Dyson Robot Vacuums Error Codes

F1

Robot will not start a clean and reports F1 / single red LED fault; may also say there is a problem with the battery.

Battery pack communication or capacity fault

F10

Robot displays F10 and refuses to start; may mention an internal temperature or overheating issue.

Over‑temperature protection triggered

F11

Robot shows F11 and may not connect to Wi‑Fi or the Dyson app.

Wi‑Fi or communication module fault

F12

Robot displays F12 and may stop mid‑clean with no obvious mechanical issue.

Internal power distribution or low‑voltage rail fault

F13

Robot shows F13 and may not detect walls or furniture correctly, bumping repeatedly.

Side or wall‑following sensor fault

F14

Robot displays F14 and may not start, often after a drop or impact.

Internal accelerometer or impact sensor fault

F15

Robot shows F15 and may not charge correctly or may shut down when lifted.

Charge detection or battery temperature sensor fault

F16

Robot displays F16 and may not detect or drive the side brush (if fitted).

Side brush motor stall or failure

F17

Robot shows F17 and may not detect the dust bin correctly; may say the bin is missing or not fitted.

Dust bin presence or latch sensor fault

F18

Robot displays F18 and may not start due to a reported internal fan or cooling issue.

Electronics cooling fan fault (if fitted)

F19

Robot shows F19 and may not start a scheduled clean; often associated with clock or memory issues.

Real‑time clock or non‑volatile memory fault

F2

Robot stops shortly after starting and displays F2; may say there is a problem with the suction or motor.

Main suction motor overcurrent or stall

F20

Robot displays F20 and may not detect or control the main brush bar correctly.

Brush bar speed sensor or feedback fault

F3

Robot reports F3 and stops; may indicate a problem with the brush bar or floor tool.

Brush bar motor overload or stall

F4

Robot displays F4 and will not move; may say there is a problem with the drive system or wheels.

Drive wheel motor stall or overcurrent

F5

Robot shows F5 and stops; may indicate a sensor fault or navigation problem.

Cliff or drop sensor failure

F6

Robot displays F6 and refuses to start; may mention an internal error or system fault.

Main control board or firmware fault

F7

Robot shows F7 and may spin in place or fail to navigate correctly.

Gyro or orientation sensor fault

F8

Robot reports F8 and stops near obstacles; may say there is a problem with the obstacle sensors.

Front obstacle or bumper sensor fault

F9

Robot shows F9 and may not detect the charging dock or room boundaries correctly.

Dock detection or IR receiver fault

Symptom

Robot vacuum cannot find or dock with the charging station reliably; it wanders near the dock but fails to align.

Docking alignment / homing issue

Symptom

Robot vacuum does not charge fully; battery indicator never reaches full or stops increasing.

Incomplete charging

Symptom

Robot vacuum does not power on at all; no lights or sounds when pressing the power button or placing on dock.

No‑power condition

Symptom

Robot vacuum drives in circles or cannot maintain a straight line.

Navigation / orientation fault without code

Symptom

Robot vacuum emits a burning smell or very hot air from vents during or after cleaning.

Overheating or electrical burning

Symptom

Robot vacuum gets stuck frequently on low thresholds, rugs, or cables.

Obstruction / entanglement susceptibility

Symptom

Robot vacuum is very loud during operation, with a high‑pitched whine or grinding noise from the suction area.

Suction motor or airflow noise issue

Symptom

Robot vacuum leaves fine dust or a trail of debris behind it after cleaning.

Dust leakage from bin or seals

Symptom

Robot vacuum leaves lines of debris along walls or in corners.

Edge cleaning / side brush effectiveness issue

Symptom

Robot vacuum leaves visible dust and debris on carpets or hard floors even after multiple passes.

Poor pickup / low suction performance

Symptom

Robot vacuum makes clicking, grinding, or rattling noises from one side while driving.

Drive wheel or gearbox mechanical noise

Symptom

Robot vacuum powers on but will not start cleaning; beeps or returns to dock without an error code.

Start‑inhibit or safety interlock condition

Symptom

Robot vacuum repeatedly bumps into furniture or fails to slow down before impact.

Obstacle detection degradation

Symptom

Robot vacuum returns to dock after only a few minutes of cleaning; runtime is significantly reduced compared to normal.

Reduced battery capacity / short runtime

Symptom

Robot vacuum smells musty or dusty when running, even after emptying the bin.

Odor from filters or internal dust buildup

Symptom

Robot vacuum stops and displays no code but all lights flash; it resumes after cooling.

Thermal shutdown without stored error

Symptom

Robot vacuum stops at the top of stairs or edges and refuses to move forward, even on flat surfaces near dark rugs.

False cliff detection

Symptom

Robot vacuum’s app map is inaccurate or the robot gets lost frequently, even though it completes some cleaning.

Mapping / localization performance issue

Symptom

Robot vacuum’s brush bar stops spinning intermittently without showing an error code.

Intermittent brush bar drive fault