Arrived on site and checked in with MOD. Customer complained Ice Machine unit evaporator coil frozen over and not making ice. found machine had been turned off. turned unit on and ran. unit made and dropped several batches of ice. spoke to Manitowoc tech support. tech support states, either the harvest flap had accidentally gotten pulled and threw off ice cycle causing coil to freeze. or unit lost water pressure due to water filters becoming temporarily clogged. will order new water filters and return to replace. if problem persists further diagnostic will be required at that time. 10/22/20 Arrived on site and checked in with MOD. customer states unit has worked properly since last visit. customer would like us to order water filters and return to perform pm. 10/23/20 Arrived on site and checked in with MOD. replaced all water filters and performed PM. ran and tested. unit working properly at this time.