Troubleshooting - Extended - U-Line 1224RF User Manual & Service Manual

USER GUIDE
SAFETY • INSTALLATION & INTEGRATION • OPERATING INSTRUCTIONS • MAINTENANCE •

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 technically advanced diagnostic capabilities of the
electronic controls utilized on the 1200 and 2200
series units 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
performance can be identified by directly viewing
thermistor readings in the service mode.
Component failure issues can be identified through
service mode menu #19, "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
+1.800.779.2547 for assistance.
TROUBLESHOOTING GUIDE
Concern Potential Causes
Not Cooling Compressor overheating
Compressor not operating
and thermistor
Care Facility" at
Suggested Remedy
Verify proper air flow through condenser. Is condenser clean?
Confirm condenser fan operation.
Confirm proper compressor operating voltage. Use #19,
Component Testing in Service Mode.
Confirm proper compressor operating voltage. Use #19,
Component Testing in Service Mode.
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 a 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.
Solenoid Valves: An occasional clicking sound may be
heard as solenoid valves are operated.
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SERVICE
Troubleshooting - Extended 1