Service Manual
3-16
n
Whirlpool Smart All-In-One Washer & Dryer
COMPONENT TESTING
For Service Technician Use Only
TEST #10b: Dispenser Metering Pumps
Perform the following checks if the washer will not dispense
detergent or fabric soener.
1. Check water supply to washer. Check water hose
connecons to and inside the washer.
2. Verify that bulk dispenser reservoir is not clogged with
detergent or fabric soener.
3. Remove bulk container and make sure the two lters are
in place at the base of the reservoir.
4. Check the relays and electrical connecons to the dosing
pumps by performing the Service Diagnosc Mode Tests
on page 2-3. The following steps assume the detergent
and/or fabric soener pump did not turn on.
5. Unplug washer/dryer or disconnect power.
6. Remove bulk container. Remove bulk dispenser lid by
removing six screw cap covers and six screws.
7. Remove the top panel to access the dispenser system
8. Plug in washer/dryer or reconnect power.
9. Actuate each metering pump by performing the Service
Diagnosc Mode Tests on page 2-3.
Pump 1 (detergent pump)—detergent should dispense
from the side boom port; touch the top of the pump and
feel for vibraon/acvaon.
Pump 2 (fabric soener pump)—fabric soener should
dispense from the side top port; touch the top of the
pump and feel for vibraon/acvaon.
¾ If pumps are actuang, but nothing is being dispensed,
remove the bulk dispenser assembly and check if hoses
are kinked or clogged.
¾ If pumps are not actuang, go to step 10.
10. With a voltmeter set to AC, aach the leads across the
pins of the suspect pump. Run the Service Diagnosc
Mode Tests and check for line voltage across the pins of
the pump. NOTE: Refer to the Service Diagnosc Mode
Tests on page 2-3 to determine when the detergent and
fabric soener pumps are actuated.
¾ If line voltage is present and pump sll does not
acvate, replace metering pump assembly.
¾ If line voltage is not present, replace the ACU.
11. Unplug washer/dryer or disconnect power.
12. Reassemble all parts and panels.
13. Perform the Service Diagnosc Mode Tests on page 2-3 to
verify repairs.
Bulk Dispensing System & Metering Pumps
Figure 3 - Detergent & Fabric Softener Metering Pumps Strip Circuit
METERING PUMPS
L1
ACU
DISPENSER DOSING PUMPS
J1-2
ACU
J5-2
J5-1
DETERGENT PUMP
P
2
1
L2
J1-1
FABRIC SOFTENER PUMP
J5-3
J5-4
P
1
2
RFI-L
RFI-N
Inlet Valve
Soener Pump
Detergent Pump
Water Inlet Hose
Bulk
Reservoir
Figures 1 & 2 - Bulk
Dispensing System &
Metering Pumps
Pump Hose
Roung
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.