Lefant
Lefant 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 app or voice prompt reports E1 error.
Main Brush Motor Overload / Stall
E10
Robot vacuum reports E10 and cannot find or return to the charging dock.
Charging Dock IR Receiver / Home Signal Error
E11
Robot vacuum shows E11 or announces a sensor error related to wall or obstacle detection.
Wall Sensor / Front IR Sensor Fault
E12
Robot vacuum reports E12 and stops, often when using the mopping function.
Water Tank / Mop Module Detection Error
E13
Robot vacuum announces E13 or shows an overcurrent/overload error when starting suction or brushes.
Overcurrent Protection Triggered
E14
Robot vacuum shows E14 or reports a fan speed/suction level error.
Fan Speed Sensor / Tachometer Error
E15
Robot vacuum reports E15 and cannot connect to Wi‑Fi or the app.
Wi‑Fi Module / Communication Error
E16
Robot vacuum shows E16 or announces a timekeeping/clock error, schedules do not run.
RTC (Real-Time Clock) / Memory Error
E17
Robot vacuum reports E17 and stops with a message related to over-temperature or overheating.
Overtemperature Protection Triggered
E18
Robot vacuum announces E18 or shows a stuck robot error even on flat, open floor.
Stuck Detection / Motion Sensor Error
E19
Robot vacuum shows E19 or reports a low-voltage protection error even after charging.
Low Voltage Lockout / Battery Protection
E2
Robot vacuum stops shortly after starting and reports E2 error via app or voice prompt.
Side Brush Motor Overload / Stall
E20
Robot vacuum reports E20 and cannot start mapping or navigation features.
LIDAR / Laser Distance Sensor Error (for models equipped with LDS)
E3
Robot vacuum announces E3 or shows E3 in the app and stops moving, often after hitting an obstacle.
Wheel Motor Overload / Wheel Stuck
E4
Robot vacuum reports E4 and stops, often near stairs or dark carpets.
Cliff Sensor Error / Obstruction
E5
Robot vacuum announces E5 or shows E5 in the app and stops with the dustbin icon or suction icon highlighted.
Fan Motor / Suction System Fault
E6
Robot vacuum reports E6 and refuses to start or stops immediately after starting.
Bumper Sensor Stuck / Collision Sensor Error
E7
Robot vacuum displays E7 or announces a gyroscope/orientation error and cannot navigate properly.
Gyroscope / IMU Calibration Failure
E8
Robot vacuum reports E8 and will not charge or shows abnormal battery status in the app.
Battery Pack / Charging Protection Fault
E9
Robot vacuum announces E9 or shows an error related to the dustbin or filter and stops.
Dustbin Presence / Dustbin Sensor Error
Symptom
Robot vacuum does not dispense any water while in mopping mode; mop pad stays completely dry.
No Water Dispensing
Symptom
Robot vacuum does not power on at all, no lights or sounds, even when placed on the charging dock.
No Power / Dead Robot
Symptom
Robot vacuum does not respond to app commands, but Wi‑Fi indicator shows connected.
Cloud / Local Communication Issue
Symptom
Robot vacuum does not return to the charging dock at the end of cleaning and stops in random locations.
Auto-Return / Docking Failure
Symptom
Robot vacuum emits a burning smell or very hot air from the exhaust during operation.
Overheating Motor / Electrical Overload
Symptom
Robot vacuum frequently gets stuck on low thresholds, carpets, or cords and cannot free itself.
Poor Obstacle Handling / Traction Issue
Symptom
Robot vacuum frequently reports that the dustbin is full or missing, even when it is empty and properly installed.
False Dustbin Full / Presence Detection
Symptom
Robot vacuum is very loud during operation, with rattling or grinding noises from the bottom.
Mechanical Noise / Worn Bearings
Symptom
Robot vacuum leaves a trail of dust and debris behind it and suction seems weak.
Low Suction Performance
Symptom
Robot vacuum leaves wet streaks or puddles when mopping, or water continues to drip when docked.
Water Tank Over-Dispensing / Leak
Symptom
Robot vacuum moves erratically, misses large areas, or repeatedly cleans the same spot without mapping properly.
Navigation / Mapping Failure
Symptom
Robot vacuum powers on but will not start cleaning when the Start/Clean button is pressed or when commanded from the app.
Start Command / User Interface Failure
Symptom
Robot vacuum runs for only a few minutes and then returns to the dock or shuts off, even though the battery indicator shows partially full.
Severely Reduced Battery Capacity
Symptom
Robot vacuum stops under furniture and cannot free itself, even though there seems to be enough clearance.
Top Cover / Anti-Stuck Sensor Issue
Symptom
Robot vacuum’s front caster wheel does not rotate freely, causing drag marks or navigation issues.
Front Caster Wheel Seized
Symptom
Robot vacuum’s main brush does not rotate, but suction works and no error code appears.
Main Brush Drive Failure Without Error
Symptom
Robot vacuum’s schedule does not run at the programmed time, but manual start works.
Scheduling / Timer Malfunction
Symptom
Robot vacuum’s side brush does not spin, but no error code is displayed.
