I have been battling with 3E error for years on and off. I changed the control board but it was not the problem. I changed the door lock switch that was not the problem either. Everytime I run the spin test and it runs with no error code then I can wash a load without an error code. Finally I took out the heater and the thermostat sensor, soaked and cleaned them in vinegar, that seem to solve the problem for me for now. But I also noticed sometimes that when the wash gets down to 3 minutes and the drum is ready to go in high spin, it just fail and try to again and again, til it succeed. My problem with 3E seems to me that my motor doesn't sometimes have enough power to spin the drum with heavier loads.
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=== Update (11/08/2022) ===
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Also 3E error could be that the motor is getting hot, and it is weak to initiate the drum to turn. Let it cool off for few minutes, hit pause then start and it should continue the wash normally.
I have been battling with 3E error for years on and off. I changed the control board but it was not the problem. I changed the door lock switch that was not the problem either. Everytime I run the spin test and it runs with no error code then I can wash a load without an error code. Finally I took out the heater and the thermostat sensor, soaked and cleaned them in vinegar, that seem to solve the problem for me for now. But I also noticed sometimes that when the wash gets down to 3 minutes and the drum is ready to go in high spin, it just fail and try to again and again, til it succeed. My problem with 3E seems to me that my motor doesn't sometimes have enough power to spin the drum with heavier loads.