Tag Archives: LG

How to replace the Hall Sensor in an LG front-loading washer

So, you tested the Hall Sensor in your LG washer and determined that it’s toast. Now the big questions: 1) Where to get the new sensor? and 2) How to install it?

1. Where to get the new Hall Sensor?

Right here, of course! With fast shipping and a 365-day return policy, the choice of part vendor is clear! Part Link ==> Hall Sensor.

2. How to install the new Hall Sensor?

I’ll let Master john63 from the Samurai School of Appliantology explain that:

1. Unplug washer

2. Remove the rear access panel (4 phillips screws)

3. Remove the large 17mm bolt at the center of the ROTOR
Pull off the ROTOR (has magnetic tension)

4. At the bottom of the STATOR ASSY (Motor Coil) remove the phillips screw on the
metal wire harness-plate. This will allow slack when removing the STATOR ASSY.

5. Remove all of the 10mm bolts from the STATOR ASSY.
Carefully lower the STATOR ASSY & disconnect the HALL EFFECT SENSOR plug.

6. Unclip the *single* tab of the HALL EFFECT SENSOR to remove it from the STATOR.

7. Install new HALL EFFECT SENSOR—verify that all 4 snap/lock tabs are securely
attached to the STATOR ASSY.

8. Re-assembly in reverse order.

To learn more about your washing machine, or to order parts, click here.

How to test the Hall Sensor in an LG front-loading washer

A common symptom of a bad Hall Sensor in your LG washer is the LE error code (read more). A disconnected or damaged motor harness and even a bad main control board can cause the LE error, too, so you may want to check the Hall Sensor itself to see if it’s working. Here are two ways to test the Hall Sensor in an LG front-loading washer.

Ohm Testing the Hall Sensor

Start with an ohms test because it’s easy. But be aware that an ohms test is not conclusive– it’s merely preliminary. The Hall Sensor (and any other electrical component for that matter) can test good on ohms but still be bad because it can fail under load (when voltage is applied). That’s why ohms testing is just preliminary: if it fails the ohms test, it’s bad; replace the Hall Sensor (same for all LG models).

OTOH, if it passes the ohms test, this does not prove the Hall Sensor is good– you have to go on to the voltage test to prove that.

Wiring Harness And Resistance Checks On The Hall Sensor In An LG Washer

If tested off the stator using the diagram above, ohm check the resistors from pin 5 to pin 1 and pin 2. If the hall sensor is good, you should measure approximately 10 KΩ from pin 5 to pin 1 and 10 KΩ from pin 5 to pin 2. If either test shows an open (infinity) the Hall Sensor is defective and must be replaced.

Part link for the Hall Sensor (standardized for all LG models; includes a video showing how to replace it) ==> Hall Sensor

Voltage Testing Hall Sensor at Stator

Motor And Hall Sensor Wiring In An LG Washer

If measuring voltage from the control board to the Hall Sensor, follow the following steps:
1. Unplug the power cord.

2. Remove the rear washer panel.

3. Locate the Hall sensor connector on the stator behind the rotor.

4. Place the meter leads on terminals 5 to 4,white to gray.

5. Plug in the power cord,close the door,and press the power button. DO NOT PRESS START!

6. You should measure 10 to 15VDC. If 10 to 15VDC is present,the control board is OK! If not, replace the control board (look up the correct board using your model number).

7. To measure output signal voltage from the Hall Sensor, carefully move test leads to terminals 4 (gray) to 1 (blue). Slowly rotate the motor rotor by hand. You should read a pulsing 10 VDC. If 10VDC is measured from 4 to 1, move the lead on the blue wire to the red wire, terminal 2. Repeat rotating motor rotor by hand. You should read a pulsing 10 VDC.

8. If pulsing 10VDC is measured from pin 4 to pin 1 and pin 4 to pin 2, the hall sensor is OK! If either test netted only 9 to 10 VDC without changing (no pulsing) the hall sensor is likely defective; replace the Hall Sensor (same for all LG models).

To learn more about your washing machine, or to order parts, click here.