Test #6: Drain Pump - Whirlpool WETLV27HW0 Service Manual

TESTING – WASHER
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 #6: Drain Pump

If visual check passes, go to step 6.
Perform the following checks if washer does not drain.
If connector is not inserted properly,
NOTE: Refer to Figure 1, "Drain Pump Strip Circuit" for tests
and measurements.
reconnect J2 and repeat step 2.
IMPORTANT: Drain water from tub before accessing bottom of
washer.
1. Check for obstructions in the usual areas. Clean and then
perform step 2.
2. Check the drain pump and electrical connections by
performing the Drain Test under Manual Test Mode on
page 2-11. The following steps assume that this step was
unsuccessful.
3. Unplug washer/dryer or disconnect power.
4. Remove console to access main control.
5. Visually check that the J2 connector is inserted all the way
into the main control.
¾ If visual check passes, go to step 6.
If values are open or out of range,
¾ If connector is not inserted properly, reconnect J2 and
repeat step 2.
check lower harness connector, pin 7 & 6.
6. Remove connector J2 from main control. With an
If values are still open or out of range, go
ohmmeter, verify resistance values shown below across
the following J2 connector pinouts:
to step 7.
If values are correct, go to step 11.
DRAIN PUMP
N
Main Control
K2
J5-2
Drain Pump Motor Relay
3-14 27" Stacked Laundry Center
n
For Service Technician Use Only
J2 Connector Pinout
J2, 2 & 3
Drain Pump Motor
Pin 7
J2-3 Pin 1
Motor Resistance 14 to 25 ohms
Figure 6 - Drain Pump Strip Circuit
control. See chart below.
Main Control to Drain Pump
Drain pump Pin 1 to lower harness connector Pin 7 to main control J2-3
Drain pump Pin 2 to lower harness connector Pin 6 to main control J2-2
If there is continuity, go to step 10.
Component
If there is no continuity, replace the lower
Drain Pump
or upper washer harness (depending on
Resistance should be 14–25 Ω.
where the issue was) and repeat step 2.
¾ If values are open or out of range, check lower harness
connector, pin 7 & 6. If values are still open or out of
10. With an ohmmeter, measure the resistance
range, go to step 7.
¾ If values are correct, go to step 11.
across the two pump terminals. Resistance
7. Tilt washer/dryer back to access drain pump. Verify pump
should be 14–25 .
is free from obstructions.
8. Visually check the electrical connections at the drain
If values are open or out of range, replace
pump.
¾ If visual check passes, go to step 9. the pump motor.
¾ If connections are loose, reconnect the electrical
connections and repeat step 2.
If the resistance at the pump motor is
9. With an ohmmeter, check harness for continuity between
correct, go to step 11.
the drain pump and main control. See chart below.
11. If there is a stuck pump, check for a Main Control to Drain Pump
Drain pump Pin 1 to lower harness connector Pin 7 to main control J2-3
blown board. If the board has a blown R69
Drain pump Pin 2 to lower harness connector Pin 6 to main control J2-2
surge resistor, check for stuck or shorted
¾ If there is continuity, go to step 10.
pump motor; if OK, check all other loads
¾ If there is no continuity, replace the lower or upper
washer harness (depending on where the issue was)
with input to the board.
and repeat step 2.
10. With an ohmmeter, measure the resistance across the two
12. If the preceding steps did not correct the
pump terminals. Resistance should be 14–25 Ω.
drain problem, replace the main control.
¾ If values are open or out of range, replace the pump
motor.
a. Unplug washer/dryer or disconnect power.
¾ If the resistance at the pump motor is correct, go to
step 11.
b. Replace the main control.
11. If there is a stuck pump, check for a blown board. If the
board has a blown R69 surge resistor, check for stuck or
c. Reassemble all parts and panels.
shorted pump motor; if OK, check all other loads with
input to the board.
d. Plug in washer/dryer or reconnect power.
12. If the preceding steps did not correct the drain problem,
Calibrate washer and perform Automatic Test
replace the main control.
a. Unplug washer/dryer or disconnect power.
to verify repair.
b. Replace the main control.
c. Reassemble all parts and panels.
d. Plug in washer/dryer or reconnect power. Calibrate
washer and perform Automatic Test to verify repair.
Pin 6
Pin 2
120VAC
Motor
Figure 1
J2 Connector Pinout
J2, 2 & 3
Main Control
K4
J2-2 J5-1
Main Relay
L1