Roomba Troubleshooting: Error Codes and Charging Fixes

Error Codes and Voice Alerts on the Robot

A stopped Roomba identifies its own failure before you take anything apart. On 500 to 900, e, i, j, s, 100/1000, 200/2000, Plus 400/500, Max 700, and m series models, a red light ring illuminates and a voice narrates the specific issue. If you missed the announcement, press the power or CLEAN button to hear Roomba repeat the exact message. Wi-Fi connected models also push the alert directly to the iRobot HOME app.

Older models like the Roomba 800 series play a two-tone alert chime before speaking the error number. Modern units announce numbers corresponding to sensors, brush rollers, or bumper switches. You can find the model number printed on the underside of the robot near the left wheel to match the right series guide. Never guess the fault based on where the robot stopped in the room. The spoken number isolates the root cause directly.

Clearing an operational stoppage requires checking whether the issue involves physical debris or a sensor obstruction. Extractors, side wheels, and bumper panels trigger distinct warnings that shut down the cleaning cycle to protect internal motors. When the battery charge drops too low to run navigation routines, Roomba shuts down its cleaning head and issues an audio reminder to recharge on the dock.

Roomba Charging Error Codes and Electrical Contacts

Charging requires the battery, robot chassis, and dock contacts to function together without interruption. The iRobot charging error chart groups charging faults into battery detection, circuit current, temperature limits, and communication failures. On a charging fault, Roomba halts power transfer. It flashes its indicator and reports a Charging Error (CE) code.

Codes CE1 and CE101 indicate the robot cannot detect an installed battery, requiring you to remove and reinstall the pack. Codes CE4, CE5, CE104, CE105, CE21, and CE121 mean the dock or robot contacts cannot establish proper electrical current. You can resolve these contact codes by unplugging the dock and wiping the metal charging pads clean with a dry cloth. Temperature faults like CE6, CE7, CE106, and CE107 occur when a battery is too hot or cold, which requires letting the unit reach room temperature before retrying.

Communication and authenticity warnings like CE2, CE8, CE17, CE102, and CE117 flag unverified battery electronics or short-circuit risks. iRobot documentation states that aftermarket batteries may cause charging errors. They also void the warranty. For severe battery degradation codes like CE9, CE11, CE109, CE111, CE114, or repeated CE20 failures, explore Roomba battery replacement options using authentic packs, which iRobot lists from $99.99 to $169.99 at the time of writing.

Startup Failures When Roomba Will Not Turn On

An unresponsive Roomba usually means an open circuit, a dead battery, or dirty dock terminals. If the robot will not light up or respond to button presses, work through physical hardware checks in a strict sequence. Do not attempt unverified button combinations or unofficial reset rituals.

Unresponsive units often sit on depleted cells because the charging pads failed to make solid metal contact. Restoring power requires checking the dock power light, clearing oxidation on the charging contacts, and reseating the internal battery pack. Follow the listed recovery steps in order before assuming internal component failure.

• Check the dock's power light to ensure the charging base receives wall outlet power.
• Clean the metal charging contacts on both the underside of the robot and the dock base using a dry cloth.
• Power off the robot, remove the bottom cover screws, and remove and reinstall the battery to seat the connector tabs.
• Perform the 15-minute battery rest procedure from the CE20 protocol by leaving the pack unseated before reinstalling.
• Place the robot directly onto the charging pins manually and allow the battery to charge if deeply discharged.
• Review battery health indicators and obtain a genuine replacement pack if the robot stays unpowered.

Movement Errors and Jammed Roller Brushes

Mechanical drive faults occur when hair, carpet threads, or debris wrap around moving axles. Error numbers differ between generations; the two iRobot charts linked below cover the 800 series and the current 100 through Max 700 lines. On older units documented in the Roomba 800 series error messages chart, Error 1 indicates a wheel hanging down, Error 2 means extractors cannot turn, Error 5 or 7 indicates a jammed side wheel, and Error 9 points to a compressed bumper. Error 6 flags dirty cliff sensors or operation over dark surfaces that absorb infrared signals.

