Manitowoc QuietQube Series Technician's Handbook page 108

FREEZE CYCLE DISCHARGE PRESSURE HIGH CHECKLIST
Improper Installation
• Refer to "Installation/Visual Inspection Checklist" on
page 102
Air Condenser
• Dirty condenser filter
• Dirty condenser fins
• High inlet air temperature
• Condenser discharge air recirculation
• Defective "Fan Cycle Control" on page 154)
• Defective fan motor
• Defective head pressure control valve (Remote)
Other
• Overcharged
• Non-condensible (air) in system
• Wrong type of refrigerant
• Non-Manitowoc components in system
• High side refrigerant lines/component restricted
108 Part Number: 000015431 Rev01 5/19