The F51 fault code on these types of washers indicates that the
machine control board detects an RPS (Rotor Position Sensor) failure.
This sensor is on the motor at the bottom of the washer.
Here is the troubleshooting for the F51 fault code:
- Do not overload the washer. Overloading can cause this fault code.
underneath the washer for any clothes or toys that could be under the
washer and obstructing the motor from turning freely. This can occur
because there is not a cover on the bottom of the Washer.
- Using too little water by choosing the wrong cycle for the type of load being washed can cause this fault code.
sure that your drain hose is properly installed per your installation
instructions. Siphoning of fill water out of the washer can cause tub
resistance and will result in this fault code.
- Lift the lid and
reach in and make sure that the basket turns freely. If not, you could
have garments stuck between the two baskets or a problem with the
basket hub. Any abnormal resistance to tub movement can cause this
- Unplug the washer. Make sure that both
the Control Board Connectors P5 (Motor Wires, red, blue and yellow),
and the P10 (RPM Sensor Wires, 7 brown wires) are securely plugged into
the Control Board.
- Remove the (P5) Motor Connector from the
Control Board and take a resistance reading between the 3 combinations
of motor wires (red/blue, red/yellow and blue/yellow). It should read
around 32 ohms on the Motor Windings between any of the 3 pins on the
harness. NOTE: If you do not get the proper resistance reading on the
motor harness at the board, check the reading at the motor end. If you
get a good reading replace the upper or Lower Harness whichever is
defective. If the reading is still bad when checked directly off of the
motor, then you will need to replace the motor. (See notes below for
- Unplug the P10 connector and take a resistance
reading between the two outside pins (1 and 7). It should read between
600 and 21.6K ohms. *NOTE: (If it reads open you will need to pull the
Rotor and Stator so you can check it right at the RPS Sensor. If it
reads good at the sensor replace the Lower, or Upper Harness whichever
- To access the motor and RPS sensor, lean the washer
back against the wall. Secure the washer with blocks if needed. Remove
the rotor (1-bolt), and the stator (4-bolts). When you pull the rotor
off, check to make sure that the thin plastic beads that run between
each magnet on the rotor is intact and in place. This could cause an
F51 code as it will no longer separate the poles of the magnet for the
sensor to read them properly.
- Check your wiring connections on
the motor and the RPS sensor. Unplug and then plug the wiring harness
connections back in on these components 5 or 6 times. This will
normally scrape through any possible corrosion or deposits on the
connections. Tug slightly on the connections when they are inserted for
the final time to make sure that they are secure.
- Reassemble the washer .
Hope this helps .