LawnMaster
LawnMaster Robot Lawnmowers Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
Advertisements
E01
Robot mower will not start mowing; display shows E01 immediately after power-on or when START is pressed.
Emergency Stop / Stop Button Engaged
E02
Robot mower does not detect the boundary wire; display shows E02 and mower refuses to start or stops near the perimeter.
Boundary Loop Signal Lost
E03
Robot mower stops and displays E03 shortly after leaving the charging station or when encountering uneven ground.
Tilt Sensor / Roll-Over Protection Triggered
E04
Robot mower stops with E04 and the cutting disc does not rotate when mowing should start.
Blade Motor Overload / Stall
E05
Robot mower displays E05 and will not move; wheels do not respond when a mowing cycle is started.
Drive Motor Overcurrent / Wheel Jam
E06
Robot mower shows E06 and stops; often occurs when reversing or turning near obstacles.
Bumper / Collision Sensor Fault
E07
Robot mower displays E07 and refuses to start; often after rain or washing the mower.
Lift Sensor / Lifted Mower Detected
E08
Robot mower shows E08 and stops; often associated with erratic movement or inability to drive straight.
Wheel Encoder / Speed Sensor Error
E09
Robot mower displays E09 and returns to the charging station prematurely or will not leave the dock.
Battery Voltage Too Low / Battery Protection
E10
Robot mower shows E10 and will not charge when docked; charging LED on base may be off or flashing.
Charging Station Communication / Docking Error
E11
Robot mower displays E11 and stops; often occurs when operating in very hot or very cold conditions.
Battery Temperature Out of Range
E12
Robot mower shows E12 and behaves erratically, sometimes driving outside the boundary or failing to find the charging station.
Perimeter Signal Interference / Distorted Loop
E13
Robot mower displays E13 and stops; often after hitting a hard obstacle or curb.
Chassis Shock / Impact Sensor Triggered
E14
Robot mower shows E14 and cannot establish a wireless link to the LawnMaster app or remote control.
Communication Module Error (Bluetooth/Wi-Fi)
E15
Robot mower displays E15 and shuts down unexpectedly during operation.
Main Control Board Overheating
E16
Robot mower shows E16 and cannot complete calibration or compass-based navigation; path is erratic.
Compass / Orientation Sensor Error
E17
Robot mower displays E17 and refuses to start; often after firmware update or power surge.
Firmware / Memory Error
E18
Robot mower shows E18 and stops when entering narrow passages or complex garden areas.
Ultrasonic / Obstacle Sensor Fault
E19
Robot mower displays E19 and cannot detect rain; continues mowing in wet conditions or refuses to start when dry.
Rain Sensor Error
E20
Robot mower shows E20 and stops with the message related to security or PIN; cannot be operated.
PIN Code / Anti-Theft Lockout
Symptom
Robot mower cannot connect to the LawnMaster mobile app even though Bluetooth/Wi-Fi appears active.
App Connectivity / Pairing Issue
Symptom
Robot mower does not detect obstacles and collides hard with trees, walls, or furniture.
Obstacle Detection Failure
Symptom
Robot mower does not return to the charging station and stops in the lawn with low battery.
Docking / Homing Failure
Symptom
Robot mower emits a burning smell or shows signs of overheating around the motor area.
Motor Overheating / Electrical Overload
Symptom
Robot mower frequently gets stuck or high-centered on small bumps, roots, or uneven ground.
Chassis Ground Clearance / Traction Issue
Symptom
Robot mower is excessively noisy during operation, with grinding or rattling sounds from underneath.
Mechanical Noise from Blade Deck or Drive Train
Symptom
Robot mower is leaking oil or grease from the wheel area onto the lawn.
Drive Gearbox Seal Failure
Symptom
Robot mower leaves clumps of grass and the cut lawn looks ragged or torn rather than cleanly cut.
Poor Cut Quality / Dull Blades
Symptom
Robot mower leaves uncut strips of grass and misses areas, even though it runs regularly.
Uneven Cutting Pattern / Coverage Issue
Symptom
Robot mower occasionally shuts off completely in the middle of the lawn with no error code on restart.
Intermittent Power Loss
Symptom
Robot mower vibrates excessively and bounces while mowing, even on relatively smooth lawns.
Excessive Vibration from Cutting System
Symptom
Robot mower's blades occasionally strike the ground or scalp the lawn, leaving bare patches.
Incorrect Cutting Height / Deck Level
Symptom
Robot mower's boundary wire frequently breaks or loses connection, causing repeated boundary-related errors.
Chronic Boundary Wire Failure
Symptom
Robot mower's clock or schedule resets frequently, causing missed or random mowing times.
Real-Time Clock / Backup Power Issue
Symptom
Robot mower's display is blank or very dim, but the mower still appears to operate when scheduled.
Display Backlight / LCD Failure
Symptom
Robot mower's display or control panel does not respond to button presses, though the mower powers on.
Keypad / Control Panel Failure
Symptom
Robot mower's front caster or support wheel does not swivel freely, causing poor turning and scuffing.
Seized Front Caster / Support Wheel
Symptom
Robot mower's rain sensor triggers too easily or not at all, causing mowing at inappropriate times.
