Manitowoc RF0244 Technician's Handbook page 66

Yes
High Water
NO Sending Line Voltage To
Light Off?
YES
Gear Motor
Running?
NO
YES
Control Board
NO
Water Valve?
YES
Voltage @ Water
NO
Inlet Valve?
YES
Clean, Dry &
Reinsert Water Water Flows
Level Probes
Water Flow Stops
See Step
HI AMPS LIGHT OFF
Press Control Board Reset Button
Replace Control Board
Replace Water Inlet Valve
Replace Sensor – Control Board if Required
Press Control Board Reset Button To Clear Error