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!
Troubleshooting
©2012 Viking Preferred Service 41
High Voltage Board
Component Test
Point
Reading
Refrigerator/Con-
densate Fans
E1-E11 24 VDC
Evaporator Fans E2-E11 115 VAC
L1 E3-E11 115 VAC
Compressor / Con-
denser Fan
E4-E11 115 VAC
Defrost Terminator
(closed)
E5-E11 0 VAC
Defrost Terminator
(open)
E5-E11 115 VAC
Defrost Heater E6-E11 115 VAC
Ref door switch (top
right light)
E7-E11 115 VAC
Freezer door switch
(left light)
E8-E11 115 VAC
Neutral In E9-E11 N/A
Line In E10-E11 115 VAC
Ground E11 N/A
Neutral In (lights) E12-E11 N/A
Neutral Out (lights) E13-E11 115 VAC
Aux Heater (Dis-
penser units only)
E14-E11 115 VAC
E11 Ground
E1 Refrigerator/
Condensate Fans
E4 Compressor
E3 Line In–120 VAC
E2 Evaporator Fan
E7 Refrigerator Door
Switch
E8 Freezer Door Switch
E9 Neutral
L1 Line In - 120 VAC
E5 Defrost Terminator
E6 Defrost Heater
E12 Neutral in
E13 Light Relay
E14
E14 Aux Heater
High Voltage Board