Question about Washing Machines
Wiring diagram inside controller not the motor
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Posted on Jan 02, 2017
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Aug 20, 2014 | Whirlpool Washing Machines
May 30, 2017 | Dishwashers
Dec 31, 2010 | Whirlpool Cabrio WTW6600SBT Top Load...
"Ld" (Washer is taking too long to drain
water from the wash tub)
Check the following:
Is the drain hose kinked or clogged?
Is the drain hose installed properly? See
"Connect the Drain Hose," page 2-5. Press
PAUSE/CANCEL to clear display
Is the drain hose clogged, or the end of
the drain hose more than 96? (244 cm)
above the floor?
See "Drain System," page 2-3.
6. To remove the drain pump: (there are 2 pumps... the drain pump is on the left)
a) Loosen the clamps and pull the inlet
and outlet drain hoses off the pump.
Note that there is a tab on the outlet
connector that fits into a slot in the
b) Remove the three 5/16? hex-head
screws from the drain pump and remove
the pump from the tub.
Check the pump inlet and the tub outlet for obstructions.
Pump electrical winding resistance test:
-Disconnect the wire connector from the
drain pump terminals.
- Set the ohmmeter to the R x 1 scale.
- Touch the ohmmeter test leads to each
of the drain pump terminals. The meter
should indicate between 10.5 and 14 ?.
----Due to the design of the machine the 2 wires going to the drain pump have be notorous for backing out of the plastic connector. Check the connector of the pump for loose terminal connections. --
From the Ld troubleshooting steps / procedure:
Ld flashes when the water level does not change after the drain pump is on.
• Is the drain hose or the drain pump clogged?
• Is the drain hose height greater than 96? ?
• Is the pressure hose connection from the tub to the machine/motor control pinched or plugged?
• Is the pump running? If not, see TEST #7.
TEST #7 Drain/Recirculation
Perform the following checks if washer fails to drain or recirculate.
1. See Activation of Manual Diagnostic Test
Mode, and perform the Manual: Pumps
2. Remove the console to access the machine/
motor control assembly. See Accessing
& Removing the Electronic Assemblies.
3. Visually check that the P4 connector is
inserted all the way into the machine/motor
If visual check passes, go to step 4.
If visual check fails, reconnect P4 and
repeat step 1.
4. Remove connector P4 from the machine/ motor control and check resistance values of pump motor windings. Resistance values should match those shown in wiring diagram, page 7-1.
If resistance values are good, go to step 7.
If winding measurements are much higher (tens of ohms to infinity) than shown in wiring diagram, a problem
exists in the motor winding or in the connection between the machine/motor
control and the motor. Go to step 5.
5. Tilt machine forward to access the bottom
of the machine and the pumps. See
Figure 1, page 6-13.
6. Check the resistance at the pump motor. Remove the connector at the motor and
take measurements across pump terminals. Measurements should be as shown in the wiring diagram.
If winding measurements are much higher (tens of ohms to infinity) than shown in wiring diagram, replace the
If the resistance at the pump motor is correct, there is an open circuit in the wiring between the motor and the machine/
motor control. Repair or replace the lower wiring harness.
If the pump motor windings and machine/ motor control check OK, repair or replace the pump. Be sure to check
the pump and tub sump for foreign objects before replacing pump.
7. See Activation of Manual Diagnostic Test Mode, and perform the Manual: Pumps test.
8. If the Manual: Pumps test failed, then the machine/motor control has failed:
Unplug the washer or disconnect power.Replace the machine/motor control assembly.
Perform the Manual: Pump test.
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