That model looks to be a water cooled unit. Check your condenser water circuit. Not the water that the machine is making ice with, but the water it’s running through the condenser coil. If your building has a chilled water system, you can unhook the condenser water OUTLET at the machine, and run a hose from the machine outlet down a drain to test it. If it makes ice then, you know there’s an issue w your chilled water circuit, and it’s not an ice machine issue. Make sure to shut off the water before removing any lines from the unit. And the supply side would have to be turned back on to test it, once you run a hose down the drain.