Ultenic
Ultenic Robot Vacuums Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E1
Robot vacuum will not start cleaning and reports E1 shortly after power-on.
Left Wheel Motor Stall
E10
Robot vacuum displays E10 and suction stops or never starts.
Fan / Suction Motor Error
E11
Robot vacuum shows E11 and may not detect the dust bin correctly.
Dust Bin Detection Error
E12
Robot vacuum reports E12 and may not move or may shut down unexpectedly.
Overcurrent / Overload Protection
E13
Robot vacuum shows E13 and cannot find or dock with the charging station.
Dock IR Receiver / Locator Error
E14
Robot vacuum displays E14 and mapping or navigation fails frequently.
LDS / Laser Distance Sensor Error (for LiDAR-equipped Ultenic models)
E15
Robot vacuum shows E15 and cannot connect to Wi‑Fi or the Ultenic app.
Wi‑Fi Module / Communication Error
E16
Robot vacuum reports E16 and refuses to start mopping mode.
Water Tank Detection Error
E17
Robot vacuum shows E17 and water does not dispense during mopping.
Water Pump / Flow Error
E18
Robot vacuum displays E18 and stops near carpets or thresholds.
Obstacle Sensor / Anti-Collision Error
E19
Robot vacuum shows E19 and mapping data is lost or cannot be saved.
Internal Memory / Map Storage Error
E2
Robot vacuum stops shortly after starting and displays E2.
Right Wheel Motor Stall
E20
Robot vacuum reports E20 and the auto-empty base does not activate (for Ultenic models with self-emptying station).
Auto-Empty Dock Suction Error
E3
Robot vacuum beeps and shows E3, often when approaching stairs or dark carpets.
Cliff Sensor Error
E4
Robot vacuum reports E4 and stops, often after bumping into furniture.
Bumper Stuck or Bumper Switch Error
E5
Robot vacuum stops and displays E5, usually within a few seconds of starting.
Main Brush Motor Overload
E6
Robot vacuum shows E6 and refuses to start cleaning.
Side Brush Motor Error
E7
Robot vacuum displays E7 and may spin in place or fail to navigate correctly.
Gyroscope / IMU Calibration Error
E8
Robot vacuum reports E8 and returns to the dock or shuts down.
Low Battery or Battery Protection Error
E9
Robot vacuum shows E9 and will not start cleaning or docking properly.
Charging Error / Dock Communication Fault
Symptom
Robot vacuum connects to Wi‑Fi but frequently drops connection or appears offline in the app.
Unstable Wi‑Fi Connectivity
Symptom
Robot vacuum does not dispense any water during mopping, but no error code is shown.
Insufficient Water Flow
Symptom
Robot vacuum does not return to the charging dock at the end of cleaning.
Dock Homing / Navigation Failure
Symptom
Robot vacuum does not start when the power/clean button is pressed.
No Power / Won't Turn On
Symptom
Robot vacuum drags the mopping pad on carpets instead of avoiding them.
Carpet Detection / Avoidance Failure in Mopping Mode
Symptom
Robot vacuum frequently reports 'stuck' even on open, flat floors.
False Stuck Detection
Symptom
Robot vacuum frequently reports that the dust bin is full even after emptying.
False Dust Bin Full Detection
Symptom
Robot vacuum gets stuck frequently on thresholds, rugs, or cables.
Mobility / Obstacle Handling Issue
Symptom
Robot vacuum is very loud during operation compared to when it was new.
Excessive Noise from Fan or Brush System
Symptom
Robot vacuum leaves hair and debris along wall edges and corners.
Poor Edge Cleaning Performance
Symptom
Robot vacuum leaves scratch marks or scuffs on delicate floors.
Abrasive Contact with Floor
Symptom
Robot vacuum leaves visible dust lines and poor pickup performance on hard floors.
Reduced Suction / Airflow Restriction
Symptom
Robot vacuum leaves wet streaks or puddles on the floor after mopping.
Excessive Water Dispensing
Symptom
Robot vacuum randomly shuts off in the middle of cleaning without returning to dock.
Unexpected Power Loss
Symptom
Robot vacuum repeatedly cleans the same small area and does not progress through the room.
Navigation Loop / Localization Failure
Symptom
Robot vacuum runs for only a short time before needing to recharge.
Short Runtime / Battery Capacity Loss
Symptom
Robot vacuum smells burnt or produces a strong odor during operation.
Overheating Motor or Electrical Component
Symptom
Robot vacuum's main brush does not spin, but suction still works.
Main Brush Drive Failure
Symptom
Robot vacuum's side brush spins intermittently or stops under light load.
Weak Side Brush Motor
Symptom
Robot vacuum's wheels slip and spin in place on smooth floors.
