Service Manual

COMPONENT TESTING
Whirlpool Smart All-In-One Washer & Dryer
n
3-17
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 #11: Supply Connecons—U.S.
This test assumes that proper voltage is present at the outlet,
and a visual inspecon indicates that the power cord is
securely fastened to the terminal block.
U.S. Installations:
1. Unplug washer/dryer or disconnect power.
2. Remove the terminal block cover from the back of the
washer/dryer. See gure 1.
3$*(
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
7. Using an ohmmeter, measure the
resistance across pins 1 and 2 of the
temperature sensor (on the heating element).
¾If the resistance is within the specified
range, the sensor is good; replace the
lower main harness.
¾If the resistance is open, replace the
temperature sensor.
8. If the preceding steps did not correct the
temperature sensor problem, replace the ACU.
¾Unplug washer/dryer or disconnect power.
¾Replace the ACU.
¾Reassemble all parts and panels.
¾Perform the Service Diagnostic Mode
Tests on page 5 to verify repair.
TEST #10: Dispenser System
Perform the following checks if the washer
will not dispense detergent or fabric softener.
1. Check water supply to washer. Check water
hose connections to and inside the washer.
2. Verify that dispenser drawer is not clogged
with detergent.
3. Unplug washer/dryer or disconnect power.
4. Remove the top panel to access the
dispenser.
5. Verify that the inlet valve is working
through TEST #5 on page 13. The water
is dispensed as follows:
¾Detergent Dispenser: Through main fill
and condenser valves.
¾Fabric Softener: Through main fill valve.
6. If detergent and fabric softener are not
dispensing:
¾Remove bulk dispenser reservoir and make
sure the two screens are in place at the
base of the container.
¾Remove bulk dispenser lid by removing
six screw cap covers and six screws.
¾Actuate each pump: Pump 1 (detergent
pump, J5 pins 1 and 2)—detergent should
dispense from the side bottom port; touch
the top of the pump and feel for vibration/
activation. Pump 2 (fabric softener pump,
J5 pins 3 and 4)—fabric softener should
dispense from the side top port; touch
the top of the pump and feel for vibration/
activation.
¾If valves are actuating, but nothing is being
dispensed, remove the bulk dispenser
assembly and check if hoses are kinked
or clogged.
TEST #11: Supply Connections
This test assumes that proper voltage is present
at the outlet, and a visual inspection indicates
that the power cord is securely fastened to the
terminal block.
U.S. Installations:
1. Unplug washer/dryer or disconnect power.
2. Remove the terminal block cover from the
back of the washer/dryer. See figure 9.
3. With an ohmmeter, check for continuity
between the neutral (N) terminal of the plug
and the center contact on the terminal block.
See figure 10a, page 17.
¾If there is no continuity, replace the power
cord and test the washer/dryer.
¾If there is continuity, go to step 4.
4. In a similar way, check which terminal
of the plug is connected to the top contact
on the terminal block and make a note of it.
This will be L1 in the wiring diagram. Follow
the same procedure for L2. See figure 10a,
page 17.
¾When this is found, go to step 5.
¾If neither of the plug terminals have
continuity with the top contact of the
terminal block, replace the power cord
and retest washer/dryer.
Figure 9 - Remove the cover plate.
Figure 1 - Remove the cover plate.
3. With an ohmmeter, check for connuity between the
neutral (N) terminal of the plug and the center contact on
the terminal block. See gure 2.
¾ If there is no connuity, replace the power cord and
test the washer/dryer.
¾ If there is connuity, go to step 4.
4. In a similar way, check which terminal of the plug is
connected to the top contact on the terminal block and
make a note of it. This will be L1 in the wiring diagram.
Follow the same procedure for L2. See gure 2.
¾ When this is found, go to step 5.
¾ If neither of the plug terminals have connuity with the
top contact of the terminal block, replace the power
cord and retest washer/dryer.
3$*(
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
5. Access the machine electronics without
disconnecting any wiring to the ACU.
6. Check for continuity between the L2
terminal of the plug and J1 on the ACU.
¾If there is continuity, go to step 7.
¾If there is no continuity, and the mechanical
connections of the wire are secure, check
for continuity at the IF – RFI. If there is no
continuity, replace the harness between the
ACU and the IF – RFI and the IF – RFI itself.
7. Visually check that ALL connectors are
fully inserted into the ACU.
8. Visually check that ALL connectors are
fully inserted into the HMI.
9. Reassemble all parts and panels.
10. Plug in washer/dryer or reconnect power.
11. Perform the Service Diagnostic Mode
Tests on page 5 to verify repair.
Canadian Installations:
1. Unplug washer/dryer or disconnect power.
2. Access the machine electronics without
disconnecting any wiring to the ACU.
3. With an ohmmeter, check the continuity
from L1 and L2 plug terminals of the power
cord to the terminals for L1 and L2 on the
ACU. See figure 10b.
Figure 10a - Plug-to-terminal connections
for electric dryer.
Power Cord
Plug
Terminal Block
&20
1
/
¾If continuity exists for both connections,
go to step 5.
¾If an open circuit is found, check the integrity
of the connections of the power cord to the
harness in the washer/dryer; harness to the
ACU; and the integrity of the power cord itself.
4. If it is necessary to replace the power
cord, remove the retaining clip that secures
the cord to the back panel. Disconnect the
cord from the main harness and the ground
wire from the rear panel, then pull out the
power cord.
5. Visually check that ALL connectors are
fully inserted into the ACU.
6. Visually check that ALL connectors are
fully inserted into the HMI.
7. Reassemble all parts and panels.
8. Plug in washer/dryer or reconnect power.
9. Perform the Service Diagnostic Mode
Tests on page 5 to verify repair.
Power Cord
Plug
ACU
Figure 10b - Plug-to-terminal connections
for electric dryer.
L1
COM
L2
L2
L1
Figure 2 - Plug-to-terminal connections for electric dryer.
5. Gently lay washer/dryer on its right side to access the
ACU. Remove AC shield and ACU cover. Access the
machine electronics without disconnecng any wiring to
the ACU.
6. Check for connuity between the L2 terminal of the plug
and J1 on the ACU.
¾ If there is connuity, go to step 7.
¾ If there is no connuity, and the mechanical
connecons of the wire are secure, check for connuity
at the IF – RFI. If there is no connuity, replace the
harness between the ACU and the IF – RFI and the IF –
RFI itself.
7. Visually check that ALL connectors are fully inserted into
the ACU.
8. Visually check that ALL connectors are fully inserted into
the HMI.
9. Reassemble all parts and panels.
10. Plug in washer/dryer or reconnect power.
11. Perform the Service Diagnosc Mode Tests on page 2-3 to
verify repair.
Connue to next page for Canadian Installaons . . .