Troubleshooting
©2012 Viking Preferred Service
11
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.
Bake Relay (Inner and Outer)
When a bake element is selected by the oven control
board, voltage is sent to the bake relay coils. A red LED
in front of each coil verifies coil voltage is being sent to
that particular relay. This does not indicate however that
the relay is functioning. When the individual element
relays are energized, (L1-black) power is sent through
the relay to the bake elements. (L2 power is controlled
by the line break relay.)
Inner Bake Relay
Select a Bake cooking program. When the inner relay
contact is energized (red LED lit at base of relay),
check for 240 VAC between the yellow wire at the line
break relay and the orange wire on P5. If 0 VAC is read,
disconnect power and remove P5 Molex plug.
Reconnect power and using your ohmeter, check for
continuity between the two relay contacts (refer to photo,
above). If you read infinite ohms (∞) when the relay is
energized, this indicates a faulty relay and you will need
to replace the control board. If you read 0 ohms, the
relay contact is closing.
Outer Bake Relay
Select a Bake cooking program. When the outer relay
contact is energized (red LED lit at base of relay)
check for 240 VAC between the yellow wire at the line
break relay and the blue wire on P5. If 0 VAC is read,
disconnect power and remove P5 Molex Plug.
Reconnect power and using your ohmeter, check for
continuity between the two relay contacts (refer to photo,
above). If you read infinite ohms (∞) when the relay is
energized, this indicates a faulty relay and you will need
to replace the control board. If you read 0 ohms, the
relay contact is closing.
Broil Element
Locate the P6 connector and the line break relay on the
control board. The P6 connector will have a Molex plug
containing a grey, black, and violet wire. The grey wire
goes to the outer broil element, the black wire is L1 input
from main power supply, and the violet wire goes to the
inner broil element.
With the power off and Molex connector removed from
the P6 control board connection, use an ohmeter to
measure resistance between the grey wire in the Molex
plug and the yellow wire at the line break relay. This will
measure the resistance of the outer broil element and
should be approximately 34 ohms. Likewise, the inner
broil element can be measured by reading resistance
between the violet wire in the Molex plug and the yellow
wire at the line break relay. A resistance of approximately
30 ohms should be found. If either element fails to read
resistance, remove the element to repair or replace
(Follow the broil element disassembly procedure).
