Question about Whirlpool Cabrio WTW6600SBT Top Load Washer
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Posted on Jan 02, 2017
Posted on Dec 10, 2008
F then 51 flashes when there is a motor rotor position sensor (RPS) failure. See TEST #3
Motor RPS Failure
here is what test 3 is... good luck...
TEST #3 Motor Circuit
This test checks the wiring to the motor and rotor position sensor; and the motor and rotor position sensor themselves. NOTE: Drain water from tub.
1. See Activation of Manual Diagnostic Test Mode, and check the motor and electrical connections by performing the Agitate and Spin tests under Manual: Motor. The following steps assumes that this stepfailed.
2. Unplug washer or disconnect power.
3. Check to see if basket will turn freely. If basket turns freely, go to step 4. If basket does not turn freely, determine what is causing the mechanical
friction or lock up.
4. Remove the console to access the machine/ motor control assembly. See Accessing& Removing the Electronic Assemblies.
5. Visually check that the P5 and P10 connectors are inserted all the way into the machine/motor control. If visual checks pass, go to step 6.
If visual checks fail, reconnect P5 and P10 and repeat step 1.
6. With an ohmmeter, check for 16 ohms resistance at the P5 connector between pins P5-1 and P5-2, and also between pins P5-1 and P5-3. Also measure the resistance at the P10 connector between pins P10-1 and P10-7 and verify that the resistance is within the range shown in the wiring diagram on page 7-1.
If the resistance is correct, go to step 11. If the P5 connector resistance is much higher than 16 ohms, or the P10 connector resistance is out of range, go to
7. Tilt machine forward to access the bottom of the machine and the drive motor area. See Figure 1 on page 6-13. Remove the motor bolt, then the motor cover to access the motor connections. See Figure 2 on page 6-13.
8. Visually check the mounting bracket and electrical connections to the motor and rotor position sensor board. If visual check passes, go to step 9.
If visual check fails, reconnect the electrical connections, reassemble stator and motor cover and repeat step 1.
9. With an ohmmeter, check for continuity between all pins on the P10 machine/motor control connector and the motor rotor position sensor (RPS) connector. See Figures 2 and 4, pages 6-13 and 6-16. If there is continuity, go to step 11. If there is no continuity, replace the lower machine harness.
10. With an ohmmeter, check for continuity between all pins on the P5 machine/motor control connector and the drive motor connector. If there is continuity, replace the drive motor. If there is no continuity, replace the lower machine harness.
11. The drive motor and lower harness are good. Replace the motor RPS board and perform the Diagnostics test in step 1 to verify repair.
12. If the Diagnostics motor test in step 1 failed, then the machine/motor control has failed: Unplug the washer or disconnect power. Replace the machine/motor control assembly. Perform the Motor Diagnostics in step 1 to verify repair.
Posted on Apr 28, 2009
SOURCE: Washer stops and F 51 flashs
Hello, It is a rotor position sensor code. The control is no longer receiving
a signal from the motor. It can be a failed sensor or control, but
usually it is a bad connection where the wires plug on to the sensor.
Posted on Jun 11, 2010
The F51 error is a RPS (rotary position sensor) board failure where the control board looses contact with the RPS during the machines operation. The RPS uses hall effect sensors to determine the speed and direction of the drive motor, allowing the control board to constantly monitor the motors operation. Because this error is a communication error and not a mechanical error with the motor itself (that would be and F52 error) we can limit our trouble shooting to the three items that make up the RPS circuit, the control board, the wiring harness, and the RPS itself.
Posted on Apr 09, 2011
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