Checking Oven Broil Operation; Convection Broil Fan Operation - Viking RVGR3305B Service Manual

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.
Solenoid Operation).

Checking Oven Broil Operation

When operating properly, the range always has 120
VAC present on the control board and DSI module
when power is supplied. When the range is set to broil
operation, power is sent to the DSI module to begin
sparking and to the solenoid to open the valve for gas
flow. The DSI module will display faults using an LED on
the board (see Fault Codes for DSI Boards).
Disconnect power to the range. Access the control
components and wiring (see Control Components
Accessed). Connect power. Check for 120 VAC present
on control board L1 to N.
If voltage is not present on the control board L1 to N,
check voltage on the high limit switch. Replace high limit
switch if voltage is present.
Check for 120 VAC present on DSI module A to N. If no
voltage is present, check and repair wiring.
If voltage is present on control board and DSI module,
disconnect power to the range.
Check resistance of RTD grey to grey (see RTD
Characteristics). Resistance should be between 1000
and 1650 ohms, if not replace RTD.
If resistance on the RTD is correct, check resistance
of selector switch and thermostat (see Selector and
©2013 Viking Preferred Service
Thermostat Characteristics). If resistance readings
are not in line with the readings on the chart, replace
selector switch or thermostat.
If resistance readings for the selector switch and
thermostat are correct, connect power to the range.
Turn selector switch and thermostat to Broil. Check for
120 VAC present on DSI module H2 to N. If no voltage
present, check and repair wiring. If wiring OK, replace
control board.
If voltage is present, check for approximately 10.75 VAC
present on DSI module SC to S2 while arcing. You will
hear an audible clicking sound while the igniter is arcing.
Replace DSI module if no voltage is present.
If voltage is present, check broil solenoid (see Checking

Convection Broil Fan Operation

In convection broil operation the broil burner is turned
on for the first three minutes of the cycle. Then the
gas solenoid is shut off and the convection fan is
turned on for 60 seconds. At the end of sixty seconds
the convection fan is turned off and the broil ignitor
and solenoid are turned back on, allowing three more
minutes of the gas broil operating. This cycle continues
throughout the convection broil operation.
Broil ignition and operation can be troubleshot using the
previous explanation of normal broil operation shown
above.
Troubleshooting
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