Viking DDBF036LSS, Service Manual

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Troubleshooting Chart
©2007 Viking Preferred Service 15
Symptom Possible Cause Corrective Action
Excessive door opening Consumer education.
Overloading of shelves Consumer education.
Warm or hot foods placed in
cabinet Consumer education.
Cold control set too warm Set control to colder setting.
Poor door seal Level cabinet. Adjust hinges. Replace gasket.
Refrigerator airflow Check damper is opening by removing grille. With
door open, damper should open. Replace if faulty.
Interior light remains on Check switch. Replace if necessary.
Faulty condenser fan or
evaporator fan Check fan and wiring. Replace if necessary.
Refrigerator section too
warm
Faulty compressor Replace compressor.
Refrigerator temperature
control set too cold Adjust refrigerator temperature control. Refrigerator section too
cold
Refrigerator airflow not
properly adjusted Check air flow.
Defrost thermostat faulty Check defrost thermostat. Replace if failed.
Evaporator fan faulty Check fan motor. Replace if failed.
Defrost heater remains open Check defrost heater continuity. Replace if failed.
Defrost control faulty Check control and replace if failed.
Open wire or connector Check wiring and connections. Repair as necessary.
Frost or ice on
evaporator
Refrigerant shortage or
restriction Check for leak or restriction. Repair, evacuate and
recharge system.
Loose wire or thermostat
connections Check wiring and connections. Repair as necessary.
Supply voltage out of
specification Check input voltage. Correct any supply problems.
Overload protector open Check overload protector for continuity. If open,
replace overload. Ensure overload/compressor are
below trip temperature before testing.
Faulty compressor motor
capacitor (some compressors
do not require motor
capacitor) Check capacitor for open/short. Replace if necessary.
Discharge capacitor before testing.
Faulty fan motor Check fan motor. Replace if failed.
Restricted air flow Check condenser and grille for dirt. Clean.
Unit starts and stops
frequently (cycles on
and off)
Refrigerant shortage or
restriction Check for leak or restriction. Repair, evacuate and
recharge system.