Troubleshooting
22
©2013 Viking Preferred Service
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 the door lock position switches
With the door in the unlocked position, the S1 switch
(N.O.) is activated by the motor cam. Shown below
are the switch positions and wire colors. To test, check
continuity between the blue and green wires. The
reading should be 0 ohms. The S2 switch is N.O. and
will read infinite ohms (∞) when the door is unlocked.
Shown below is the closed circuit in red.
When the door locks, the S1 switch (N.O.) is no longer in
contact with the motor cam and will read 0 ohms. The S2
switch is N.O. and should close when the door is locked.
To test, check continuity between the orange and green
wires. The reading should be 0 ohms when the door is
locked.
Shown below is the closed circuit in red.
