Whirlpool WFC8090GX, Service Manual, Page: 44 / 82

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Whirlpool Smart All-In-One Washer & Dryer
COMPONENT TESTING
For Service Technician Use Only
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Failure to do so can result in death or
electrical shock.
Replace all parts and panels before operating.
TEST #10a: Dispenser Sensing
Bulk Dispenser Container not Detected
Perform the following checks if the washer cannot detect the
presence of the container in the dispenser assembly.
1. Verify that the bulk dispenser container is fully seated in
the dispenser cavity on the top of the washer/dryer. Close
the bulk dispenser lid.
¾
If container is not detected, go to step 2.
¾
If container is detected, go to step 8.
2. Open dispenser lid and remove bulk dispenser container.
Verify that magnet is in place under the container (see
Figure 1).
¾
If magnet is present, go to step 3.
¾
If magnet is not present, replace the bulk dispenser
container assembly.
3. Unplug washer/dryer or disconnect power.
4. Gently lay washer/dryer on its right side to access the
ACU. Remove AC shield and ACU cover.
5. Visually check that the J11 connector is inserted all the
way into the ACU.
DISPENSER SENSING
Figure 2 - Detergent Sensing Strip Circuit
¾
If visual check passes, go to step 6.
¾
If connector is not inserted properly, reconnect J11 and
verify that the container is detected.
6. Disconnect J11 from ACU. Using an ohmmeter, connect
leads across pins 1 and 2 of J11. With the bulk container
removed, the reed switch should read open.
Detergent
Reservior
Softener
Reservior
Cartridge
Magnet
Figure 1 - Dispenser Container Bottom View
7. Next, place a magnet in the center of the floor of the bulk
dispenser cavity, near the approximately location of the
magnet location in Figure 1. The magnet should close the
reed switch (less than 3 ohms).
¾
If the resistance still reads open, replace the entire bulk
dispenser assembly. (Other than the container, the
dispenser assembly is not serviceable.)
¾
If the preceding steps did not correct the problem,
replace the ACU.
8. Unplug washer/dryer or disconnect power.
9. Reassemble all parts and panels.
10. Perform the Service Diagnostic Mode Tests on page 2-3 to
verify repairs.
Continue to next page for “Detergent/Softener not Detected”...
ACU
ACU
J11-2
J12-4
J12-1
J12-2
+5 VDC
J12-3
J11-1
+5 VDC
+5 VDC
Container Position Out
Detergent Level Out
Softener Level Out
CONTAINER POSITION SW
G
DETERGENT LEVEL SW
SOFTENER LEVEL SW
B
W