Broil Igniter Testing; Dual Bake Valve Testing - Viking VGSO166 Service Manual

Service Diagnostics and Procedures

Broil Igniter Testing

The broil igniter provides an ignition source for the
gas being supplied by the gas valve. Once the end
user selects broil, power is supplied to the bake
igniter and it begins to glow red.
Broil Igniter
To access the broil igniter, open the oven door and
remove the oven racks. The igniter is accessible at
the top of the oven cavity.
With a Volt-Ohm meter set for resistance, measure
the igniter resistance. The broil igniter should be
approximately 106 Ω. Supply voltage to the igniter
is 120 VAC. As power is applied the igniter begins
to glow. A glowing igniter does not mean it is
good. Often times the igniter will glow, however it
is weak and does not supply enough current flow to
open the gas valve.
© 2009 Viking Preferred Service

Dual Bake Valve Testing

The bake valve supplies the gas flow to the burners
to allow ignition. As voltage is applied to the
bake igniter, the resistance begins to drop. As the
resistance drops, current flow through the gas valve
is increased. This increased current flow allows the
gas valve to open and gas to flow to the igniter.
Once the gas comes in contact with the hot igniter,
ignition occurs.
Test Points
To access the dual bake valve, remove the unit from
installation. Remove screws securing the access
panel on the right side. The bake valve is now
accessible.
With Volt-Ohm meter set for resistance, measure
the bake valve resistance. The valve should measure
approximately 1.2 Ω from W-BK and DBL WH –
BK. Current flow through the gas valve should be
3.2 – 3.6 Amps. Voltage to the valve is 3.2 – 3.6.
Applying voltage above this range to the valve can
cause damage to the valve.
Dual Bake Valve
®
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