On newer platforms outlined in the iRobot general error message chart, code numbers follow an updated mapping. Error 2 indicates a main brush stall, Error 4 indicates a left wheel jam, and Error 5 indicates a right wheel jam. Error 6 indicates cliff sensor issues, Error 9 signals a stuck bumper, and Error 14 indicates a missing dust bin. Motor and navigation stalls report as Error 26 for vacuum motor airflow restrictions, Error 33 when the robot is trapped, and Error 48 when a physical path is blocked.

Advanced vision and mopping models report additional hardware states. Error 68 flags camera failure on Plus 500 models, while Error 69 indicates a localization error requiring adequate room lighting. Modern units report Error 1000 or 1001 for side brush stalls and Error 1025 for light detection and ranging (LiDAR) laser sensor abnormalities. Regular maintenance steps from our robot vacuum maintenance overview keep these drive assemblies turning freely.

Clean Base and Dock Communication Faults

Self-emptying Clean Base stations and mopping docks report their own diagnostic codes when evacuation or refilling fails. Dock errors 350 and 353 announce that the evacuation bag is missing or completely full. Error 365 signals that evacuation runs too frequently, instructing owners to check the dock and the robot bin for clogs.

Communication errors prevent the robot and dock from aligning properly during returns. Error 360 indicates a communication failure with an AutoWash dock, while Error 520 points to an Infrared Data Association (IrDA) communication failure that requires cleaning the infrared (IR) sensors. Errors 660 and 757 denote direct robot-to-dock communication loss. If docking fails consistently across cycles, inspect line-of-sight sensors and consult robot vacuum troubleshooting techniques.

Combo mopping docks introduce fluid management diagnostic codes. Errors 450 and 451 signal that the dock water tank is missing or running low, while Error 455 indicates internal pump failure. Docks with wastewater reclamation report Error 653 when the grey water tank is missing, Error 654 when the dirty water tank is full, and Error 513 for grey water pump issues. Basin overflow codes 517 and 672, pad actuator stalls 669 and 752, and missing fresh water tank warnings 671 require reseating mechanical dock trays.

Mapping Failures and App Setup Conflicts

Navigation problems often stem from outdated floor plans or missing cloud credentials rather than physical hardware breakdowns. Error 32 signals a map version mismatch between the onboard memory and the mobile application. In newer series, Error 1029 indicates an incompatible map, which iRobot resolves by deleting the current map in the app and running a fresh mapping run. When physical room layouts change dramatically, remap routines clear stale navigational paths.

Roomba units equipped with optical sensors require specific operational environments. Error 69 announces that localization failed due to inadequate ambient light, which you can fix by turning on room lights during cleaning schedules. In mopping units, Error 1026 marks a stuck mopping pad, while Error 1030 indicates the robot is stuck within a designated No Mop Zone.

Software and account validation also throw dedicated operational codes. Error 29 warns that a software update was interrupted or that the robot attempted to start while downloading firmware. Error 266 indicates a subscription or account setup requirement where the robot must be registered and configured inside the mobile app. The iRobot limited warranty excludes ISP interruptions and weak Wi-Fi signals.

Service Boundaries and the iRobot Limited Warranty

Some error states cannot be repaired at home. Error 47 indicates an invalid calibration state requiring a remote sensor update or direct assistance from iRobot technical support. Similarly, internal battery failures like CE114, CE3 or CE103 that persists after retrying, and any liquid damage, need iRobot service. For complex physical repairs, review Roomba repair. Authorized centers are listed under robot repair services.

The iRobot limited warranty covers defects in materials and workmanship for one year from the date of purchase or delivery. To file a claim, you must provide the robot serial number and original proof of purchase from an authorized dealer. The iRobot remedy includes repair, exchange with a functionally equivalent unit manufactured from new or serviceable parts, or an upgraded model at their option.

Warranty protection excludes normal wear and tear, including battery capacity loss over time. Claims will be rejected for liquid or water damage, short-circuited batteries, broken battery seals, and failure caused by non-genuine replacement parts or cleaning solutions. Transporting the robot in inadequate packaging or using units with defaced serial numbers also invalidates coverage.