Broil Relay (Inner And Outer); Convection Element - Viking vdsc530t Service Manual

Service Diagnostics and Procedures
Control Board Diagnosis

Broil Relay (Inner and Outer)

When a broil element is selected by the EOC board,
12 VDC is sent to the broil 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
broil elements. (L1 power is controlled by the
line break relay).
Inner Broil Relay
Select a 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 gray wire on P6. If 0 VAC
is read, disconnect power and remove the P6
Molex plug.
Reconnect power and
using your Ohm meter,
check for continuity
between the two relay
contacts (refer to photo,
right). When the relay is
energized; if you read
infinite ohms (∞) this
indicates a bad relay
and you will need to replace the control board.
If you read 0 ohms, the relay contact is closing.
Outer Broil Relay
Select a 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 violet wire on P6. If 0 VAC is
read, disconnect power and remove P6 Molex plug.
Reconnect power and
using your Ohm meter,
check for continuity
between the two relay
contacts (refer to photo,
right). When the relay is
energized; if you read
infinite ohms (∞) this
indicates a bad relay
and you will need to
replace the control board. If you read 0 ohms,
the relay contact is closing.
© 2010 Viking Preferred Service
Place meter
leads here
LED
Place meter
leads here
LED

Convection Element

Locate the P2 connector and the line break relay on
control board. The P2 connector will have a Molex
plug containing a white/red and black wire. The
white/red wire goes to the convection element and
the black wire is L1 input from main power supply.
P-2
Line Break Relay
With the power off and Molex connector removed
from the P2 control board connection, use an
Ohm meter to measure resistance between the
white/red wire in the Molex plug and the yellow
wire at the line break relay. This will measure the
resistance of the convection element and should
be approximately 18 . If the element fails to read
Ω
resistance, remove element to repair/replace (follow
convection element disassembly procedure).
P-2
Line Break Relay
40