Water System
•
Dirty/defective water level probe
•
Low water pressure (20 psig min.)
•
High water pressure (80 psig max.)
•
High water temperature (90°F/32.2°C max.)
•
Clogged water distribution tube
•
Dirty/defective water fill valve
•
Dirty/defective water dump valve
•
Defective water pump
•
Loss of water from sump area
Electrical System
•
Low incoming voltage
•
Ice thickness probe out of adjustment
•
Harvest cycle not initiated electrically
•
Contactor not energizing
•
Compressor electrically non-operational
•
Defective fan cycling control
•
Defective fan motor
Miscellaneous
•
Non-Manitowoc components
•
Improper refrigerant charge
•
Defective head pressure control
•
Defective harvest valve
•
Defective compressor
•
TXV starving or flooding (check bulb mounting)
•
Non-condensible in refrigeration system
•
Plugged or restricted high side refrigerant lines or
component
•
Restricted air flow/dirty condenser fins
•
High inlet air temperature
•
Condenser discharge air recirculation
Part Number STH025 11/16
117