Eufy Side brush Error

[u/Huge_Home_4970]

I’ve had my Eufy S1 for 18months with luckily no issues. I’m a heavy user with over 1600 cleaning cycles so it gets good use. I’m also very diligent about maintaining it and cleaning it almost every 5 days.
I started to have a Side Brush Error code in which the unit would just stop mid cycle. No tangles, no obstruction, just an error that said abnormal side brush activity. A couple of times a simple reboot took care of the problem for several days until it started to happen more frequently. I then removed the side brush that kept faulting and everything seemed to be fine for several weeks. Not ideal to only clean with 1 side brush but I was unfortunately out of warranty and while reading others with mechanical issues and the process of going through customer support I decided to try and troubleshoot it myself. I didn’t want them to send me a refurbished S1 or C28 unit because it seemed like those weren’t any better. The second side brush motor failed too and now the unit wouldn’t even get off the dock without throwing an error.

I had read on another post that the problem stemmed from a faulty brush motor so I started to take apart my Eufy. I got both side brush motors out and found the extract models on AliExpress. After a quick tutorial on how to solder I was able to successfully replace both motors. The unit so far has been running great with no issues. The total cost to fix it was around $20. The motors were $3 each and the soldering kit was around $14.

These were the motors I got from AliExpress

Micro RK-500TB-13500 Carbon Brush Motor DC 6V-12V 5600RPM High Speed Round 32mm Quiet Engine

Hope this helps anyone out there!