USER GUIDE
Troubleshooting Extended
USER GUIDE
Troubleshooting - Extended 1
u-line.com
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE •
SERVICE
Troubleshooting - Extended
NORMAL OPERATING SOUNDS
All models incorporate rigid foam insulated cabinets to
provide high thermal efficiency and maximum sound
reduction for its internal working components. Despite this
technology, your model may make sounds that are
unfamiliar.
Normal operating sounds may be more noticeable because
of the unit’s environment. Hard surfaces such as cabinets,
wood, vinyl or tiled floors and paneled walls have a
tendency to reflect normal appliance operating noises.
Listed below are common refrigeration components with
brief description of the normal operating sounds they
make. NOTE: Your product may not contain all the
components listed.
• Compressor: The compressor makes a hum or pulsing
sound that may be heard when it operates.
• Evaporator: Refrigerant flowing through an evaporator
may sound like boiling liquid.
• Condenser Fan: Air moving through a condenser may
be heard.
• Automatic Defrost Drain Pan: Water may be heard
dripping or running into the drain pan when the unit is
in the defrost cycle.
Specific Errors and Issues
CAUTION
!
Never attempt to repair or perform maintenance
on the unit until the main electrical power has
been disconnected from the unit.
TROUBLESHOOTING GUIDE
Concern
Potential Causes
Action
Not Cooling
Compressor overheating
Verify proper air flow through condenser. (Refer to Airflow/General
information Section of this manual)
Confirm condenser fan operation. (Refer to Airflow/General
information Section of this manual)
Compressor not operating
Test overload and relay, replace as needed.
Compressor operating - no cooling
Refer to Refrigeration System Diagnosis Guide Section of this
manual.
Evaporator fan not operating, convect cool
models only
Refer to Convection Cooling Section of this manual. convect cool
models only
Frozen Product
Control set too cold
Refer to Adjusting Air Temperature Section of this manual.
Frost Buildup Inside
Unit
Door ajar or restricted from closing
Inspect/Repair door closure, adjust as needed.
Internal Lights Not
Working
Door switch misaligned or defective
Check light switch, wiring and acuator. Adjust as needed.
Noisy
Refrigeration tubing touching cabinet
Carefully reposition tubing.
Fan blade obstruction (wiring, foam
insulation, packaging material)
Remove obstruction.
Ice Buildup In Drain
Trough or Drain
Problem
Obstructed drain cup or tube
Clear as needed, test flow.
Kinked condensate drain line
Reroute condensate drain line and test flow.
Drain trough and cup misaligned
Trough is slotted for adjustment. Loosen retainers and adjust as
needed.
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