Tesvor
Tesvor 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; app or voice prompt reports E1 error shortly after power-on.
Main Brush Motor Overload / Stall
E10
Robot vacuum with LDS/LiDAR tower reports E10; mapping fails or robot cannot start navigation.
LiDAR / Laser Distance Sensor Error
E11
Robot reports E11; often related to Wi‑Fi or app connection issues on some Tesvor models.
Wi‑Fi Module / Communication Error
E12
Robot reports E12; often associated with battery or charging problems.
Battery Pack / Power Supply Error
E13
Robot reports E13; water tank model may stop mopping function.
Water Tank Detection / Pump Error
E14
Robot reports E14; often appears when the dust bin is removed or not detected.
Dust Bin Detection Error
E15
Robot reports E15; may shut down unexpectedly during cleaning.
Overheating Protection Triggered
E16
Robot reports E16; may be unable to return to dock or complete mapping.
Front IR / Wall Sensor Error
E17
Robot reports E17; often appears when the robot is lifted or tilted.
Tilt / Lift Sensor Error
E18
Robot reports E18; may not dock correctly or may overshoot the charging base.
Charging Contact / Docking Sensor Error
E2
Robot stops shortly after starting and reports E2; main brush does not spin even though side brushes may move.
Main Brush Motor Electrical Fault
E3
Robot announces E3 or shows E3 in the app; side brushes do not rotate or stop intermittently.
Side Brush Motor Overload / Stall
E4
Robot stops and reports E4; wheels may not move or robot struggles to drive.
Drive Wheel Motor Overload / Stall
E5
Robot reports E5 and stops; often occurs when approaching stairs or dark carpets.
Cliff / Anti-Drop Sensor Error
E6
Robot announces E6 or shows E6 in the app; bumper may appear stuck or robot thinks it is constantly colliding.
Front Bumper / Collision Sensor Stuck
E7
Robot reports E7; often associated with navigation failure or spinning in place.
Gyroscope / IMU Sensor Error
E8
Robot stops and reports E8; suction is weak or fan does not start.
Vacuum Fan Motor Error
E9
Robot reports E9; often accompanied by erratic movement or inability to track position.
Wheel Encoder / Odometry Error
Symptom
Robot cannot find or dock with the charging station reliably; it wanders near the dock but fails to connect.
Docking Alignment / IR Beacon Issue
Symptom
Robot connects to Wi‑Fi intermittently or drops connection during cleaning.
Unstable Wi‑Fi Connectivity
Symptom
Robot does not respond to app commands, but cleans normally via buttons.
Cloud / App Communication Issue
Symptom
Robot frequently bumps into furniture hard or fails to detect obstacles until very close.
Obstacle Detection Degradation
Symptom
Robot gets stuck frequently on low thresholds, rugs, or cords; wheels spin but it cannot free itself.
Traction / Ground Clearance Issue
Symptom
Robot has very weak suction; it moves around but picks up little debris.
Reduced Suction Performance
Symptom
Robot is unusually loud compared to when it was new, even after cleaning.
General Mechanical Wear / Noise
Symptom
Robot leaves lines of debris behind or pushes dirt around instead of picking it up.
Main Brush Wear or Misinstallation
Symptom
Robot leaves wet streaks or puddles; water leaks from the water tank even when not mopping.
Water Tank Leakage
Symptom
Robot makes clicking or grinding noises from one side when moving; may veer to one side.
Drive Wheel Gearbox Wear
Symptom
Robot makes loud grinding or rattling noises from the brush area during cleaning.
Main Brush Gearbox or Bearing Damage
Symptom
Robot mop function does not dispense water; mop pad stays dry.
No Water Dispensing
Symptom
Robot smells like burning plastic or hot electronics during or after cleaning.
Overheating Component / Electrical Damage
Symptom
Robot spins in circles or cannot navigate straight; no specific error code shown.
Navigation / Odometry Drift
Symptom
Robot starts but shuts off after a few minutes of cleaning, even though the battery was fully charged.
Battery Capacity Degradation
Symptom
Robot stops at the top of stairs or dark carpets even though there is no drop; may refuse to cross dark patterns.
False Cliff Detection
Symptom
Robot vacuum does not power on at all; no lights, no sounds, even when placed on the dock.
No Power / Dead Robot
Symptom
Robot's LEDs or display do not light up, but the robot still moves and cleans.
LED / Display Panel Failure
Symptom
Robot's map resets frequently or cannot save maps between cleaning sessions.
Map Storage / Memory Issue
Symptom
Robot's schedule does not run at the programmed times, or it starts at random times.
Scheduling / RTC (Real-Time Clock) Fault
Symptom
Robot's voice prompts are distorted, very quiet, or not audible at all.
