User Guide & Service Manual

USER GUIDE
u-line.com
Troubleshooting Extended
Troubleshooting - Extended
SPECIFIC ERRORS AND ISSUES
The advanced diagnostic capabilities of the electronic
controls utilized on the 1, 3, and 5 Class units allow for
easy and thorough troubleshooting.
Navigation of the control is the key and is explained in
the CONTROL OPERATION section of the manual, along
with control button layout, control function descriptions,
a service mode menu and service menu selection
explanations.
Verication of temperature and thermistor performan
ce can
be identied by directly viewing thermistor readings in the
service mode.
Component failure issues can be identied through
service mode menu #20, “Component Testing.” Individual
components can be switched on and o to check for both
proper function of a specic component and also delivery of
supply voltage to the components through the relays and
DC outputs located on the relay/power board.
Included in this section are some diagnostic tips
and of course, if additional help is required, please
contact the U-Line Corp, “Customer Care Facility” at
+1.414.354.0300 for assistance.
NORMAL OPERATING SOUNDS
All models incorporate rigid foam insulated cabinets to
provide high thermal eciency 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 oors and paneled walls have a
tendency to reect normal appliance operating noises.
Listed below are common refrigeration components with a
brief description of the normal 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 owing 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.
Solenoid Valves: An occasional clicking sound may be
heard as solenoid valves are operated.
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