PROBLEM
PROBABLE CAUSE
CORRECTION
Product zone
1.Control Setting Too High.
1.Adjust T-Stat.
temperature too
2.Inadequate Air Circulation.
2.
Rearrange Product Load To
high.
Improve Air Circulation.
3.Dirty Condenser
3.Clean Condenser Coil
Suction line frosted
1.Overcharge Of Refrigerant.
1.Evacuate And Re-charge.
or sweating.
2.Evaporator Fan Not Running.
2.Determine Reason And Correct.
3.Expansion Valve Stuck Open.
3.Clean Valve, Evacuate And
Re-charge.
4.Expansion Valve Superheat Too Low.
4.Adjust Superheat To Required
Setting.
Liquid line frosted,
1.Restriction In Drier Strainer.
1.Replace Drier, Evacuate And
cold, or sweating.
Re-charge.
2.Liquid Line Service Valve Partially Closed.
2.Open Valve Fully Or Replace If
Necessary.
Noisy condensing
1.Loose Parts or Mountings
1.Tighten All Mounting Parts And
unit.
Shroud Cover.
2.Tubing Rattle Or Vibration.
2.Reform Tubing To Be Free Of
Contact.
3.Bent Fan Blade Causing Excessive Vibration.
3.Replace Fan Blade.
4.Fan Bearings Worn.
4.Replace Fan Motor.
Thermometer reads
1.Calibration.
1.Consult Operations Manual And
different than actual
Calibrate.
Temperature
2.Defective.
2.Replace.
Water leak inside
1.Condensate Drain Pan Not Installed Properly.
1.Consult Operations Manual For
unit.
Install Instruction.
2.Unit Not Level.
2.Make Sure Unit Is Level Or Pitched
Back Slightly.
3.Drain Pan Misaligned.
3.Make Sure Drain Pan Is Aligned
Properly.
4.Defective Drain Pan.
4.Replace.
Doors Misaligned.
1.Shifted During Shipping.
1.Refer To Operation Manual For
Hinge Adjustment.
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