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Samsung WF1124XAC 3E Error Code Stopping Mid-Cycle


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I'm having problems with the above code. It seems to stop mid-cycle on any program but can't isolate the problem. I've checked all connections and nothing is obvious.

Just before it stops the drum will turn a little bit each way and makes a noise which I imagine brings up the code due to too much current being drawn.

I've noticed a slight noise coming from the motor so I'm unsure if there's a problem there. The bearings seem fine as it spins freely with no noise.

I've attached a short video of the noise of the motor.

 

Thank you.

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Samsung washing machine manual says error 3E = "Motor Tacho Error, incorrect tacho signal will produce this error". Essentially this usually means that the motor is not turning because the tacho coil measures the revolutions of the motor. Obviously the causes can be many. For a better understanding of the tacho coil read this article, which although is not for a Samsung washing machine all tacho coils work exactly the same - tacho coil error

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A poor connection to the tacho coil or broken copper wire inside one of the wires. However the latter can only really happen to a wire that’s been under some stress by being strongly bent or pulled. 
 

Usually this fault means that the wash cycle software believes it has sent power to the motor and can’t detect any fault in the motor yet it is not receiving any signals from the tacho coil. 

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It’s possible for the fault to be on the PCB or the wires leading from tachometer coil to PCB but I would definitely not buy a PCB speculatively. Everything about the tachometer coil is in the link I put in my first reply. 

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Sorry it should have been brushless motor.

I've attached a short video of it struggling again it did it for around a half minute towards the end of the rinse cycle then did nothing for a few minutes before finishing the cycle with no error code.

Sorry for so many questions.

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Hi. Sorry I forgot to mention that brushless motors don’t have tachometer coils. However, the error code says tacho coil error, which goes to show how unhelpful the codes often are.

If a brushless motor is running laboured and struggling with no power then unless you can find a poor connection to it on the motor plug or motor wiring there’s nothing you can do. It could need a new motor or new PCB but they are way to expensive to gamble trying one. 

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Warning:  Read this before attempting any diy repairsNo representations or warranties are made (express or implied) as to the reliability, accuracy or completeness of advice. I can't be held liable for any loss arising directly or indirectly from the use of, or any action taken in reliance on, any information on this website, which is given free of charge and in good faith.

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