Checking The Door Lock Position Switches - Viking RDSCD230-5B 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.

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/white and brown 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.
©2012 Viking Preferred Service
When the door locks, the S1 switch (N.O.) is no longer
in contact with the motor cam and will read infinite ohms
(∞). The S2 switch is N.O. and should close when the
door is locked. To test, check continuity between the
orange and brown wires. The reading should be 0 ohms
when the door is locked.
Shown below is the closed circuit in red.
Troubleshooting
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