Checking Solenoid Operation; Bake Solenoid; Broil Solenoid; Door Lock Assembly - 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.
Solenoid Operation).

Checking Solenoid Operation

The solenoid valve is a coil-operated mechanism that
opens when energized. The DSI module sends voltage
to the solenoid valve to allow gas flow.

Bake Solenoid

Disconnect power to the range. Verify gas supply is
in open position. Access the solenoid valve (see Gas
Solenoid Valve Removal). Connect power. Check for
10.75 VAC present on bake solenoid white/black to
brown while arcing, yet no gas present to bake burner.
If no voltage is present, check and repair wiring. If
voltage is present, check resistance on bake solenoid.
Disconnect power to the range. Check to see if bake
solenoid resistance is approximately 210 ohms.
Replace the solenoid if the resistance is not close.

Broil Solenoid

Disconnect power to the range. Verify gas supply is
in open position. Access the solenoid valve (see Gas
Solenoid Valve Removal). Connect power. Check for
10.75 VAC present on broil solenoid white/black to
yellow while arcing, yet no gas present to broil burner.
If no voltage is present, check and repair wiring. If
voltage is present, check resistance on broil solenoid.
Disconnect power to the range. Check to see if broil
solenoid resistance is approximately 210 ohms.
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Replace the solenoid if the resistance is not close.

Door Lock Assembly

The door lock motor is a 120 VAC motor. One side of the
motor is wired directly to N (white). L1 power to the lock
motor is connected on the P6 connector on the control
board. When the relay energizes, L1 power is sent to the
lock motor. The photo below shows the P6 connector.
There are three micro-switches mounted on the door
lock assembly. One switch is not used on this model,
only used on griddle models.
When the door is in the unlocked position, the cam
is depressing the S1 switch plunger. The N.O. switch
contact is closed and a completed circuit is made at the
P29 connection between the white/green and blue wires.
This signals the board that the door is unlocked.
S2 is also N.O. and is open when the door is unlocked.
When the lock motor is activated and begins to lock,
the S1 contact opens. When the plunger catches the
door liner and pulls inwards, the S2 switch plunger is
actuated. The switch contact is closed and a completed
circuit is made at the P29 connection between the white/
green and orange wires. This signals the board that the
door is locked.
When it is time to unlock the door, power is sent to the
door lock motor and it continues its rotation. The plunger
releases the door liner and opens the contact on S2.
When the door is fully opened, S1 is closed by the motor
cam. This will signal the board that the door is unlocked.

Testing Lock Motor

With the connector removed from the P6 board
connection, use an ohmeter to measure resistance
between neutral and the white/black wire at P6. The
resistance should be approximately 6.82K ohms. If no
resistance is read, remove the latch motor to repair/
replace (Follow the latch motor disassembly procedure).
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