressure regulating valves) It will not work if you do not replace them all. We have spent many return visits on these issues. HEADS UP….Most of these valves are on back order so prepare for some very annoying wait times.