Whirlpool WFC8090GX - Test #7: Drain;Recirculation Pump

COMPONENT TESTING
Whirlpool Smart All-In-One Washer & Dryer
n
3-11
L1
ACU
DRAIN/RECIRCULATION PUMP
J1-2
ACU
J6-2
J4-5
DRAIN PUMP
P
1
2
L2
J1-1
RECIRCULATION PUMP
J22-1
J22-2
P
1
2
RFI-L
RFI-N
Lorem ipsum
For Service Technician Use Only
TEST #7: Drain/Recirculaon Pump
Perform the following checks if washer/dryer does not drain.
1. Check for obstrucons in the usual areas. Clean and then
perform step 2.
2. Check the pump and electrical connecons by performing
the Service Diagnosc Mode Tests on page 2-3. The following
procedures assume that this step was unsuccessful.
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 J4, J6, and/or J22 connector is
inserted all the way into the ACU.
¾ If visual check passes, go to step 6.
¾ If connectors are not inserted properly, reconnect J4,
J6, and/or J22 and repeat step 2.
6. Drain Pump: Remove connectors J4 and J6 from the ACU.
With an ohmmeter, measure the resistance across J4, pin
5 and J6, pin 2. (Connue to step 7.)
Recirculaon Pump: Remove connector J22 from the
ACU. With an ohmmeter, measure the resistance across
J22, pin 1 and J22, pin 2. (Connue to step 7.)
7. Resistance should be: Drain Pump (45–65 Ω) and
Recirculaon Pump (150–190 Ω) when at room temperature.
¾ If the reading is innite (open), go to step 8.
¾ If the reading is correct, go to step 12.
8. Remove the rear panel to access drain & recirculaon
pump. Verify that pump, pump lter, drain hose, and air
trap are free from obstrucons.
9. Visually check the electrical connecons at the drain and
recirculaon pumps.
¾ If visual check passes, go to step 10.
¾ If connecons are loose, reconnect the electrical
connecons and repeat step 2.
10. With an ohmmeter, check harness for connuity between
the pump assembly and ACU.
¾ If there is connuity, go to step 11.
¾ If there is no connuity, replace the lower machine
harness and repeat step 2.
11. With an ohmmeter, measure the resistance across the
two drain and recirculaon pump terminals. Resistance
should be: Drain Pump (45–65 Ω) and Recirculaon Pump
(150–190 Ω).
¾ If the reading is far out of range or open, replace the
pump assembly.
¾ If the reading is correct, go to step 12.
12. If the preceding steps did not correct the drain or
recirculaon 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 Diagnosc Mode Tests on page 2-3
to verify repair.
DRAIN/RECIRCULATION PUMP
Figure 1 - Drain/Recirculation Pump
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.
Figure 2 - Drain/Recirculation Pump Strip Circuit
45-65 W
Drain Filter
Drain
Pump
Recirculaon
Pump
150-190 W