F51 error code is a motor rotor position sensor failure or a lower harness problem. You need to check the motor in manual test mode, not automatic test mode. This will check the hall sensors and do a spin test: Be sure the washer is in standby mode (plugged in with all indicators off; or with only the Clothes Clean or Done indicator on). Select any one button (except POWER, START, STOP, and PAUSE/CANCEL) and follow the steps below, using the same button: Press/hold 3 seconds. Release for 3 seconds. Press/hold 3 seconds. Release for 3 seconds. Press/hold 3 seconds.
If this test mode has been entered successfully, all indicators on the console are illuminated for 5 seconds with 88 showing in the Estimated Time Remaining two-digit display. During the 5 second wait time with 88 showing in the display, press the same button once. You should be in manual test mode. If the button is not pressed within 5 seconds, the automatic test mode begins. The Rotor Position Sensor uses Wash, Rinse, and Spin indicators to detect the three hall sensors. Console can have up to two of these indicators on at the same time when the tub is not moving. Open the lid and rotate the basket by hand. The Wash, Rinse, and Spin indicators should toggle on and off according to the direction the tub is being turned.
SPIN TEST: Make sure lid is down. Press and release: 2nd RINSE or EXTRA RINSE. The lid locks and the lid lock indicator turns on. Press and release; SPIN SPEED, WATER LEVEL, or LOAD SIZE. The motor/basket spins at 23 rpm. Press again, motor /basket spins at 530 rpm. Press again, motor/basket spins at 950 rpm. Press again and motor turns off.
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