Ecovacs Deebot Error 111: Why Is the Bumper Stuck and How Do I Fix It?

Problem Description

The ECOVACS Home app shows Error 111 (Bump sensor stuck). The front bumper is compressed and can't spring back, so Deebot thinks it is permanently pressed against a wall and stops. On a brand-new robot, the factory protective strip is a common cause.

Why This Happens in Real Homes

Error 111 is Deebot's front bumper reporting it's stuck in the pressed-in position, so the robot behaves as though it's permanently jammed against a wall. On a new robot the number-one cause is the clear factory protective strip left around the bumper - it holds the bumper compressed and trips the error on the very first run.

On an in-use robot, dust, hair, or a stray cord packed into the seam behind the bumper stops it springing back. Tap the bumper firmly, clean the gap and slots, and confirm it rebounds evenly on both sides. A bumper that moves freely but still throws Error 111 has a failing bump sensor and needs Ecovacs service.

Symptoms

• ECOVACS Home app shows Error 111
• Voice says the bumper is stuck
• Front bumper looks pushed in
• Robot bumps walls harder than usual
• Deebot thinks it is always hitting something
• Bumper doesn't spring back when pressed
• Robot stops right after starting
• Error 111 on a brand-new robot

Recognize these? Here's what usually causes it.

Common Causes

• Factory protective strip still on the bumper (new robot)
• Dust and grit packed behind the bumper
• The bumper physically stuck compressed
• A cord or object wedged under the bumper
• Hair jammed in the bumper travel slots
• Sticky residue binding the bumper
• Bumper knocked out of alignment
• Bump sensor switch obstructed

Tools & Requirements

Step-by-Step Solution

1

Check for the Factory Strip

If Error 111 appears on a brand-new Deebot, look for the clear plastic protective strip around the front bumper from the box. Peel it off completely - a strip left on holds the bumper compressed and is the top cause of Error 111 out of the box.

2

Find the Bumper

The bumper is the wide movable band across the front of the robot. It floats on springs and pushes in when Deebot touches a wall. Error 111 means it is stuck pressed-in or blocked.

3

Tap It Firmly

Press and release the bumper several times, then tap firmly across its whole width. This shakes grit out of the slide mechanism so the bumper can spring back on its own.

4

Check It Springs Back

Push the bumper straight in and let go. It should snap back out evenly on both sides. If one side stays pressed in, something is jamming it.

Still stuck? Ask Trunetto about this exact issue.

Ask Trunetto

5

Clean the Bumper Gap

Run a dry cloth or a card along the thin seam between the bumper and the body, and pick hair out of the slots with tweezers. Packed dust and hair in this gap stop the bumper moving.

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6

Clear Trapped Objects

Look under and behind the bumper for a cord, thread, or rug tassel wedged in that limits its travel, and pull it out.

7

Wipe Sticky Edges

If the robot rolled through something sticky, residue can glue the bumper. Wipe the edges and the seam with a barely-damp cloth and dry them so it slides freely.

8

Restart and Watch

Press AUTO and watch the first wall contact - the bumper should compress and rebound. If Error 111 returns with a clean, freely-moving bumper, the bump sensor may be faulty - contact Ecovacs.

Quick Solutions

Still having issues? This is usually the deeper cause below.

Need More Help? Ecovacs Support

Note: The contact information below connects you directly to Ecovacs's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.