Exact model-family answer directory

iRobot Roomba s9/s9+ troubleshooting

Choose the symptom actually shown by s9, s9+. iRobot Roomba; mapping, obstacle avoidance, self-emptying and mop functions vary. Error codes remain separate records because the same characters can mean different things on another platform.

no suctionbrush not spinningkeeps stoppingnot chargingshort runtimeerror light

Reviewed records

12 exact answers

Not sure where the fault is?

iRobot · short runtime

iRobot Roomba s9/s9+ battery runs out too quickly

For the iRobot Roomba s9/s9+, power mode, powered head, blockage, temperature and battery age change runtime.

Open record iRobot · brush not spinning

iRobot Roomba s9/s9+ brush roll will not spin

For the iRobot Roomba s9/s9+, hair wrap, floor setting, blockage, belt/head power and overload protection should be separated.

Open record iRobot · filter warning

iRobot Roomba s9/s9+ filter warning stays on

For the iRobot Roomba s9/s9+, the filter must be the correct part, clean, fully dry and seated while the airflow path is clear.

Open record iRobot · no suction

iRobot Roomba s9/s9+ has weak or no suction

For the iRobot Roomba s9/s9+, airflow must pass through the head, wand, bin, cyclone and fully dry filters without a leak or blockage.

Open record iRobot · keeps stopping

iRobot Roomba s9/s9+ keeps stopping, pulsing or shutting off

For the iRobot Roomba s9/s9+, blockage protection, dirty filters, battery temperature and motor overheating are common boundaries.

Open record iRobot · loud noise

iRobot Roomba s9/s9+ makes a loud, rattling, whistling or grinding noise

For the iRobot Roomba s9/s9+, sound location identifies an air leak, blockage, brush, bearing or motor fault.

Open record iRobot · gets lost

iRobot Roomba s9/s9+ robot vacuum gets lost, stuck or misses rooms

For the iRobot Roomba s9/s9+, lighting, sensors, map state, floor transitions and environmental traps matter more than repeated factory resets.

Open record iRobot · not docking

iRobot Roomba s9/s9+ robot vacuum will not return to or charge on the dock

For the iRobot Roomba s9/s9+, dock power, contact cleanliness, approach clearance, map location and battery state should be separated.

Open record iRobot · error light

iRobot Roomba s9/s9+ shows an error light, symbol or message

For the iRobot Roomba s9/s9+, the exact indicator pattern and operating stage are required before reset or parts replacement.

Open record iRobot · smell

iRobot Roomba s9/s9+ smells bad while running

For the iRobot Roomba s9/s9+, dirty bins/filters, trapped organic material and overheating odors require different action.

Open record iRobot · not charging

iRobot Roomba s9/s9+ will not charge

For the iRobot Roomba s9/s9+, outlet, charger, dock contacts, battery temperature and pack condition should be proved before replacement.

Open record iRobot · Wi-Fi

iRobot Roomba s9/s9+ will not connect to Wi-Fi or the app

For the iRobot Roomba s9/s9+, confirm supported Wi-Fi band/security, account and pairing mode before deleting maps.

Open record

Confirm the model first

Which units this covers, and how to tell yours is one of them

Every answer below is scoped to these model identifiers. A neighbouring model in the same line can use a different part, a different reset sequence or a different radio, so matching the identifier before following a procedure is the step that decides whether the rest of the page applies to you.

Model numbers and patterns: s9, s9+
What that covers: iRobot Roomba; mapping, obstacle avoidance, self-emptying and mop functions vary.

Published specification

What is true of this model and changes how you fix it

These are the properties that decide which procedure applies. Each is read from the manufacturer’s own published figures for this model, not carried over from a sibling that shares its retail name.

Type — ROBOT vacuum (D-shape): A high-end ROBOT vacuum with a distinctive D-shape front for better corner and edge cleaning, and a Clean Base self-empty dock — symptoms are navigation, docking, brushes and the base.
Clean Base self-empty: Empties into the Clean Base dock; 'won't empty' is a full bag or clogged path, 'won't dock/charge' is dirty contacts, a moved/unplugged dock, or blocked clearance.
Brushes, wheels & sensors: Wider dual rubber brushrolls, a corner side brush, drive wheels and sensors — clear hair and wipe sensors if it gets stuck, circles or misses areas.

Where these figures were read. irobot.com Roomba s9 (robot vacuum, D-shape, Clean Base self-empty), read 2026-09-01

Manufacturer support for this product line. iRobot Support — Roomba support. Official Roomba setup, error, mapping, cleaning and repair support.

Exact questions

Questions that only have an answer for the iRobot Roomba s9/s9+

Each answer below uses this model’s own published figures. The same question asked about a different model in the line has a different answer, which is why it is answered here rather than on a general page.

My Roomba s9 isn't picking up as well as it used to.+

Clean the moving parts. Pull the two rubber brushrolls and clear hair from them and their end bearings, remove hair from the side brush and the front wheel, and empty/clean the bin and its filter (tap out the filter; do not wash iRobot filters). Wipe the sensors. On the s9, corner and edge pickup depends on the side brush spinning freely, so a hair-bound side brush is a common cause of dust left along edges.

Structured depth, not empty permutations

Every published record carries a direct answer, scope, ordered fixes, risk notes and sources.

Device and manufacturer hubs share a consistent record system, but each answer carries the relevant controls, fault boundaries, consequences and official support entry point for that platform.

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