Checking Oven Bake Operation - Viking RVGR3305B Service Manual

Troubleshooting
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.

Checking Oven Bake 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 a bake
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 across 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.
12
Check resistance of RTD grey to grey (see RTD
Characteristics). Resistance should be between 1000
and 1650 ohms, if not replace RTD. Also check each
wire to chassis ground to ensure it is not shorted to
ground.
If resistance on the RTD is correct, check resistance
of selector switch and thermostat (see Selector and
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 to Bake and thermostat to 350˚F.
Check for 120 VAC present on DSI module H1 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 S1 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 bake solenoid (see Checking
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