–141–
Discharge Pressure High Checklist
Problem
Cause
Improper Installation
Refer to “Installation/Visual Inspection Checklist”
Condenser Restriction
High inlet air temperature
Condenser discharge air recirculation
Dirty condenser fins
Defective fan cycling control (CVD0675/CVD1476
does not use a fan cycle control)
Defective fan motor
Improper Refrigerant Charge
Overcharged
Non-condensable in system
Wrong type of refrigerant
Other
Non-Manitowoc components in system
High side refrigerant lines/component
Restricted (before mid-condenser)
Defective head pressure control valve
Water Inlet Valve is incorrectly adjusted (CVD1476
only)
NOTE: Do not limit your diagnosis to only the items
listed in the checklists.