Likely cause is the water valve. What happens is the water valve will stop letting cold water into the washer; therefore, once the washer gets to rinse it will either stop or not do anything during the whole rinse cycle.
This is because when you selected your water temperature, you may have selected warm/cold or hot/cold. The hot water came in and you didn't notice any problems. When it got to rinse, the cold water the cold water won't come in. Therefore, the washer does nothing.
The item to check would be your water inlet valve. Check it for continuity with a multi meter it should show Ohms or a closed circuit. To test it when water is overflowing unplug the unit and see if it still overflows or continues to fill. If it stops when unplugged. Then it is not a water inlet problem but an electrical signal problem going to ur water inlet valve. Possibly from the panel or board. You can also do a live volt test to see if it is getting the full 120 current, but be sure to unplug unit before testing as this is a live test.
Another test u can do to check the water inlet valve, first cut the water off and remove the hoses off the back of the washer. Then one at a time point the hoses inside the washer tub and turn the water back on. If you don't have good water pressure, turn the water back off and remove the strainer that should be in one end of the hose. Inspect the strainer to see if it is stopped up, clean it and reinstall it. Now repeat this test. If you have good water pressure now, reinstall hose and your problem is fixed.
If you still don't have good water pressure, the problem is in your house plumbing and you need to call a plumber. If you had good water pressure the first time you performed the test, the water valve is bad and needs replacing.
TIMER
If your washer doesn't go through the washer rinse cycle the timer may be the problem. Sometimes the timer gets stuck in the middle of the cycle or won't turn at all. If the washer runs, but the timer doesn't turn, the timer is bad and needs replacing.
Do you have anti-flood hoses leading to the machine. If you do there is probably a loose tube in the back causing a small leak. When the hoses detect that water is still flowing after a certain amount of time due to the leak it shuts down and causes the machine to turn off during the rinse/spin cycle
SOURCE: LG WFT1022TP top loader washing machine
the system which controls water level is an air chamber with a small diameter pipe which goes to a pressure stat. when the correct level is reached, the pressure in the air chamber switches the pressure stat and cuts the water off. the things to look for are: gunge in the air chamber split in the pipe. faulty pressure stat to test, get a similiar length of small diameter pipe and connect it to the pressure stat instead. with the machine filling, blow gently into the pipe and see if the water intake cuts off
SOURCE: lg tromm wm2277wh washing machine
Is the water valve screens plugged restricting the amount of water going into the washer other wise your pressure switch is reading the wrong water level.
SOURCE: lg wm2277hw washing machine
sorry to say it but i think you still have a faulty hall sensor.
Try another one and send the last one back as being faulty.
It means the motor gets the power but the hall sensor stops it dead in its track
SOURCE: banging pipes when washing machine fills
it is called water hammer and is difficult to cure. try turning tap off halfway. another cure but difficult and not 100% is to take the copper feed pipe round in a circle
SOURCE: Humming sound washer won't spin
It sounds like you have a hall sensor failure, if your machine fills with water and then does the buzz thing without the drum ever moving in the cycle.
The Hall sensor (part number 6501KW2001A) has failed. The hall sensor is rather easy to replace, and is covered by a seven year part warranty (in the US). Take the back cover off. Take the big nut off and remove the motor rotor. Remove the bolts holding the motor windings. Remove the electric plug on the sensor and unclip it from the motor winding. Snap new sensor on and reassemble. Usually takes under a half hour. On a difficulty scale of 1 - 10, it might rate a 4. This should be a Fix-Ya for your machine, and at basically no cost!
In the US, find a service provider using your zip code at http://us.lgservice.com/index_b2c.jsp or call LG at 800-243-0000
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