Roomba i4

Model number: i415020 / i455020

Also known as: Roomba i4, iRobot Roomba i4, iRobot Roomba i4 / i4+ Wi-Fi Robot Vacuum — i Series — i415020 / i455020, i415020 / i455020

category

Wi-Fi robot vacuum

cleanBase

Clean Base mentioned/compatible; plus variant includes Clean Base when documented.

manualFile

Roomba_i4_Repair_Manual(1).pdf

navigation

Imprint Smart Mapping via floor-tracking sensors

modelNumbers

i415020 / i455020

coveredModels

iRobot Roomba i4 / i4+ Wi-Fi Robot Vacuum — i Series — i415020 / i455020

errorCoverage

Operating errors Error 1, 2, 5, 6, 7, 9, 10, 14 and Charging Errors 1, 2, 3, 5, 6, 7, 8, 9, 10.

productFamily

i Series

runtimeMinutes

90

• iRobot Roomba i4 Repair Manual

• Roomba i4 Battery Not Detected

  On the dock or charger the robot reports the battery isn't detected / connected and won't charge.

• Roomba i4 Stuck / Wheel

  Robot stops, sounds the two-tone error, beeps once, and asks to be moved to a new location. Often near edges, thresholds, or after the robot climbs onto something.

• Roomba i4 Bumper

  Robot beeps nine times / reports a bumper fault; thinks it is permanently bumping something and won't drive forward.

• Roomba i4 Extractors

  Robot stops, beeps twice / says to remove and clean the extractors. The Dual Multi-Surface rubber extractors may be stalled or struggling to turn.

• Roomba i4 Side Wheel

  Robot beeps five times / reports a wheel fault and won't drive properly.

• Roomba i4 Weak Suction

  Robot runs normally but picks up poorly, leaves visible debris, or seems weak.

• Roomba i4 Noise

  Robot is noticeably louder than usual — grinding, rattling or buzzing.

• Roomba i4 Clean Base

  The Clean Base runs but the robot bin still has debris afterward, the base is louder/weaker than usual, or fine dust blows around the dock.

• Roomba i4 Navigation

  The robot wanders, repeats areas, cleans in random directions instead of neat rows, can't finish, or won't build/keep a Smart Map. The Clean Map looks broken or it returns to start without finishing.

• Roomba i4 Bin

  Robot beeps once and reports the bin is missing, even when the bin appears to be in place.

• Roomba i4 Worn Battery

  Robot reports charging error 8, 9 or 10; battery won't charge or won't hold charge.

• Roomba i4 Drive Wheel

  Robot reports a drive fault; one wheel does not turn, robot spins or goes nowhere.

• Charging Error 9

  Robot reports charging error 8, 9 or 10; battery won't charge or won't hold charge.

• Error 10

  Robot reports a drive fault; one wheel does not turn, robot spins or goes nowhere.

• Charging Error 5

  Most common charging fault: robot reports charging error 5; charging is intermittent or won't start; base light may flicker.

• Charging Error 10

  Robot reports charging error 8, 9 or 10; battery won't charge or won't hold charge.

• Error 2

  Robot stops, beeps twice / says to remove and clean the extractors. The Dual Multi-Surface rubber extractors may be stalled or struggling to turn.

• Charging Error 6

  Robot reports charging error 6 (too hot) or 7 (too hot/cold) and pauses charging.

• Charging Error 3

  Robot reports charging error 2 or 3 and will not charge normally.

• Charging Error 1

  On the dock or charger the robot reports the battery isn't detected / connected and won't charge.

• Error 5

  Robot beeps five times / reports a wheel fault and won't drive properly.

• Error 6

  Robot beeps six times, reports a cliff/drop, backs up and refuses to continue — even on flat floor, or it won't cross a dark rug.

• Error 7

  Robot beeps seven times / reports a wheel problem; may turn in place or refuse to move.

• Error 1

  Robot stops, sounds the two-tone error, beeps once, and asks to be moved to a new location. Often near edges, thresholds, or after the robot climbs onto something.

