DISCHARGE PRESSURE HIGH CHECKLIST Problem
•Cause
Improper Installation
•Refer to “Installation/Visual Inspection Checklist”
Restricted Condenser Air Flow
•High inlet air temperature
•Condenser discharge air
•Dirty condenser fins
•Defective fan motor
Improper Refrigerant Charge
•Overcharged
•
•Wrong type of refrigerant
Other
•
•High side refrigerant lines/component restricted (before
FREEZE CYCLE DISCHARGE PRESSURE LOW CHECKLIST
Problem
•Cause
Improper Installation
•Refer to “Installation/Visual Inspection Checklist”
Improper Refrigerant Charge
•Undercharged
•Wrong type of refrigerant
Other
•
•High side refrigerant lines/component restricted (after condenser)
•Ambient temperature too low
NOTE: Do not limit your diagnosis to only the items listed in the checklists.
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