© 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)
4.7
1
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)
1637
1
Evaporator Fan
Control
J6-5 (Black/Yellow) to J6-1 (Black/Green)
6.54K
1
Damper
Control
J1-4 (Red) to J1-7 (Yellow/Red)
2.4K
1
Damper Switch
Control
J1-4 (Red) to J2-4 (Blue/Red)
0
1
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.
8.8
1
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
0
1
door open
'1
door closed
Refrigerator Interlock Switch
(N.O.)
Control
J2-10 (Black/Red) to J1-4 (Red)
0
1
door closed
'
door open
Freezer Light Switch
Control
J1-4 (Red) to J2-6 (Gray/White).
0
1
door closed
'
door open
Freezer Lights
Control
J1-6 (Red/White) to J2-6 (Gray/White)
25.1
1
Ice Maker Switch
Control
J2-8 Violet) to J2-2 (Gray)
0
1
switch on
'1
switch off
Ice Maker
Control
J2-8 (Yellow) to J1-8 (White)
266
1
Ice Auger
Control
J2-9 (Pink) to J1-8 (White)
4.4
1
Icemaker Thermistor
Control
J3-4 (White/Black) to J3-5 (White/Orange)
9.31K
1
@ room temperature
Freezer Thermistor
Control
J3-2 (White/Yellow) to J3-5 (White/Orange)
9.38K
1
Refrigerator Thermistor
Control
J3-1 (White/Blue) to J3-5 (White/Orange)
7.63K
1
Ice Fan
Control
J6-2 (Red/Black) to J6-4(Blue/Black)
26.8K
1
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.