Loss of Traction
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E1 |
Robot vacuum will not start cleaning and reports E1 shortly after power-on.
|
Left Wheel Motor Stall | View Details |
| E10 |
Robot vacuum displays E10 and suction stops or never starts.
|
Fan / Suction Motor Error | View Details |
| E11 |
Robot vacuum shows E11 and may not detect the dust bin correctly.
|
Dust Bin Detection Error | View Details |
| E12 |
Robot vacuum reports E12 and may not move or may shut down unexpectedly.
|
Overcurrent / Overload Protection | View Details |
| E13 |
Robot vacuum shows E13 and cannot find or dock with the charging station.
|
Dock IR Receiver / Locator Error | View Details |
| E14 |
Robot vacuum displays E14 and mapping or navigation fails frequently.
|
LDS / Laser Distance Sensor Error (for LiDAR-equipped Ultenic models) | View Details |
| E15 |
Robot vacuum shows E15 and cannot connect to Wi‑Fi or the Ultenic app.
|
Wi‑Fi Module / Communication Error | View Details |
| E16 |
Robot vacuum reports E16 and refuses to start mopping mode.
|
Water Tank Detection Error | View Details |
| E17 |
Robot vacuum shows E17 and water does not dispense during mopping.
|
Water Pump / Flow Error | View Details |
| E18 |
Robot vacuum displays E18 and stops near carpets or thresholds.
|
Obstacle Sensor / Anti-Collision Error | View Details |
| E19 |
Robot vacuum shows E19 and mapping data is lost or cannot be saved.
|
Internal Memory / Map Storage Error | View Details |
| E2 |
Robot vacuum stops shortly after starting and displays E2.
|
Right Wheel Motor Stall | View Details |
| E20 |
Robot vacuum reports E20 and the auto-empty base does not activate (for Ultenic models with self-emptying station).
|
Auto-Empty Dock Suction Error | View Details |
| E3 |
Robot vacuum beeps and shows E3, often when approaching stairs or dark carpets.
|
Cliff Sensor Error | View Details |
| E4 |
Robot vacuum reports E4 and stops, often after bumping into furniture.
|
Bumper Stuck or Bumper Switch Error | View Details |
| E5 |
Robot vacuum stops and displays E5, usually within a few seconds of starting.
|
Main Brush Motor Overload | View Details |
| E6 |
Robot vacuum shows E6 and refuses to start cleaning.
|
Side Brush Motor Error | View Details |
| E7 |
Robot vacuum displays E7 and may spin in place or fail to navigate correctly.
|
Gyroscope / IMU Calibration Error | View Details |
| E8 |
Robot vacuum reports E8 and returns to the dock or shuts down.
|
Low Battery or Battery Protection Error | View Details |
| E9 |
Robot vacuum shows E9 and will not start cleaning or docking properly.
|
Charging Error / Dock Communication Fault | View Details |
| – |
Robot vacuum connects to Wi‑Fi but frequently drops connection or appears offline in the app.
|
Unstable Wi‑Fi Connectivity | View Details |
| – |
Robot vacuum does not dispense any water during mopping, but no error code is shown.
|
Insufficient Water Flow | View Details |
| – |
Robot vacuum does not return to the charging dock at the end of cleaning.
|
Dock Homing / Navigation Failure | View Details |
| – |
Robot vacuum does not start when the power/clean button is pressed.
|
No Power / Won't Turn On | View Details |
| – |
Robot vacuum drags the mopping pad on carpets instead of avoiding them.
|
Carpet Detection / Avoidance Failure in Mopping Mode | View Details |
| – |
Robot vacuum frequently reports 'stuck' even on open, flat floors.
|
False Stuck Detection | View Details |
| – |
Robot vacuum frequently reports that the dust bin is full even after emptying.
|
False Dust Bin Full Detection | View Details |
| – |
Robot vacuum gets stuck frequently on thresholds, rugs, or cables.
|
Mobility / Obstacle Handling Issue | View Details |
| – |
Robot vacuum is very loud during operation compared to when it was new.
|
Excessive Noise from Fan or Brush System | View Details |
| – |
Robot vacuum leaves hair and debris along wall edges and corners.
|
Poor Edge Cleaning Performance | View Details |
| – |
Robot vacuum leaves scratch marks or scuffs on delicate floors.
|
Abrasive Contact with Floor | View Details |
| – |
Robot vacuum leaves visible dust lines and poor pickup performance on hard floors.
|
Reduced Suction / Airflow Restriction | View Details |
| – |
Robot vacuum leaves wet streaks or puddles on the floor after mopping.
|
Excessive Water Dispensing | View Details |
| – |
Robot vacuum randomly shuts off in the middle of cleaning without returning to dock.
|
Unexpected Power Loss | View Details |
| – |
Robot vacuum repeatedly cleans the same small area and does not progress through the room.
|
Navigation Loop / Localization Failure | View Details |
| – |
Robot vacuum runs for only a short time before needing to recharge.
|
Short Runtime / Battery Capacity Loss | View Details |
| – |
Robot vacuum smells burnt or produces a strong odor during operation.
|
Overheating Motor or Electrical Component | View Details |
| – |
Robot vacuum's main brush does not spin, but suction still works.
|
Main Brush Drive Failure | View Details |
| – |
Robot vacuum's side brush spins intermittently or stops under light load.
|
Weak Side Brush Motor | View Details |
| – |
Robot vacuum's wheels slip and spin in place on smooth floors.
|
Loss of Traction | View Details |
No matching codes found
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