Diagnostics
©2012 Viking Preferred Service 49
Troubleshooting Guide
Below and on the following page are some general guides should a problem be detected. Please refer to
the test procedures in this manual to determine the defective component.
Problem Probable Cause Correction
Unit will not operate Power supply
Circuit breaker
Power switch
Verify voltage
Reset breaker
Turn to the “ON” position
Water overflows defrost pan Unit not level
Float switch
Pan heater
Ensure unit is level
Verify operation of float
Verify heater is working
Ice maker will not operate Freezer too warm
Shut off arm
Water valve
Water supply
Verify freezer temperature
Verify the arm is in the “ON” position
Verify valve operation
Verify water supply
Refrigerator too warm Door opening
Warm food placed in unit
Control setting
Door seal
Airflow
Refrigerator fan
Minimize door openings
Allow temperatures to stabilize
Move control to medium setting
Verify closure, replace if needed
Ensure airflow is not obstructed
Verify movement/operation of fan
Refrigerator too cold Temperature setting
Control board
Airflow
Move control to medium setting
Verify proper operation
Verify airflow is proper
Freezer too warm Control setting
Door seal
Dirty condenser
Control board
Move control to medium setting
Verify closure, replace if needed
Clean condenser coil
Verify operation
Freezer too cold Temperature setting
Defrost thermostat
Control board
Move to medium setting
Verify thermostat is closing
Verify operation
Unit runs continually Control setting
Door seal
Dirty condenser Condens-
er/evaporator fan Control
board
Freezer thermistor
Move to medium setting
Verify closure, replace if needed
Clean condenser coil
Verify movement/operation of fan
Verify operation
Verify thermistor is not shorted
Frost on evaporator Defrost thermostat
Evaporator fan
Defrost heater
Verify thermostat is closing
Check connection and possible short open condition
Unit running and no lights Sabbath Mode
Open circuit
Verify operation of Sabbath Mode
Repair/replace wiring
To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test
procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.
Ensure all ground wires are connected before certifying unit as repaired and/or operational.
WARNING!
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