• FM-06: Roomba i4 Error 9 — Bumper compressed / stuck

  Symptom: Robot beeps nine times / reports a bumper fault; thinks it is permanently bumping something and won't drive forward. Likely root causes: The front bumper is stuck pressed-in (debris in the seam); Dust/hair packed behind the bumper preventing it from springing out; Bumper physically jammed against the body Next steps if owner-level checks fail: Bumper won't spring back or Error 9 persists — bumper sensor/mechanism service; contact iRobot Customer Care 1-877-855-8593

• FM-16: Roomba i4 Short runtime / dies before finishing

  Symptom: Robot used to run an hour-plus but now quits early, or returns to dock (or dies) after a short time. Likely root causes: Aging lithium-ion battery losing capacity (most common over time); Heavy carpet load drawing more power; Clogged High-Efficiency filter / debris on the extractors making the motor work harder; Battery never fully charging (dirty contacts — see FM-11); Counterfeit battery with overstated capacity Next steps if owner-level checks fail: Brand-new genuine battery still gives short runtime — charging circuit or motor draw issue; contact iRobot Customer Care 1-877-855-8593

• FM-03: Roomba i4 Error 5 — Side wheel stuck

  Symptom: Robot beeps five times / reports a wheel fault and won't drive properly. Likely root causes: A drive (side) wheel is jammed by hair or debris; Wheel can't extend/retract on its spring; Object lodged between wheel and housing; Wheel encoder fouled by dust Next steps if owner-level checks fail: Wheel still binds or one wheel won't turn under power — drive module likely needs replacement/service; contact iRobot Customer Care 1-877-855-8593

• FM-21: Roomba i4 Virtual Wall or Keep Out Zone ignored

  Symptom: The robot drives through a doorway or into a zone a Dual Mode Virtual Wall — or an in-app Keep Out Zone — is supposed to block, or the barrier seems to do nothing. Likely root causes: Weak or dead AA batteries in the Virtual Wall (most common); Virtual Wall switched off, or set to the wrong mode (Linear vs Halo); Barrier placed poorly — beam not spanning the gap, or robot starting inside the zone; Emitter window dirty or obstructed; beam blocked by furniture; Robot's IR receiver on top of the bumper dirty; App Keep Out Zone drawn in the wrong place, or the Smart Map shifted/was re-created Next steps if owner-level checks fail: Robot still crosses with fresh batteries, correct mode and good placement — the Virtual Wall emitter or the robot's IR receiver may be faulty; test with a second barrier if available, then contact iRobot Customer Care 1-877-855-8593

• FM-20: Roomba i4 Wi-Fi / app won't connect; schedule or voice fails

  Symptom: The iRobot Home app can't find or set up the robot, the robot drops off Wi-Fi, scheduled cleans don't run, or Alexa/Google voice commands stop working. The robot itself still cleans from the CLEAN button. Likely root causes: Trying to join a 5 GHz network — the i4 only supports 2.4 GHz Wi-Fi; Weak Wi-Fi signal where the Home Base sits, or router too far; Wrong Wi-Fi password, or phone not on the same 2.4 GHz network during setup; Router settings (band steering, AP/client isolation, MAC filtering, captive portal); App or robot software glitch; account/cloud outage affecting voice; Robot needs a reboot or re-pair after a router/password change Next steps if owner-level checks fail: Robot connects but repeatedly drops off — signal/router issue; relocate base or add a 2.4 GHz extender; App still can't find the robot after re-pair on a confirmed 2.4 GHz network — contact iRobot Customer Care 1-877-855-8593

• FM-07: Roomba i4 Error 10 — Drive wheel not turning

  Symptom: Robot reports a drive fault; one wheel does not turn, robot spins or goes nowhere. Likely root causes: Drive wheel jammed by debris; Drive motor/gearbox fault; Wheel encoder failure; Wheel module worn out Next steps if owner-level checks fail: One wheel is dead or grinds under power after cleaning — replace the drive-wheel module (aftermarket modules available) or contact iRobot Customer Care 1-877-855-8593

