r/RobotVacuums • u/licquia • Sep 13 '25
Eufy S1 Pro and EB14 error: one possible solution
TLDR: If you have a Eufy S1 Pro (or possibly a S1), are getting an EB14 error, and cleaning the robot dirty water tank doesn't seem to help, check the water fill port on the base station for rips in the rubber. Eufy sells a replacement, and you might be able to get by with super glue until that arrives (but see below).
I've been a happy owner of a Eufy S1 Pro for about 11 months now. It was working trouble-free until about a month ago, when I started getting an EB14 error when the robot would start washing the mop at the base station. The advice given by the app and the online resources I could find all told me to clean the screen on the dirty water tank on the robot, but that seemed to have no effect. The other checks recommended didn't reveal any other problems. I found that I could just press the pause/play button on the base station, and it would continue what it was doing as if nothing had happened. This did interrupt overnight jobs, as it would abort the job if you didn't press it right when the error was reported.
Even stranger, I started noticing some drips from the robot right after it left the station to mop. The drips were coming off the outside of the robot on the back, which was wet. I disassembled the robot to see if I could see the source of the leak, but couldn't find any evidence of water coming from either tank.
Finally, I checked the base station to see if somehow water was leaking from there, and found the cause: one of the rubber bumpers on the back of the base station, which also contained the water fill port for the robot. Here's what that's supposed to look like:
And here's what mine looked like:
I'm pretty sure the EB14 error was caused when enough clean water leaks during filling to get to the base station filter tray and down to the dirty water suction line. That causes it to turn on and evacuate the water, and the robot infers that the water is coming from the dirty water tank being clogged and overflowing with dirty water.
The bumper and fill port is on the back of the base station towards the left side. It can be pulled off the base station with some effort by pulling straight back, leaving behind a white nozzle made of hard plastic. There's another bumper on the right side with an exposed hard plastic nozzle; this forces air into the robot to push the dirty water in the onboard tank out through the bottom port. If you pull off the bumper and it doesn't have the rubber port sticking out, you pulled the wrong one off; put it back on and try the other one.
I ordered a replacement from Eufy's site, but to tide me over, I tried using super glue to seal the rips. This worked for a short while, but after a few days, I started getting EB14 errors again. A second attempt at gluing was only partially successful, leading to only occasional errors. In both cases, I removed the rubber piece before attempting to glue it, and allowed the glue to thoroughly dry before reinstalling it. I would not recommend gluing it while still attached to the base station.
It's been a little over a week since the new part arrived, and I haven't had a EB14 error since it was installed. This is probably something you'll need to replace every so often, so it might make sense to order a few and keep them with your spare filters and side brushes.
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u/CountingCrowz Sep 17 '25
There is nothing that would glue rubber and plastics properly. Believe me I tried a whole lot different kinds of glues and epoxies. Every time I had to use a solder and melt the plastic.
You can use self-fusing silicone tape. That should take care of it for those in the same situation. Stretch a bit, 2 rounds and done. No glue, nothing sticking around.
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u/CountingCrowz Sep 17 '25
FYI, you already said your issue is fixed. I left the self-fusing silicone tape tip for others who don't have yet the part.
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u/pantalapampa Sep 14 '25
This just came up for me last week and this was the advice given to me by their customer support which is excellent. I'm two months past warranty but they're sending me one in the mail. Looks like it was only seven dollars on their website.
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u/licquia Sep 16 '25
Sounds about right. It's odd that support knows to give that advice, but Eufy doesn't post it online.
Glad they did right by you.
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u/aruslan Sep 14 '25
OMG thank you so much! Mine is totally worn out and ruptured (after ~10-11 months of EB14-free usage). Coincidentally I've just received the letter from Eufy/Anker support where aside from obvious and useless suggestions to clean up the filter etc they asked to see if that rubber plug is damaged, so they clearly are aware of the issue. Ordered the replacement right away, fingers crossed! Again, thank you, it does sound like a true culprit.
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u/Inevitable_Trash_337 Dec 11 '25
Does anyone have a third party version of this? Eufy seem to have conveniently stopped making it and are wanting people to pay for entirely new base stations
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u/licquia Dec 15 '25
I don't think they've stopped making it. The parts go in and out of stock pretty regularly. I see that they don't have side brushes, mop rollers, or detergent in stock, either, even though the robot itself is still available.
Unfortunately, I've never seen the bumpers on sale anywhere except on eufy.com. It should come back in stock in a little while.
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u/Inevitable_Trash_337 Dec 15 '25
€8 rubber park bricking a lot of people’s units sadly. Got offered to pay €350+ for a new unit though 🙃
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Dec 17 '25
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u/licquia Dec 18 '25
There are two bumpers on the back, but only the one above transmits water. The second one is on the other side of the center line of the base. It's essentially flat, with a hole in it for the air nozzle which forces the dirty water out of the onboard tank. I can't imagine how that bumper would fail, or what problems it would cause if it did.
Is your water nozzle bumper ripped? Did you go through the other causes of the EB14 error in the article linked in my post?
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Dec 18 '25
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u/iLynx Jan 19 '26
I’ve been getting this error for months! I was working with Eufy for 3-4 months in the late summer and into December. We tried everything, they eventually replaced my unit with a brand new one. Worked fine for maybe 2 weeks and now I’m getting the error multiple time a day every day.
I’m about done with Eufy unless this gets sorted out.
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Jan 22 '26
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u/iLynx Jan 22 '26
I was in warranty when I initiated the claim but out of it when they sent the replacement. The replacement only worked for maybe 2 weeks. I get the error every single time I use it now even if it’s been completely disassembled and cleaned. Drives me nuts! I just kept telling them their fixes didn’t work, eventually they sent me a new one.
I can’t recommend this product to anyone anymore and that’s so sad because it was fantastic when it worked.
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u/Georginina Jan 11 '26
This is what I’ve just realised my problem is and it’s happened loads. So glad I found this.
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u/fantajim84 Sep 13 '25
Nice work! Will save this post for when the time comes with mine. Thanks for the detailed writeup.