Test Procedures - Dsi Module - Viking VGSO100 Service Manual

DSI Module (continued)
if a flame is present in the oven for more than 10
seconds after the gas valve closes, or if a flame is
lost unexpectedly after being established, the unit
will go into a lockout mode. During this mode the
gas valve and igniters will be shut down. To reset
the lockout mode, cycle power to the unit and wait
one minute before trying oven operation.
Inputs to the module are L1 power from the power
cord at position 10, neutral from the power cord
at position 4, L1 for bake at position 6, and L1
for broil at position 7. Outputs from the module
are bake valve at position 1, common for the
bake and broil valves at position 2, broil valve at
position 3.
Test Procedures – DSI Module
Remove the unit from installation, remove the
rear cover, the module will be accessible at the
left rear viewed form the back of the unit.
J1-1 Grey 8 to 18 VDC to Bake Solenoid
J1-2 Purple Common to Bake / Broil Solenoid
J1-3 Brown 8 to 18 VDC Broil solenoid
J1-4 White Neutral connection to DSI Module
J1-6 Yellow 120 VAC from Selector BAKE
J1-7 Red 120 VAC from Selector BROIL
J1-10 Black Line Voltage to DSI module.
©2012 Viking Preferred Service
Service Procedures
Bake Mode
1. Set the Volt-Ohm meter to read 120 VAC.
2. Verify 120 VAC at module position 4 (white)
and 10 (black). If no voltage is present, verify
source voltage is accurate and check the
wiring.
3. Verify 120 VAC at module position 4 (white)
and 6 (yellow). If no voltage is present, verify
the selector switch is closed between contacts
BA (yellow) and 2 (blue), 120 VAC is present
between thermostat P7 (red) and P1 (neutral),
check wiring.
4. Set the Volt-Ohm meter to read 8 – 18 VDC.
5. Verify 8-18 VDC at module position 1 (gray)
and 2 (purple). If voltage is not in range and
wiring is OK, replace the DSI module.
Broil Mode
1. Set the Volt-Ohm meter to read 120VAC.
2. Verify 120 VAC at module position 4 (white)
and 10 (black). If no voltage is present, verify
source voltage is accurate and check the
wiring.
3. Verify 120 VAC at module position 4 (white)
and 7 (red). If no voltage is present, verify the
selector switch is closed between contacts
BR (red) and 1 (green), 120 VAC is present
between thermostat P7 (red) and P1 (neutral),
check wiring.
4. Set the Volt-Ohm meter to read 8 – 18 VDC.
5. Verify 8 – 18 VDC at module position 3
(brown) and 2 (purple). If voltage is not in
range and wiring is OK, replace the DSI
module.
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