© 2010 Viking Preferred Service
38
Service Diagnostics and Procedures
Component Testing
The unit has a main control board and UI (dispenser) board that control functions of the respective
refrigerator/freezer compartment. Components can be diagnosed via these boards. With the board accessed
(refer to control board access procedure, page 71 and dispenser board access procedure, page 67), the
following can be measured:
Component Testing–Control Board
Component Board Test Point Reading
Condenser Motor Control J1-1 (Blue) to J1-8 (White) 4.71
Defrost Terminator Control J1-2 (Brown) to J2-5 (Orange) ' Open 0 1 Closed
*Depends on coil temperature
Evaporator Fan Motor
(120 volt)
Control J1-3 (Black) to J1-8 (white) 16371
Evaporator Fan Control J6-5 (Black/Yellow) to J6-1 (Black/Green) 6.54K1
Damper Control J1-4 (Red) to J1-7 (Yellow/Red) 2.4K1
Damper Switch Control J1-4 (Red) to J2-4 (Blue/Red) 01 switch closed
'1 switch open
Refrigerator Lights Control J1-6 (Red/White) neutral to J1-4 (Red) Line
Conditions: Either fresh food door must be
open and power disconnected.
8.81
Refrigerator Light Switch
(N.C.)
Control J2-1 (Tan/Red) to J1-4 (red).
Conditions: Either fresh food door must be
open and power disconnected
01 door open
'1 door closed
Refrigerator Interlock Switch
(N.O.)
Control J2-10 (Black/Red) to J1-4 (Red) 01 door closed
' door open
Freezer Light Switch Control J1-4 (Red) to J2-6 (Gray/White). 01 door closed
' door open
Freezer Lights Control J1-6 (Red/White) to J2-6 (Gray/White) 25.11
Ice Maker Switch Control J2-8 Violet) to J2-2 (Gray) 01 switch on
'1 switch off
Ice Maker Control J2-8 (Yellow) to J1-8 (White) 2661
Ice Auger Control J2-9 (Pink) to J1-8 (White) 4.41
Icemaker Thermistor Control J3-4 (White/Black) to J3-5 (White/Orange) 9.31K1 @ room temperature
Freezer Thermistor Control J3-2 (White/Yellow) to J3-5 (White/Orange) 9.38K1
Refrigerator Thermistor Control J3-1 (White/Blue) to J3-5 (White/Orange) 7.63K1
Ice Fan Control J6-2 (Red/Black) to J6-4(Blue/Black) 26.8K1
WARNING
To avoid risk of electrical shock, personal injury, or death, disconnect electrical power to unit using power
switch before servicing. After servicing, reconnect power using power switch.
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