Sears Elite 665.12779K310 - Lower Spray Arm Motor

5-18
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Kenmore Elite 2013 Stainless Steel Tall Tub Dishwasher
TESTING
For Service Technician Use Only
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.
Lower Spray Arm Motor
This test will check the wiring to the spray arm motor and the
motor itself. The following items are part of the lower spray
arm motor circuit.
■ Harness/Connecon
■ Lower Spray Arm Motor
■ Lower Spray Arm Sensor
■ Control Board
Test Procedure
1. Check for and remove anything blocking the lower spray
arm (utensils, pot handles, etc). Verify that the lters are
installed properly and not impeding spray arm rotaon.
Also, check for clogged spray nozzles and clean as needed.
2. Perform the Service Diagnosc Cycle to check status of
lower spray arm and sensor. The following operaons are
performed during “Interval 10” (4 minute lower wash).
Minute 1: LSA Rotates CCW
Minute 2: LSA Rotates CW
Minute 3: LSA Rotates CCW
¾ Clean LED lit to indicate LSA motor status good.
Minute 4: LSA Rotates CW
¾ Clean LED lit to indicate LSA sensor status good.
The following steps assume that this step was unsuccessful.
3. Are all the loads controlled by TRIACS not working?
Strip Circuit – Lower Spray Arm Motor
¾ YES – check for open door switch, TRIAC fuse, or pilot relay.
¾ NO – just the spray arm motor. Go to step 4.
4. Unplug dishwasher or disconnect power.
5. Remove outer door panel to access control board.
6. Unplug connector P8 from control board.
7. Check the spray arm motor—using an ohmmeter, verify
the resistance values as shown below.
Motor Harness Windings (ohms)
P8, Pins 3 & 6 1890-2310 ohms
P8, Pins 3 & 1 1890-2310 ohms
¾ If the values are within the ranges listed, the spray arm
motor and harness are good. Go to step 8.
¾ If outside the range or inconsistent from winding to
winding, replace the spray arm motor (diverter assembly).
¾ If an open circuit is detected, check connecons and
harness connuity between control and spray arm motor.
If good, replace the spray arm motor (diverter assembly).
8. Reconnect P8 to control board.
9. Plug in dishwasher or reconnect power.
10. With a voltmeter set to AC, connect black probe to P8-6
(N) and the red probe to P8-3 (L1). Start the Diagnosc
Cycle and at “Interval 10” (4 minute lower wash) check for
AC to the CCW motor winding during minutes 1 and 3.
IMPORTANT: The Lower Spray Arm Motor must be connected
to the control board to measure voltage accurately!!!
¾ If 120V AC is measured during CCW rotaon (minutes 1
& 3), go to step 11.
¾ If no AC voltage is measured, replace the control board
and retest.
11. With a voltmeter set to AC, connect black probe to P8-1
(N) and the red probe to P8-3 (L1). Start the Diagnosc
Cycle and at “Interval 10” (4 minute lower wash) check for
AC to the CW motor winding during minutes 2 and 4.
IMPORTANT: The Lower Spray Arm Motor must be connected
to the control board to measure voltage accurately!!!
¾ If 120V AC is measured during CW rotaon (minutes 2
& 4), go to step 12.
¾ If no AC voltage is measured, replace the control board
and retest.
12. Perform Diagnosc Cycle to verify repair.
¾ If lower spray arm error sll exists, perform lower spray
arm sensor test procedure on following page.
13. Unplug dishwasher or disconnect power.
14. Reassemble all parts and panels.
15. Plug in dishwasher or reconnect power.