Circulation Motor; Fill Valve - Viking FDB451 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.
(Some measurements require power and others require the unit not to be powered.)

Circulation Motor

The 200 Series Dishwasher uses a single
speed, capacitor assist wash motor. Voltage
between P5-1 and P5-2 should be 120 VAC
when the motor is activated. If voltage is not
present, verify wiring. If voltage is present and
the motor is not running, check the capacitor
and motor windings for proper readings.
P-5
Note: Testing the circulation motor can be
achieved in the diagnostic mode.
©2012 Viking Preferred Service
! WARNING

Fill Valve

The dishwasher uses a fill valve to fill the
machine with water. Verify as the valve is
energized 120 VAC is present between P6-3
and P10-1. If voltage is present and no water
enters, check the water supply and shut off
valve to make sure water is being supplied to
the unit. If water is present, unplug the wires
to the fill valve and using an ohmmeter, check
for approximately 1.1k Ω ohms at the coil. If
0 Ω ohms are read, replace the fill valve (see
Fill Valve Disassembly procedure, page 31).
P-5
Note: Testing the fill valve can be achieved in
the diagnostic mode.
Troubleshooting
P-6
P-10
P-6
P-10
37