ROBOFAULTS
EUFY·FAULT ERR 9 WARN

eufy Error 9 — Magnetic boundary strip detected

Severity: Warning — robot won't start on or next to a boundary strip and waits to be moved G30 EdgeX8LR/L35
Last verified: 2026-07-06 Tools: none Time: ~3 min Difficulty: easy

DIRECT ANSWER

Error 9 means the robot detected a magnetic boundary strip right under or beside it. Move the robot to a different area, away from strips and other strong magnets, and restart the clean.
#meaning · #causes · #fix — link straight to any section

COMMON CAUSES · RANKED

1

Robot started on top of a strip MOST COMMON

Starting a mission while parked on the boundary strip blocks the robot immediately — the official fix is simply to relocate it.

2

Strip laid across the robot's only route

A strip across a doorway the robot must pass strands it against the barrier on every mission — reroute the strip.

3

Another magnet source nearby RARE

Speaker magnets and magnetic door stops against the chassis can read like a boundary strip.

HOW TO FIX IT

No battery or electrical work involved in this fix.

Move the robot away from the strip

Set it down on open floor at least half a metre from any boundary strip and restart.

Reroute the strip if it repeats

Lay strips so the robot meets them side-on during cleaning and never has to start a mission on top of one.

Check for stray magnets

If there is no strip nearby, look for magnetic door stops, speakers or toys along the robot's path.

Sources

Verification

OFFICIAL SOURCE

Last verified: 2026-07-06 · How we verify a fault code

Corrections

Spotted an error? Report a correction — fixes ship within 48h and are logged on this page.