EUFY·FAULT ERR 21 WARN

eufy Error 21 — Charging base blocked

Q: eufy Error 21 — Charging base blocked

Error 21 means the charging base or auto-empty station is blocked by obstacles. Clear the space around it — eufy recommends 1 m free each side and 2 m in front — and let the robot dock again.

Severity: Warning — robot can't line up with its base or station until the approach is cleared G30/G40X8LR/L35

Last verified: 2026-07-06 Tools: none Time: ~5 min Difficulty: easy

DIRECT ANSWER

Error 21 means the charging base or auto-empty station is blocked by obstacles. Clear the space around it — eufy recommends 1 m free each side and 2 m in front — and let the robot dock again.

#meaning · #causes · #fix · #parts — link straight to any section

COMMON CAUSES · RANKED

Objects crowding the base MOST COMMON

Shoes, cables and furniture within the clearance zone break the robot's docking approach path.

Base tucked into a corner or under furniture

eufy's placement guidance wants the base against a wall on open, hard floor — recessed spots hide its signal.

Base shifting on the floor UNCOMMON

A base that slides when the robot docks ends up angled — eufy ships stickers to fix it to the floor.

HOW TO FIX IT

No battery or electrical work involved in this fix.

Clear the docking zone

Remove obstacles within about 1 m to each side and 2 m in front of the base or station.

Reposition the base properly

Set it flat against a wall on hard floor, not carpet, away from dark objects, and fix it with the floor stickers if it shifts.

Send the robot home again

Place the robot within 2 m of the base facing it and press the home button to test the docking run.

Did this fix your robot?

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COMPATIBLE PARTS

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Charging base — RoboVac & G series

11S11S Max15C15C Max25C30C30C MaxG30G30 EdgeG30 Hybrid

The base's white indicator must light when powered — eufy's charging guide replaces the base when a robot gives no beep or light after docking on clean pins.

Compatibility and replacement details → Check price on Amazon ↗

Sources

Verification

OFFICIAL SOURCE

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

Corrections

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