146 Part Number STH025 11/16
Suction Pressure High Checklist
Improper Installation
• Refer to “Installation/Visual Inspection Checklist” on
page 136
Discharge Pressure
• Discharge pressure is too high and is affecting suction
pressure – refer to “Freeze Cycle Discharge Pressure
High Checklist” on page 143
Improper Refrigerant Charge
• Overcharged (also see “Freeze Cycle Discharge
Pressure High Checklist” on page 143)
• Wrong type of refrigerant
• Non condensable in system
Components
• Harvest valve leaking
• Harvest pressure solenoid valve leaking
• TXV flooding
• Defective compressor
Other
• Non-Manitowoc components in system
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