Part Number 000015433_03 5/20 41
Diagnostic troubleshooting for the ice machine involves
following flowcharts that are dependent on symptoms of
the failed machine.
Follow the flowcharts for the failure symptom and model
you are working on.
NOTE: Refer to the sequence of operation to determine
where in the sequence the ice machine has failed. An
example would be an ice machine that energizes the gear
motor, but the compressor does not energize. Following
the electrical flowchart will quickly and easily eliminate
non issues.
UFF0200/UFF0350/UNF0200/UNF0300
Troubleshooting
SELF-CONTAINED AIR-COOLED
Normal Operation
When the toggle switch is placed in the “ON” position the
following controls must be in the closed position before
the ice machine will start:
A. Bin Thermostat
B. Low Evaporator Temperature Thermostat
C. Low Water Level Switch
NOTE: Placing the toggle switch in the ON position starts
the gear motor and refrigeration system. The float valve
controls the water inlet valve and water level. The freeze
cycle ends when ice contacts the bin thermostat. The ice
machine will restart when ice no longer contacts the bin
thermostat.
Troubleshooting
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