Manitowoc QuietQube SD0672C Technician's Handbook page 160

Suction Pressure High Checklist
Improper Installation
• Refer to "Installation/Visual Inspection Checklist"
page 151
Discharge Pressure
• Discharge pressure is too high and is affecting
suction pressure – refer to "Freeze Cycle
Discharge Pressure High Checklist" page 157
Improper Refrigerant Charge
• Overcharged
• Wrong type of refrigerant
• Non-condensable in system
Other
• Non-Manitowoc components in system
• Harvest valve leaking
• TXV flooding (check bulb mounting)
• Defective compressor
NOTE: Do not limit your diagnosis to only the items
listed in the checklists.
160 Part Number 80-1505-3 6/11