Troubleshooting Extended - U-Line UONB115-SS01A User Manual & Service Manual

USER GUIDE
Troubleshooting - Extended
CAUTION
!
Never attempt to repair or perform maintenance
on the unit until the main electrical power has
been disconnected from the unit.
SPECIFIC ERRORS AND ISSUES
The advanced diagnostic capabilities of the electronic
controls utilized on this unit allows 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.
Verification of temperature and thermistor performance can
be identified by directly viewing thermistor readings in the
service mode.
Component failure issues can be identified through
service mode menu #20, "Component Testing." Individual
components can be switched on and off to check for both
proper function of a specific 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 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.

Troubleshooting Extended

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 flowing through an evaporator
may sound like boiling liquid.
• Condenser Fan: Air moving through a condenser may
be heard.
Solenoid Valves: An occasional clicking sound may be
heard as solenoid valves are operated.
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