144 Part Number STH025 11/16
Freeze Cycle Discharge Pressure Low Checklist
Improper Installation
• Refer to “Installation/Visual Inspection Checklist” on
page 136
Air Cooled Condensers
• Defective head pressure control valve, won’t bypass
“Head Pressure Control Valve” on page 197
• Defective fan cycle control, stuck closed
“Fan Cycle Control” on page 187
Water Cooled Condensers
• Water Regulating Valve out of adjustment
• Water Regulating Valve Defective
Other
• Undercharged
• Wrong type of refrigerant
• Non-Manitowoc components in system
• Liquid line/component restricted
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