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 soener.
1. Check water supply to washer. Check water hose
connecons to and inside the washer.
2. Verify that bulk dispenser reservoir is not clogged with
detergent or fabric soener.
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 connecons to the dosing
pumps by performing the Service Diagnosc Mode Tests
on page 2-3. The following steps assume the detergent
and/or fabric soener 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
Diagnosc Mode Tests on page 2-3.
Pump 1 (detergent pump)—detergent should dispense
from the side boom port; touch the top of the pump and
feel for vibraon/acvaon.
Pump 2 (fabric soener pump)—fabric soener should
dispense from the side top port; touch the top of the
pump and feel for vibraon/acvaon.
¾ If pumps are actuang, but nothing is being dispensed,
remove the bulk dispenser assembly and check if hoses
are kinked or clogged.
¾ If pumps are not actuang, go to step 10.
10. With a voltmeter set to AC, aach the leads across the
pins of the suspect pump. Run the Service Diagnosc
Mode Tests and check for line voltage across the pins of
the pump. NOTE: Refer to the Service Diagnosc Mode
Tests on page 2-3 to determine when the detergent and
fabric soener pumps are actuated.
¾ If line voltage is present and pump sll does not
acvate, 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 Diagnosc 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
Soener Pump
Detergent Pump
Water Inlet Hose
Bulk
Reservoir
Figures 1 & 2 - Bulk
Dispensing System &
Metering Pumps
Pump Hose
Roung
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.