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.
WARNING!
Ground Wire
Control Board P12
Neutral
Arrow 1
Arrow 2
The dishwasher uses a ow-through heater
that will heat
the water as it
passes though
the center of
the heater. In
order to remove,
unplug the 2-wire
connector that
supplies power
to the heating
element and
the ground wire
which connects
to a spade
terminal on the heater housing. This image
shows the connections.
Disassembly
30 ©2012 Viking Preferred Service
Water Heater Disassembly
Next, disconnect the two clamps that hold
the heater assembly to both the sump outlet
(Arrow 1) and
circulation pump
inlet (Arrow 2)
shown here. The
heater can now
be removed for
service. You will
need to transfer
the two 1-1/2” OD
hoses to the new
heater assembly.
The element is a
120-volt,12 ohm,
10 amp, 1200
watt draw. It is
controlled from
P12 (gray) to
Neutral on the main terminal block.
The water temperature sensor will sense the
temperature of the water throughout the wash
cycle. It is an N.T.C (Negative Temperature
Control) sensor which reads approximately
47k Ω ohms at 77° ambient. As the water
temperature rises, the resistance drops.
In order to remove, unplug the 2-wire connec-
tor and then twist the sensor counterclock-
wise to release from the sump assembly. The
image below shows the temp sensor in the
locked position. Grasp the sensor tabs and
twist counterclockwise to release.
Water Temperature Sensor Removal
To Unlock
To Control Board
The image below shows the temp sensor in
the unlocked position.
Unlocked
While grasping the tabs, pull the sensor out
of the sump assembly as shown.
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