Appliance Defect

EcoVacs Deebot N79 Robot Vacuums: Malfunction, 4 Beeps and It Will Never Start Again

EcoVacs Robot Vacuums are advertised to “provide[ ] a versatile, everyday cleaning solution.”

Despite their high price tag, however, EcoVacs Robot Vacuums experience various malfunctions (including main brush malfunction, sensor malfunction, and battery malfunction) and/or failure. Although EcoVacs is well-aware of these issues through consumer complaints and warranty coverage requests, it still has not done anything to provide a long-term solution. Worst of all, any attempts to fix these issues or seek warranty coverage fail or involve additional costs.

Indeed, once these costly vacuums–particularly the N79–experience what consumers now refer to as the “4 Beeps” or “Beeps of Death,” kiss your innovative robot vacuum goodbye. That’s because EcoVacs refuses to repair the N79 vacuums that experience a “main brush malfunction”–the error identified by the 4 beeps–once the one year warranty has expired. Moreover, consumers who want to repair their vacuums at their expense find they cannot because EcoVacs has yet to establish service centers in the United states.

As a result, after a little more than one year of use, consumers can expect their EcoVacs N79 vacuums to become little more than a piece of home decor that will beep 4 times and refuse to start. Consumers report the following about their EcoVacs Robot Vacuums:

“Within 3 months, the sensor stopped working so it ran into everything. It’s a little over a year old, it runs for about 10 minutes and then stops. It says main brush malfunction. We have changed the brushes, cleaned the motor, replaced the battery, and nothing seems to work. We have a few friends who also have this vacuum and they have sensor issues as well. Now I have to find a replacement. Update: We ended up ordering a new battery as suggested from YouTube videos but that didn’t work. I ordered a new motor off aliexpress and it worked. The vacuum was back to functioning for several months. Unfortunately, now there’s another issue. It keeps saying drop sensor malfunction or malfunction: please check to see if deebot is powered on…as it beeps and does nothing. I’m so over this vacuum.” – EcoVacs DEEBOT N79S Purchaser

“I bought this a little over a year ago and it sits on the charger and beeps. I called customer service twice first time I was told to clean the main brush. I did that and it did not fix the problem. The second time I called I was told to do the same thing it took for ever to get them to understand I already did it then I was told I needed a new battery guess what that didn’t work either. I did some internet research and found out this seems to be a common problem.” – EcoVacs DEEBOT N79S Purchaser

“Do NOT buy this vacuum! We have had it 1 1/2 years and it has totally crapped out on us. It worked nice, but shouldn’t it be usable for more than 1 1/2 years? Don’t buy it. If I had the chance again, I’d go with one where you can find reviews from people who have used it for more than 2-3 years. We have no pets in the home. We have our house cleaned by professional cleaners once a month. This little guy was used to keep things clean between the monthly clean up. We have two area rugs and the rest is linoleum. I am EXTREMELY disappointed about the quality and workmanship of this vacuum. You get what you pay for I guess.” – EcoVacs DEEBOT N79S Purchaser

“I bought this in april, 2018 and it worked great up until now (September 2019). It keeps giving a 4 beep alarm which according to the manual indicates a main brush malfunction. I replaced it, called the phone number for ecovacs customer service, followed all the troubleshooting advice and then finally emailed them tonight. Despite it only being 1.5 years old, they had no further tips for me to fix this and basically said too bad. I’m not happy at all that I spent over $200 for it to last 1.5 years and for the company not to seem to care at all. I would never buy from this company again based on this experience.” – EcoVacs DEEBOT N79S Purchaser

If you have been let down by your EcoVacs N79 Robot Vacuum due to malfunction (including main brush malfunction, sensor malfunction, or battery malfunction) and/or failure–particularly when accompanied by 4 beeps–and EcoVacs has refused to repair or replace your Robot Vacuum, it may be time to visit an attorney. While there is currently no action to reimburse consumers for EcoVacs’ failings, Cafferty Clobes Meriwether & Sprengel LLP is currently investigating the issue, and would be welcome to speak with you about any potential claims you may have.


September 17, 2021