Troubleshooting Chart
©2007 Viking Preferred Service 17
Symptom Possible Cause Corrective Action
Freezer temp control set too
cold
Adjust freezer temperature control. Freezer section too
cold
Faulty control Test control. Replace if failed.
Temperature control set too
cold
Adjust temperature control.
Dirty condenser or obstructed
grille
Check condenser and grille. Clean.
Poor door seal Level cabinet. Adjust hinges. Replace gasket.
Interior light remains on Check switch. Replace if necessary.
Faulty condenser fan or
evaporator fan
Check fan and wiring. Replace if necessary.
Faulty control Test control. Replace if failed.
Refrigerant shortage or
restriction
Check for leak or restriction. Repair, evacuate and
recharge system.
Refrigerant overcharge Check for overcharge. Evacuate and recharge
system.
Unit runs continuously
Air in system Check for low side leak. Repair, evacuate and
recharge system.
Unit runs continuously.
Temperature normal
Ice on evaporator Defrost unit.
Unit runs continuously.
Temperature too cold
Faulty defrost thermostat Check thermostat. Replace if necessary.
Loose flooring or floor not firm Repair floor or brace floor.
Cabinet not level Level cabinet.
Tubing in contact with
cabinet, other tubing, or other
metal
Adjust tubing.
Drip pan vibrating Adjust drain pan.
Fan hitting another part Ensure fan properly aligned and all attaching
hardware and brackets are tight and not worn. Tighten
or replace.
Worn fan motor bearings Check motor for worn bearings. Replace if necessary.
Compressor mounting
grommets worn or missing.
Mounting hardware loose or
missing
Tighten hardware. Replace grommets if necessary.
Noisy operation
Free or loose parts causing or
allowing noise during
operation
Inspect unit for parts that may have worked free or
loose or missing screws. Repair as required.
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