Ecovacs Deebot OZMO 930Ecovacs Error 4Ecovacs Error 4 — cause and how to fix it
Error code: Ecovacs Error 4
Ecovacs Error 4 on the OZMO 930 typically means a cliff sensor issue.
How to fix Deebot OZMO 930 Ecovacs Error 4
- 1
These sensors, located on the bottom of the robot, get dirty easily or can fail entirely, making the robot think it's always at an edge.
- 2
Try cleaning all four cliff sensors with a dry cloth or cotton swab.
- 3
If the error persists, you'll likely need to replace the faulty cliff sensor board.
- 4
They're usually sold as individual boards for about $10-20 each.
What this repair uses
Ecovacs Deebot OZMO 930 cliff sensor board
Take it out, clean it, and seat it again before you replace it. If the error stays, this is the part to change.
Frequently asked questions
What does Ecovacs Deebot OZMO 930 Ecovacs Error 4 mean?
Ecovacs Error 4 on the OZMO 930 typically means a cliff sensor issue.
Is this a hard repair to do myself?
Most of the steps above take 20-40 minutes with basic tools like a screwdriver. If you'd rather not open the unit yourself, contact the official support line below instead.
What part do I need?
You'll need a Ecovacs Deebot OZMO 930 cliff sensor board. Compatible aftermarket parts are widely available on AliExpress and typically cost $8-60 depending on the part.
How do I contact Ecovacs support?
Ecovacs Korea offers pickup repair service — they collect the unit from your home. Warranty is 1 year from purchase. Phone: 1588-8416
Official support
Ecovacs Korea offers pickup repair service — they collect the unit from your home. Warranty is 1 year from purchase.
Online support
Open support page →