Speaker / Audio Output Fault
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E1 |
Robot vacuum will not start cleaning; app or voice prompt reports E1 error shortly after power-on.
|
Main Brush Motor Overload / Stall | View Details |
| E10 |
Robot vacuum with LDS/LiDAR tower reports E10; mapping fails or robot cannot start navigation.
|
LiDAR / Laser Distance Sensor Error | View Details |
| E11 |
Robot reports E11; often related to Wi‑Fi or app connection issues on some Tesvor models.
|
Wi‑Fi Module / Communication Error | View Details |
| E12 |
Robot reports E12; often associated with battery or charging problems.
|
Battery Pack / Power Supply Error | View Details |
| E13 |
Robot reports E13; water tank model may stop mopping function.
|
Water Tank Detection / Pump Error | View Details |
| E14 |
Robot reports E14; often appears when the dust bin is removed or not detected.
|
Dust Bin Detection Error | View Details |
| E15 |
Robot reports E15; may shut down unexpectedly during cleaning.
|
Overheating Protection Triggered | View Details |
| E16 |
Robot reports E16; may be unable to return to dock or complete mapping.
|
Front IR / Wall Sensor Error | View Details |
| E17 |
Robot reports E17; often appears when the robot is lifted or tilted.
|
Tilt / Lift Sensor Error | View Details |
| E18 |
Robot reports E18; may not dock correctly or may overshoot the charging base.
|
Charging Contact / Docking Sensor Error | View Details |
| E2 |
Robot stops shortly after starting and reports E2; main brush does not spin even though side brushes may move.
|
Main Brush Motor Electrical Fault | View Details |
| E3 |
Robot announces E3 or shows E3 in the app; side brushes do not rotate or stop intermittently.
|
Side Brush Motor Overload / Stall | View Details |
| E4 |
Robot stops and reports E4; wheels may not move or robot struggles to drive.
|
Drive Wheel Motor Overload / Stall | View Details |
| E5 |
Robot reports E5 and stops; often occurs when approaching stairs or dark carpets.
|
Cliff / Anti-Drop Sensor Error | View Details |
| E6 |
Robot announces E6 or shows E6 in the app; bumper may appear stuck or robot thinks it is constantly colliding.
|
Front Bumper / Collision Sensor Stuck | View Details |
| E7 |
Robot reports E7; often associated with navigation failure or spinning in place.
|
Gyroscope / IMU Sensor Error | View Details |
| E8 |
Robot stops and reports E8; suction is weak or fan does not start.
|
Vacuum Fan Motor Error | View Details |
| E9 |
Robot reports E9; often accompanied by erratic movement or inability to track position.
|
Wheel Encoder / Odometry Error | View Details |
| – |
Robot cannot find or dock with the charging station reliably; it wanders near the dock but fails to connect.
|
Docking Alignment / IR Beacon Issue | View Details |
| – |
Robot connects to Wi‑Fi intermittently or drops connection during cleaning.
|
Unstable Wi‑Fi Connectivity | View Details |
| – |
Robot does not respond to app commands, but cleans normally via buttons.
|
Cloud / App Communication Issue | View Details |
| – |
Robot frequently bumps into furniture hard or fails to detect obstacles until very close.
|
Obstacle Detection Degradation | View Details |
| – |
Robot gets stuck frequently on low thresholds, rugs, or cords; wheels spin but it cannot free itself.
|
Traction / Ground Clearance Issue | View Details |
| – |
Robot has very weak suction; it moves around but picks up little debris.
|
Reduced Suction Performance | View Details |
| – |
Robot is unusually loud compared to when it was new, even after cleaning.
|
General Mechanical Wear / Noise | View Details |
| – |
Robot leaves lines of debris behind or pushes dirt around instead of picking it up.
|
Main Brush Wear or Misinstallation | View Details |
| – |
Robot leaves wet streaks or puddles; water leaks from the water tank even when not mopping.
|
Water Tank Leakage | View Details |
| – |
Robot makes clicking or grinding noises from one side when moving; may veer to one side.
|
Drive Wheel Gearbox Wear | View Details |
| – |
Robot makes loud grinding or rattling noises from the brush area during cleaning.
|
Main Brush Gearbox or Bearing Damage | View Details |
| – |
Robot mop function does not dispense water; mop pad stays dry.
|
No Water Dispensing | View Details |
| – |
Robot smells like burning plastic or hot electronics during or after cleaning.
|
Overheating Component / Electrical Damage | View Details |
| – |
Robot spins in circles or cannot navigate straight; no specific error code shown.
|
Navigation / Odometry Drift | View Details |
| – |
Robot starts but shuts off after a few minutes of cleaning, even though the battery was fully charged.
|
Battery Capacity Degradation | View Details |
| – |
Robot stops at the top of stairs or dark carpets even though there is no drop; may refuse to cross dark patterns.
|
False Cliff Detection | View Details |
| – |
Robot vacuum does not power on at all; no lights, no sounds, even when placed on the dock.
|
No Power / Dead Robot | View Details |
| – |
Robot's LEDs or display do not light up, but the robot still moves and cleans.
|
LED / Display Panel Failure | View Details |
| – |
Robot's map resets frequently or cannot save maps between cleaning sessions.
|
Map Storage / Memory Issue | View Details |
| – |
Robot's schedule does not run at the programmed times, or it starts at random times.
|
Scheduling / RTC (Real-Time Clock) Fault | View Details |
| – |
Robot's voice prompts are distorted, very quiet, or not audible at all.
|
Speaker / Audio Output Fault | View Details |
No matching codes found
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