Vent Fan - KitchenAid KUDE20FB*0 Technical Education

DANGER
Electrical Shock Hazard
Only authorized technicians should perform
diagnostic voltage measurements.
After performing voltage measurements,
disconnect power before servicing.
Failure to follow these instructions can result in
death or electrical shock.

Vent Fan

This test will check the wiring to the vent and the vent fan
itself. The following items are part of the vent fan circuit.
■ Harness/Connection
■ Vent Fan
■ Control Board
NOTES:
Only dishwashers with the ProDry™ option have a vent and
fan. If moisture is detected between outer and inner door
panels or on cabinets around air inlet located on side of door
panel, check that the vent damper is closing properly using the
Service Diagnostic Cycle.
Also verify that wax motor seal and vent bezel seal are not
pinched or missing. Verify there are no leaks around the vent
bezel seal allowing moisture past the bezel and into the door
panel area.
Strip Circuit – Vent Fan
For Service Technician Use Only
Test Procedure
1. Check the vent fan and electrical connections by
performing the Service Diagnostic Cycle. The following
steps assume that this step was unsuccessful.
2. Unplug dishwasher or disconnect power.
3. Remove outer door panel to access control board.
4. Unplug connector P10 from control board.
5. Check the resistance of the fan motor coil. With a
ohmmeter, connect the black lead to P10-6 and the red
lead to P10-5. IMPORTANT: Note measurement polarity.
¾ If the resistance is between 31-41 k-ohms, the fan
motor and harness are good. Go to step 6.
¾ If outside the range, replace the fan motor.
¾ If an open circuit is detected, check connections and
harness continuity between control and fan motor. If
good, replace the fan motor assembly.
6. Reconnect P10 to control board.
7. With a voltmeter set to DC, connect the black lead to
P10-6 and the red lead to P10-5. IMPORTANT: Note
measurement polarity.
8. Plug in dishwasher or reconnect power.
9. Check for DC voltage from the Control. Start the
Diagnostic Cycle and at the proper interval measure for
+5V DC out of the control between P10 pins 5 & 6.
¾ If +5V DC is measured and fan is running, go to step 10.
¾ If no voltage is measured, replace the control board
and retest.
10. Unplug dishwasher or disconnect power.
11. Reassemble all parts and panels.
12. Plug in dishwasher or reconnect power.
KitchenAid 2013 Stainless Steel Tall Tub Dishwasher
TESTING
6-17
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