Test #10A: Dispenser Sensing - Whirlpool WFC8090GX Service Manual

COMPONENT TESTING
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or
electrical shock.

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
ACU
3-14 Whirlpool Smart All-In-One Washer & Dryer
n
For Service Technician Use Only
G
+5 VDC J11-1
CONTAINER POSITION SW
B
+5 VDC J12-2
DETERGENT LEVEL SW
W
+5 VDC J12-4
SOFTENER LEVEL SW
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.
Softener
Reservior
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"...
J11-2
J12-1
J12-3
Cartridge
Magnet
Detergent
Reservior
ACU
Container Position Out
Detergent Level Out
Softener Level Out