Hall Sensor - GE Profile Harmony WPGT9360 Technical Service Manual

Hall Sensor

• The Hall effect sensor measures the motor rpm.
• Four wires connect the Hall sensor to the
inverter board at the 4-pin dark blue connector.
(See
Inverter and Main Board Pin Connectors.
• The Hall sensor measures approximately
9K Ω between the brown and blue wires and the
brown and red wires.
• If the sensor has failed, the motor will not
operate.
• The Hall sensor is part of the stator assembly. It
is not available as a separate part.
To check the Hall sensor voltage at the inverter:
• Disconnect the Hall sensor plug from the
inverter board. Check voltage on pins 3 (brown)
and 4 (yellow) on the inverter board. There
should be approximately 12 VDC. If not, the
inverter board is faulty.
Inverter Board
To check voltage at the Hall sensor:
• Measure between pins 1 (blue) and 4 (yellow)
and pins 2 (red) and 4 (yellow) with the Hall
sensor plugged into the inverter board. Rotate
the spin basket by hand. There should be
12-VDC pulses as the basket is rotated. If pulses
are present, the Hall sensor is good.
To remove the rotor and stator:
WARNING: The rotor is not grounded. Unplug the
washer before servicing to avoid electrical shock.
1. To access the motor, the washer must be placed
on its side. Place a towel or blanket on the
)
fl oor to prevent scratches to the surface of the
washer.
2. Remove the 24-mm (
rotor nut with a socket or open end Crescent
wrench. (Rotate rotor nut counterclockwise to
remove.)
Note: Use a rubber mallet if needed to tap the
wrench to break the nut free.
Rotor
Rotor Nut
3. Pull the rotor away from the drive shaft.
4. Remove the six 10-mm hex-head screws that
hold the stator in place.
Note: Removal of the wiring guard (held in place by
one 10-mm hex-head screw) gives better access to
the motor connector.
Stator
– 38 –
/ in. SAE equivalent)
15
16
Bottom View
Wiring Guard
(Continued Next Page)