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90 Part Number: 000015431 Rev 02 6/20
E01 LONG FREEZE CYCLE
If the freeze time reaches 35 minutes, the control board
automatically initiates a harvest cycle. If 3 consecutive
35-minute freeze cycles occur, the ice machine stops.
E02 LONG HARVEST CYCLE
If the harvest time reaches 7 minutes, the control board
will start a thaw cycle and automatically return the ice
machine to the freeze cycle. After 3 consecutive long
harvest cycles the ice machine stops.
ANALYZING WHY A SERVICE FAULT (E01 & E02)
STOPPED THE ICE MACHINE
Some service Faults are designed to stop the ice machine
prior to major component failures, most often a minor
problem or something external to the ice machine. This
may be difficult to diagnose, as many external problems
occur intermittently.
Example: An ice machine stops intermittently on E01 Long
Freeze (long freeze time). The problem could be a low
ambient temperature at night, a water pressure drop, the
water is turned off one night a week, etc.
Refrigeration and electrical component failures will cause
a Service Fault. Eliminate all electrical components and
external causes first. If it appears that the refrigeration
system is causing the problem, use Manitowoc’s
procedures, charts, checklists, and other references to
determine the cause.
The following checklists are designed to assist the service
technician in analysis. However, because there are many
possible external problems, do not limit your diagnosis to
only the items listed.
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