Suction Pressure Low Checklist
Improper Installation
•
Refer to "Installation and Visual Inspection Checklist"
on page 60.
Discharge Pressure
•
Discharge pressure is too low, and is affecting suction
pressure, refer to "Freeze Cycle Discharge Pressure
Low Checklist"
Improper Refrigerant Charge
•
Undercharged
•
Wrong type of refrigerant
Other
•
Non-OEM components in system
•
Improper water supply over evaporator refer to
"Water System Checklist" on page 61.
•
Loss of heat transfer from tubing on back side of
evaporator
•
Restricted/plugged liquid line drier
•
Restricted/plugged tubing in suction side of
refrigeration system
•
TXV starving
NOTE: Do not limit your diagnosis to only the items listed
in the checklists.
76
Part Number STH047 5/16