© 2011 Viking Preferred Service
53
Service Diagnostics and Procedures
Drying System
At the beginning of the wash cycle, 12 volts is sent
to the door wax motor to close the damper during
the wash cycle. When the unit has advanced to the
dry cycle, the voltage is removed from the door wax
motor and the door opens to allow the drying to
take place. The control board then sends 12 VDC
to blowermotor to operate. At selected intervals,
120 VAC is also sent to the drying heater coil. As
the heated air enters the wash chamber, it is mixed
with the hot, moisture laden air and is vented out
through the open assembly in the upper section of
the door.
As the air is moving through the drying vent
assembly, the hot air cools and moisture begins to
condense into the tube. The water then flows down
the chamber and flows back into the sump of the
machine. The image below shows the air flow inside
the tube.
The image below is a diagram of the water inlet/
dryer inlet tube assembly. During a fill cycle, water
enters the chamber (shown in blue) and fills the
dishwasher. During a dry cycle, ambient air is blown
into the chamber (shown in pink), then into the
dishwasher tank from the blower motor.
Water Inlet
Air Inlet
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