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Diagnostics
© 2008 Viking Preferred Service
55
FIG D
shows the Convection Power relay (K5) activated.
In the wiring configuration shown here, the fan will run
at LOW speed and in a counterclockwise rotation.
If the fan motor is humming and barely turning, the
problem could be in the LOW speed 1.5 ufd capacitor,
a broken wire or a defective relay.
FIG E
shows the current flow for LOW speed. L1 Power
flows through the N.O. contact in the K5 relay
(energized) to the common terminal on the K6. The N.C.
contact on K6 is wired directly to the convection motor
(Blue wire). The power enters the HIGH speed capacitor.
On the other terminal there is a wire (orange) that connects
both capacitors. In the LOW speed fan position, K7 is not
energized. Therefore, the power flows into the LOW speed
capacitor on the Orange wire. The other end of the green wire
is connected to the N.O. contact of the Speed relay (K7). We
now have two capacitors in a SERIES circuit. Both capacitors
have a rating of 1.5 ufd giving a total of 3.0 ufd for LOW
speed operation.
The common terminal of K7 is internally wired on the
board to the N.O. contact of K6. K6 has a gray wire that runs
down to the convection fan motor as well. The K6 controls the
fans direction. If the LOW speed operation is not functioning
properly, run the Diagnostic program and check to see if HIGH
speed functions normally. If it does, then the Low speed
capacitor is possibly defective. If the capacitor checks
ok, then the K7 relay may be defective.
Also, try running the motor in both Low and High speed
reverse to see if the problem still exists. If the capacitors and
relays test ok, then replace the convection motor.
Convection fan motor operation continued on page 53.
Convection
Power Relay
K7 K6 K5
CAUTION
The convection circuit utilizes capacitors
in its operation which can store a charge
for long periods of time. Be sure to
discharge the capacitors before servicing
the convection components.
Содержание Designer DEDO530T
Страница 31: ...Diagnostics 2008 Viking Preferred Service 31...
Страница 32: ...Diagnostics 2008 Viking Preferred Service 32 Broil cycle chart TruConvec cycle chart...
Страница 33: ...Diagnostics 2008 Viking Preferred Service 33 NOTE Convection fan is running at LOW speed...
Страница 37: ...Diagnostics 2008 Viking Preferred Service 37...
Страница 67: ...Wiring and Schematics 2008 Viking Preferred Service 67 Wiring Diagram Select Model lower oven section...
Страница 68: ...Wiring and Schematics 2008 Viking Preferred Service 68 Wiring Diagram Premiere Model lower oven section...
Страница 71: ...Wiring and Schematics 2008 Viking Preferred Service 71...
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Страница 73: ...Wiring and Schematics 2008 Viking Preferred Service 73...