USER GUIDE
u-line.com
Troubleshooting Extended
TROUBLESHOOTING GUIDE
Concern
Potential Causes
Action
Not Cooling
Compressor overheating
Verify proper air flow through condenser. Is condenser clean?
Confirm condenser fan operation.
Compressor not operating
Test overload and relay, replace as needed.
Compressor operating - no cooling
Refer to System Diagnosis Guide.
Frozen Product
Control set too cold
Adjust Set Point Temp accordingly.
Thermistor failure
Check Error Log in Service Mode, OHM thermistor.
Frost Buildup
Inside Unit
Door Ajar or Restricted from Closing
Check door clearance to adjoining cabinetry. Check
distribution of product in unit.
Thermistor failure
OHM thermistor
Display Not
Working
Display unplugged
Verify that both ends of the display wiring are firmly
connected.
Display wiring broken or damaged
Perform continuity test of wiring and replace as needed.
Interior Lights Not
Working
Door switch misaligned or defective
Check the function of reed switch and door magnet
adjustment.
Noisy
Refrigeration tubing touching cabinet
Carefully reposition tubing.
Fan blade obstruction (wiring, foam
insulation, packaging material)
Remove obstruction.
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