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ICE MACHINE WILL NOT HARVEST DIAGNOSTICS
Ice relaease issues fall into two main categories
mechanical or refrigeration. The first step in solving an
ice release issue is to determine which condition
exists. At the end of the harvest cycle place the toggle
switch in the OFF position, then remove and inspect
the sheet of ice.
If the cubes are well defined and show no signs of
melting a refrigeration problem is indicated.
If the cubes are deformed and melted away (sharks
teeth) a mechanical problem is indicated.
Something on the evaporator is causing the harvest
problem.
Always clean the evaporator before diagnosin the
refrigeration system.
The water curtain must swing freely open and
closed and the bin switch must function properly.
Refer to the checklist below, then specifications/
diagnostics for individual components.
Harvest Cycle Diagnostic List
1. Suction, liquid line shut off valves and receiver
service valve are fully open?
2. Line set properly sized?
3. Suction and liquid line sets are insulated?
4. Refrigerant charge is correct? (Overcharge or
undercharge affects harvest cycle)
5. Headmaster opperating correctly? (Check
operation in freeze and harvest cycle)
6. Condenser fan shutting off during harvest cycle?
7. Cool vapor valve energized and open?
8. Liquid line kinked between condenser and ice
machine head section?’
9. TXV flooding during the freeze cycle?
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