Rain Sensor Miscalibration
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Robot mower will not start mowing; display shows E01 immediately after power-on or when START is pressed.
|
Emergency Stop / Stop Button Engaged | View Details |
| E02 |
Robot mower does not detect the boundary wire; display shows E02 and mower refuses to start or stops near the perimeter.
|
Boundary Loop Signal Lost | View Details |
| E03 |
Robot mower stops and displays E03 shortly after leaving the charging station or when encountering uneven ground.
|
Tilt Sensor / Roll-Over Protection Triggered | View Details |
| E04 |
Robot mower stops with E04 and the cutting disc does not rotate when mowing should start.
|
Blade Motor Overload / Stall | View Details |
| E05 |
Robot mower displays E05 and will not move; wheels do not respond when a mowing cycle is started.
|
Drive Motor Overcurrent / Wheel Jam | View Details |
| E06 |
Robot mower shows E06 and stops; often occurs when reversing or turning near obstacles.
|
Bumper / Collision Sensor Fault | View Details |
| E07 |
Robot mower displays E07 and refuses to start; often after rain or washing the mower.
|
Lift Sensor / Lifted Mower Detected | View Details |
| E08 |
Robot mower shows E08 and stops; often associated with erratic movement or inability to drive straight.
|
Wheel Encoder / Speed Sensor Error | View Details |
| E09 |
Robot mower displays E09 and returns to the charging station prematurely or will not leave the dock.
|
Battery Voltage Too Low / Battery Protection | View Details |
| E10 |
Robot mower shows E10 and will not charge when docked; charging LED on base may be off or flashing.
|
Charging Station Communication / Docking Error | View Details |
| E11 |
Robot mower displays E11 and stops; often occurs when operating in very hot or very cold conditions.
|
Battery Temperature Out of Range | View Details |
| E12 |
Robot mower shows E12 and behaves erratically, sometimes driving outside the boundary or failing to find the charging station.
|
Perimeter Signal Interference / Distorted Loop | View Details |
| E13 |
Robot mower displays E13 and stops; often after hitting a hard obstacle or curb.
|
Chassis Shock / Impact Sensor Triggered | View Details |
| E14 |
Robot mower shows E14 and cannot establish a wireless link to the LawnMaster app or remote control.
|
Communication Module Error (Bluetooth/Wi-Fi) | View Details |
| E15 |
Robot mower displays E15 and shuts down unexpectedly during operation.
|
Main Control Board Overheating | View Details |
| E16 |
Robot mower shows E16 and cannot complete calibration or compass-based navigation; path is erratic.
|
Compass / Orientation Sensor Error | View Details |
| E17 |
Robot mower displays E17 and refuses to start; often after firmware update or power surge.
|
Firmware / Memory Error | View Details |
| E18 |
Robot mower shows E18 and stops when entering narrow passages or complex garden areas.
|
Ultrasonic / Obstacle Sensor Fault | View Details |
| E19 |
Robot mower displays E19 and cannot detect rain; continues mowing in wet conditions or refuses to start when dry.
|
Rain Sensor Error | View Details |
| E20 |
Robot mower shows E20 and stops with the message related to security or PIN; cannot be operated.
|
PIN Code / Anti-Theft Lockout | View Details |
| – |
Robot mower cannot connect to the LawnMaster mobile app even though Bluetooth/Wi-Fi appears active.
|
App Connectivity / Pairing Issue | View Details |
| – |
Robot mower does not detect obstacles and collides hard with trees, walls, or furniture.
|
Obstacle Detection Failure | View Details |
| – |
Robot mower does not return to the charging station and stops in the lawn with low battery.
|
Docking / Homing Failure | View Details |
| – |
Robot mower emits a burning smell or shows signs of overheating around the motor area.
|
Motor Overheating / Electrical Overload | View Details |
| – |
Robot mower frequently gets stuck or high-centered on small bumps, roots, or uneven ground.
|
Chassis Ground Clearance / Traction Issue | View Details |
| – |
Robot mower is excessively noisy during operation, with grinding or rattling sounds from underneath.
|
Mechanical Noise from Blade Deck or Drive Train | View Details |
| – |
Robot mower is leaking oil or grease from the wheel area onto the lawn.
|
Drive Gearbox Seal Failure | View Details |
| – |
Robot mower leaves clumps of grass and the cut lawn looks ragged or torn rather than cleanly cut.
|
Poor Cut Quality / Dull Blades | View Details |
| – |
Robot mower leaves uncut strips of grass and misses areas, even though it runs regularly.
|
Uneven Cutting Pattern / Coverage Issue | View Details |
| – |
Robot mower occasionally shuts off completely in the middle of the lawn with no error code on restart.
|
Intermittent Power Loss | View Details |
| – |
Robot mower vibrates excessively and bounces while mowing, even on relatively smooth lawns.
|
Excessive Vibration from Cutting System | View Details |
| – |
Robot mower's blades occasionally strike the ground or scalp the lawn, leaving bare patches.
|
Incorrect Cutting Height / Deck Level | View Details |
| – |
Robot mower's boundary wire frequently breaks or loses connection, causing repeated boundary-related errors.
|
Chronic Boundary Wire Failure | View Details |
| – |
Robot mower's clock or schedule resets frequently, causing missed or random mowing times.
|
Real-Time Clock / Backup Power Issue | View Details |
| – |
Robot mower's display is blank or very dim, but the mower still appears to operate when scheduled.
|
Display Backlight / LCD Failure | View Details |
| – |
Robot mower's display or control panel does not respond to button presses, though the mower powers on.
|
Keypad / Control Panel Failure | View Details |
| – |
Robot mower's front caster or support wheel does not swivel freely, causing poor turning and scuffing.
|
Seized Front Caster / Support Wheel | View Details |
| – |
Robot mower's rain sensor triggers too easily or not at all, causing mowing at inappropriate times.
|
Rain Sensor Miscalibration | View Details |
No matching codes found
Advertisements