Troubleshooting - U-Line U-3018RFOL-00 Service Manual

Troubleshooting

!
CAUTION
Never attempt to repair or perform maintenance on the unit until the main electrical power has been disconnected from
the unit.
Concern
Not Cooling Compressor overheating
Compressor not operating
Compressor operating - no cooling
Evaporator fan not operating
Frozen Product Ensure proper use of Quick Chill mode
Control set too cold
Review logged error codes
Thermistor failure
Frost Buildup Door Ajar or Restricted from Closing
Inside Unit
Evaporator fan not operating
Thermistor failure
Display Not Unit placed in Sabbath mode
Working
Display unplugged
Display wiring broken or damaged
Internal Lights Not Control Setting
Working
Door switch misaligned or defective
Noisy Refrigeration tubing touching cabinet
Fan blade obstruction (wiring, foam insulation,
packaging material)
Potential Causes
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).
Confirm proper compressor operating voltage (Refer to Relay Toggle/
General Information Section of this manual to initiate power to the
compressor).
Confirm proper compressor operating voltage (Refer to Relay Toggle/
General Information Section of this manual to initiate power to the
compressor).
Test overload and relay, replace as needed.
Refer to Refrigeration System Diagnosis Guide Section of this manual.
Refer to Convection Cooling Section of this manual.
Refer to Quick Chill Section of this manual.
Refer to Adjusting Temperature Settings Section of this manual.
Refer to Fault System Diagnosis Guide Section of this manual.
Refer to Thermistor Failure Section of this manual.
Refer to All Errors Section of this manual to read errors such as Door
Open 5M.
Refer to Convection Cooling Section of this manual.
Refer to Thermistor Failure Section of this manual.
Refer to Sabbath Mode Section of this manual.
Verify that both ends of the display wiring are firmly connected.
Perform continuity test of wiring and replace as needed.
Refer to the Interior Lighting Section of this manual.
Unit set to Sabbath Mode. Refer to the Sabbath Mode Section of this
manual.
Refer to Reed Switch Section of this manual.
Carefully reposition tubing.
Remove obstruction.
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Troubleshooting
Suggested Remedy
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