Side Brush Non-Functional Without Error
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E1 |
Robot vacuum will not start cleaning and app or voice prompt reports E1 error.
|
Main Brush Motor Overload / Stall | View Details |
| E10 |
Robot vacuum reports E10 and cannot find or return to the charging dock.
|
Charging Dock IR Receiver / Home Signal Error | View Details |
| E11 |
Robot vacuum shows E11 or announces a sensor error related to wall or obstacle detection.
|
Wall Sensor / Front IR Sensor Fault | View Details |
| E12 |
Robot vacuum reports E12 and stops, often when using the mopping function.
|
Water Tank / Mop Module Detection Error | View Details |
| E13 |
Robot vacuum announces E13 or shows an overcurrent/overload error when starting suction or brushes.
|
Overcurrent Protection Triggered | View Details |
| E14 |
Robot vacuum shows E14 or reports a fan speed/suction level error.
|
Fan Speed Sensor / Tachometer Error | View Details |
| E15 |
Robot vacuum reports E15 and cannot connect to Wi‑Fi or the app.
|
Wi‑Fi Module / Communication Error | View Details |
| E16 |
Robot vacuum shows E16 or announces a timekeeping/clock error, schedules do not run.
|
RTC (Real-Time Clock) / Memory Error | View Details |
| E17 |
Robot vacuum reports E17 and stops with a message related to over-temperature or overheating.
|
Overtemperature Protection Triggered | View Details |
| E18 |
Robot vacuum announces E18 or shows a stuck robot error even on flat, open floor.
|
Stuck Detection / Motion Sensor Error | View Details |
| E19 |
Robot vacuum shows E19 or reports a low-voltage protection error even after charging.
|
Low Voltage Lockout / Battery Protection | View Details |
| E2 |
Robot vacuum stops shortly after starting and reports E2 error via app or voice prompt.
|
Side Brush Motor Overload / Stall | View Details |
| E20 |
Robot vacuum reports E20 and cannot start mapping or navigation features.
|
LIDAR / Laser Distance Sensor Error (for models equipped with LDS) | View Details |
| E3 |
Robot vacuum announces E3 or shows E3 in the app and stops moving, often after hitting an obstacle.
|
Wheel Motor Overload / Wheel Stuck | View Details |
| E4 |
Robot vacuum reports E4 and stops, often near stairs or dark carpets.
|
Cliff Sensor Error / Obstruction | View Details |
| E5 |
Robot vacuum announces E5 or shows E5 in the app and stops with the dustbin icon or suction icon highlighted.
|
Fan Motor / Suction System Fault | View Details |
| E6 |
Robot vacuum reports E6 and refuses to start or stops immediately after starting.
|
Bumper Sensor Stuck / Collision Sensor Error | View Details |
| E7 |
Robot vacuum displays E7 or announces a gyroscope/orientation error and cannot navigate properly.
|
Gyroscope / IMU Calibration Failure | View Details |
| E8 |
Robot vacuum reports E8 and will not charge or shows abnormal battery status in the app.
|
Battery Pack / Charging Protection Fault | View Details |
| E9 |
Robot vacuum announces E9 or shows an error related to the dustbin or filter and stops.
|
Dustbin Presence / Dustbin Sensor Error | View Details |
| – |
Robot vacuum does not dispense any water while in mopping mode; mop pad stays completely dry.
|
No Water Dispensing | View Details |
| – |
Robot vacuum does not power on at all, no lights or sounds, even when placed on the charging dock.
|
No Power / Dead Robot | View Details |
| – |
Robot vacuum does not respond to app commands, but Wi‑Fi indicator shows connected.
|
Cloud / Local Communication Issue | View Details |
| – |
Robot vacuum does not return to the charging dock at the end of cleaning and stops in random locations.
|
Auto-Return / Docking Failure | View Details |
| – |
Robot vacuum emits a burning smell or very hot air from the exhaust during operation.
|
Overheating Motor / Electrical Overload | View Details |
| – |
Robot vacuum frequently gets stuck on low thresholds, carpets, or cords and cannot free itself.
|
Poor Obstacle Handling / Traction Issue | View Details |
| – |
Robot vacuum frequently reports that the dustbin is full or missing, even when it is empty and properly installed.
|
False Dustbin Full / Presence Detection | View Details |
| – |
Robot vacuum is very loud during operation, with rattling or grinding noises from the bottom.
|
Mechanical Noise / Worn Bearings | View Details |
| – |
Robot vacuum leaves a trail of dust and debris behind it and suction seems weak.
|
Low Suction Performance | View Details |
| – |
Robot vacuum leaves wet streaks or puddles when mopping, or water continues to drip when docked.
|
Water Tank Over-Dispensing / Leak | View Details |
| – |
Robot vacuum moves erratically, misses large areas, or repeatedly cleans the same spot without mapping properly.
|
Navigation / Mapping Failure | View Details |
| – |
Robot vacuum powers on but will not start cleaning when the Start/Clean button is pressed or when commanded from the app.
|
Start Command / User Interface Failure | View Details |
| – |
Robot vacuum runs for only a few minutes and then returns to the dock or shuts off, even though the battery indicator shows partially full.
|
Severely Reduced Battery Capacity | View Details |
| – |
Robot vacuum stops under furniture and cannot free itself, even though there seems to be enough clearance.
|
Top Cover / Anti-Stuck Sensor Issue | View Details |
| – |
Robot vacuum’s front caster wheel does not rotate freely, causing drag marks or navigation issues.
|
Front Caster Wheel Seized | View Details |
| – |
Robot vacuum’s main brush does not rotate, but suction works and no error code appears.
|
Main Brush Drive Failure Without Error | View Details |
| – |
Robot vacuum’s schedule does not run at the programmed time, but manual start works.
|
Scheduling / Timer Malfunction | View Details |
| – |
Robot vacuum’s side brush does not spin, but no error code is displayed.
|
Side Brush Non-Functional Without Error | View Details |
No matching codes found
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