• FM-14: Roomba i4 Won't dock / Recharge & Resume not finishing

  Symptom: Robot fails to return to the dock, misses the contacts and doesn't charge, or during Recharge & Resume it docks but never goes back out to finish. Likely root causes: Dock in a poor spot (corner, under furniture, on carpet, too close to walls); IR docking beam blocked by furniture or strong sunlight; Charging contacts dirty (robot or dock); Dock unplugged / on a switched outlet; Battery too low or worn to navigate home / complete resume; Robot lost its place on the map (moved or picked up) so it can't resume Next steps if owner-level checks fail: Robot sees the dock but never seats on the contacts — check contact alignment/wear; if the IR receiver is suspect, contact iRobot Customer Care 1-877-855-8593

• FM-09: Roomba i4 Charging Error 1 — Battery not detected

  Symptom: On the dock or charger the robot reports the battery isn't detected / connected and won't charge. Likely root causes: Battery not seated / loose after a replacement; Yellow plastic pull-tab still in place on a new unit; Battery contacts dirty or corroded; Battery completely flat (deep discharge) Next steps if owner-level checks fail: Battery still not detected after reseating with clean contacts — the pack is likely dead; fit a genuine iRobot replacement; A brand-new genuine battery still not detected — robot charge circuit may be faulty; contact iRobot Customer Care 1-877-855-8593

• FM-01: Roomba i4 Error 1 — “Move to a new location”

  Symptom: Robot stops, sounds the two-tone error, beeps once, and asks to be moved to a new location. Often near edges, thresholds, or after the robot climbs onto something. Likely root causes: Robot physically stuck (wedged under furniture, on a threshold, on cords or a small rug); A side wheel has dropped/hung over an edge and lost floor contact; Drive wheel can't fully retract/extend because of hair or debris; Thick tassels or a rug fringe caught underneath Next steps if owner-level checks fail: Error 1 repeats on open level floor with free wheels — a wheel drop-sensor or drive module may be faulty; contact iRobot Customer Care 1-877-855-8593

• FM-04: Roomba i4 Error 6 — Cliff sensors / drop

  Symptom: Robot beeps six times, reports a cliff/drop, backs up and refuses to continue — even on flat floor, or it won't cross a dark rug. Likely root causes: Cliff sensors are dirty (dust film) and read a false drop; Robot really is at a stair edge or ledge; Very dark or high-gloss floor/rug looks like a void to the IR sensors; Robot lifted/carried while running Next steps if owner-level checks fail: Error 6 persists on clean sensors and normal flooring — a cliff sensor may have failed; contact iRobot Customer Care 1-877-855-8593

• FM-23: Roomba i4 i4+ Clean Base bag full / replace the bag

  Symptom: The app or the Clean Base indicates the dirt-disposal bag is full, or the base stops emptying and prompts you to change the bag. Likely root causes: The enclosed dirt-disposal bag is full (normal after ~30–60 days depending on use); Bag not fully seated, or the lid not closed, so the base reads it as missing/full; Non-genuine bag without the detection tab Next steps if owner-level checks fail: Base still reports “bag full” or “no bag” with a correctly seated genuine bag — the bag-detect sensor or lid switch may be faulty; contact iRobot Customer Care 1-877-855-8593

• FM-13: Roomba i4 Charging Error 8 / 9 / 10 — Worn battery

  Symptom: Robot reports charging error 8, 9 or 10; battery won't charge or won't hold charge. Likely root causes: Battery worn out from age/cycles (error 9); Cell imbalance — pack can no longer balance/charge (error 10); General battery/charging fault (error 8); Counterfeit pack Next steps if owner-level checks fail: A new genuine battery still throws error 8/9/10 — robot charging circuit fault; contact iRobot Customer Care 1-877-855-8593