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ROOMBA·FAULT CHG 3 CRITICAL

Roomba Charging Error 3 — Charging system fault

Severity: Critical — internal charger fault — often ends in service or replacement 600eijs
Last verified: 2026-07-05 Tools: none Time: ~15 min Difficulty: moderate

DIRECT ANSWER

Charging error 3 means the robot's internal charging system isn't working properly. Try a reboot and a battery reseat, but be realistic — iRobot flags this one as a charger fault that often means service or replacement.
#meaning · #causes · #fix · #models — link straight to any section

COMMON CAUSES · RANKED

1

Charging circuit failure MOST COMMON

The charging electronics on the robot's mainboard have developed a fault.

2

Transient charging glitch UNCOMMON

Occasionally a reboot and battery reseat clear the error for good — worth trying before anything drastic.

HOW TO FIX IT

SAFETY · READ THIS FIRST

Power off and remove the battery before working in the battery bay, and never charge a robot that smells hot or burnt.

Reboot the robot

Hold CLEAN until the robot restarts, then try charging again.

Reseat the battery

Power off, remove the battery for ten seconds, reinstall it, and dock the robot.

Clean both contact sets

Wipe the charging contacts on robot and dock with lightly dampened melamine foam, and let them dry.

Contact iRobot Customer Care

If charging error 3 remains, the charger hardware has failed — this is a warranty or service case, not a DIY part swap.

MODELS AFFECTED

Model Status Firmware Parts Verified
Roomba 614 limited 600 Parts → 2026-07-05 · Source
Roomba 675 limited 600 Parts → 2026-07-05 · Source
Roomba 690 limited 600 Parts → 2026-07-05 · Source
Roomba 694 limited 600 Parts → 2026-07-05 · Source
Roomba e5 / e6 limited e Parts → 2026-07-05 · Source
Roomba i1 / i1+ limited i Parts → 2026-07-05 · Source
Roomba i3 / i3+ limited i Parts → 2026-07-05 · Source
Roomba i4 / i4+ limited i Parts → 2026-07-05 · Source
Roomba i6 / i6+ limited i Parts → 2026-07-05 · Source
Roomba i7 / i7+ limited i Parts → 2026-07-05 · Source
Roomba i8 / i8+ limited i Parts → 2026-07-05 · Source
Roomba j7 / j7+ limited j Parts → 2026-07-05 · Source
Roomba j9 / j9+ active j Parts → 2026-07-05 · Source
Roomba s9 / s9+ limited s Parts → 2026-07-05 · Source
Roomba Combo j7+ limited j Parts → 2026-07-05 · Source
Roomba Combo j9+ active j Parts → 2026-07-05 · Source

Models resolved from the series chips above. Support status comes from our EOL library; rows link to the matching parts and firmware pages.

Sources

Verification

OFFICIAL SOURCE

Last verified: 2026-07-05 · How we verify a fault code

Corrections

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