© 2012 Viking Preferred Service
24
Service Diagnostics and Procedures
Relay boards
The unit has an upper and lower relay board that controls functions of the respective oven cavity. Components
can be diagnosed via the relay board. With the relay board accessed
(see Relay Board Access procedure), the
following can be measured:
Component
Operating
Voltage
(Approx.)
*Resistance (Approximate)
Oven Board Test Location
Outer Bake Element
240 VAC
28.4
Ω
(P5) Blue – line break Yellow
Inner Broil Element
240 VAC
23.7
Ω
(P6) Violet – line break Yellow
Outer Broil Element
240 VAC
45.5
Ω
(P6) Gray – line break Yellow
Convection Element
240 VAC
34.4
Ω
(P2) White/Red – line break Yellow
Cooling Fan Motor
120 VAC
18.4
Ω
(P11) White/Black – (P1) White (Power Board)
Convection Motor –
Hi Speed
120 VAC
38.3
Ω
(P4) Orange/Black – (P1) White (Power Board)
Convection Motor –
Low Speed
120 VAC
44.1
Ω
(P4) Orange/White – (P1) White (Power
board)
Oven Lights
120 VAC
13.5
Ω
(P12) Yellow/Black – (P1) White (Power Board)
RTD
-
1089
Ω
@ room temp
(P14) Violet – (P14) Gray
Door Latch Motor
120 VAC
2180 k Ohms
(P12) Black/White – (P1) White (Power Board)
Door Switch
(Door Open)
8.0 VDC
Infinite
Ω
door open
(P15) Gray – (P15) Brown (DL Com)
(P15 disconnected)
Door Switch
(Door Closed)
0 VDC
0
Ω
door closed
(P15) Gray – (P15) Brown (DL Com)
Oven Light Switch
ON (Door Closed)
8.0 VDC
0
Ω
light switch on
(P15) Violet/White – (P15) Brown
Oven Light Switch
OFF (Door Closed)
0 VDC
Infinite
Ω
light switch off
(P15) Violet/White – (P15) Brown
(P15 disconnected)
Door Latch Switch
8.0 VDC
(Door Locked)
0
Ω
door unlocked Infinite
Ω
door
locked (P15 disconnected)
(P15) Blue/White – (P15) Brown
Door Lock Switch
8.0 VDC
(Door Unlocked)
Infinite
Ω
door unlocked (P15 discon
-
nected) 0
Ω
door locked
(P15) Orange – (P15) Brown
Hall Effect Sensor
-
425
Ω
connector plugged in and
6.36M
Ω
connector unplugged
(P8) Red – (P8) Black
Hall Effect Sensor
-
9.9K
Ω
connector plugged in and
21.2M
Ω
connector unplugged
(P8) White – (P8) Black
Clean Light
7.45 VDC
Infinite
Ω -
(P1 disconnected)
(P1) Orange/Black – (P1) Violet
Cycle Light
7.45 VDC
Infinite
Ω -
(P1 disconnected)
(P1) White/Black – (P1) Violet