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174 Part Number: 000015430 Rev 02 5/20
Harvest Cycle
REMOTE CONDENSER
The head pressure control cycles into full bypass due to the
pressure drop when the harvest valve opens. Refrigerant
flows from the compressor to the evaporator through the
harvest valve and the head pressure valve is out of the
circuit.
Undercharge Symptoms
• Long Freeze or Long Harvest in control board memory
and an alert indicating Long Freeze or Long Harvest.
• Harvest cycle suction pressure is low.
• Harvest cycle discharge pressure is low.
• Liquid line entering receiver feels warm to hot in the
freeze cycle.
Overcharge Symptoms
• Long Harvest in control board memory and an alert
indicating Long Harvest is displayed.
• Harvest cycle discharge pressure is normal.
• Freeze cycle time, suction and discharge pressure are
normal and the ice machine will not harvest. The sheet
of ice cubes show little or no sign of melting when
removed from the evaporator after the harvest cycle
has been completed. (If the cubes are melted you have
a release problem, clean the ice machine.)
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