Yard Force
Yard Force Robot Lawnmowers 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 mower will not start mowing; display shows E1 shortly after pressing START.
Lift Sensor Triggered / Mower Lifted
E10
Robot mower displays E10 and will not start; often after storage or long inactivity.
Battery Communication / BMS Error
E11
Robot mower shows E11 and stops; may coincide with erratic movement or inability to follow boundary wire.
Magnetic / Boundary Sensor Fault
E12
Robot mower displays E12 and stops; often associated with sudden shutdowns or restarts.
Main PCB Overcurrent / Internal Electronics Fault
E13
Robot mower shows E13 and refuses to start; display may indicate "PIN" or security warning.
PIN Code / Security Lock Error
E14
Robot mower displays E14 and stops; may coincide with GPS or app connectivity issues on models with smart features.
Communication Error (Module to Main PCB)
E15
Robot mower shows E15 and stops; often when reversing or turning.
Wheel Encoder / Speed Sensor Error
E16
Robot mower displays E16 and stops; may occur when the cover is opened.
Cover / Hood Open Sensor Error
E17
Robot mower shows E17 and stops; may coincide with very high or low ambient temperatures.
Temperature Sensor Error / Overtemperature
E18
Robot mower displays E18 and stops; may occur when the front of the mower is hanging over an edge.
Front Lift / Drop Sensor Error
E19
Robot mower shows E19 and stops; may be associated with app control or remote commands failing.
Remote Control / App Command Error
E2
Robot mower stops and displays E2; blades do not spin when mowing should start.
Tilt Sensor Activated / Excessive Incline
E20
Robot mower displays E20 and stops; may occur when the mower is stuck in a narrow passage.
Stuck / Trapped Detection Error
E3
Robot mower stops suddenly, display shows E3, blades stop and mower may be stuck against an obstacle.
Collision / Bumper Sensor Fault
E4
Robot mower displays E4 and will not start; often occurs when trying to leave the charging station.
Boundary Wire Signal Lost / No Loop Signal
E5
Robot mower shows E5 and stops; usually when trying to dock or leave the charging station.
Charging Station Alignment / Docking Error
E6
Robot mower displays E6 and stops; blades do not rotate and a grinding or blocked sound may be heard.
Blade Motor Overload / Cutting Disc Blocked
E7
Robot mower shows E7 and stops; one or more wheels may not be turning.
Drive Motor Overload / Wheel Blocked
E8
Robot mower displays E8 and refuses to start; often after rain or washing.
Rain Sensor / Moisture Detected
E9
Robot mower shows E9 and stops; may occur randomly during operation.
Battery Voltage Error / Battery Protection Triggered
Symptom
Robot mower blades continue spinning for an unusually long time after being lifted or tilted.
Delayed Blade Stop / Safety Circuit Degradation
Symptom
Robot mower cuts unevenly, leaving scalped patches and tall patches.
Uneven Cutting Height / Deck Tilt
Symptom
Robot mower does not start at all; no display, no LEDs, completely dead.
No Power / Dead Mower
Symptom
Robot mower frequently loses wireless connection to the Yard Force app but continues mowing.
Unstable Connectivity (Non-critical)
Symptom
Robot mower front wheels do not swivel; mower drags or scrapes when turning.
Seized Front Caster Wheels
Symptom
Robot mower gets stuck frequently on small bumps, roots, or uneven ground.
Poor Traction / Ground Clearance Issue
Symptom
Robot mower is not returning to the charging station and stops with low battery somewhere in the yard (no specific code).
Homing / Docking Navigation Failure
Symptom
Robot mower is very noisy during operation; grinding or rattling sounds from underneath.
Mechanical Noise / Worn Bearings
Symptom
Robot mower leaves the lawn area and crosses the boundary wire.
Boundary Detection Failure (Mechanical/Installation)
Symptom
Robot mower leaves uncut strips of grass or misses areas regularly.
Poor Coverage / Navigation Pattern Issue
Symptom
Robot mower occasionally shuts down when hitting bumps, then restarts when moved.
Shock-Induced Power Interruption
Symptom
Robot mower runs but does not cut grass; blades are not spinning though the mower moves around.
Blade Drive Failure
Symptom
Robot mower smells of burnt plastic or electronics during or after operation.
Overheating / Electrical Burn
Symptom
Robot mower starts but stops after a few seconds without any error code.
Intermittent Power Loss / Loose Connection
Symptom
Robot mower vibrates excessively or bounces while mowing.
Excessive Vibration / Imbalanced Cutting System
Symptom
Robot mower wheels spin but the mower does not move or moves very slowly.
Loss of Traction / Drive Coupling Failure
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E1 |
Robot mower will not start mowing; display shows E1 shortly after pressing START.
|
Lift Sensor Triggered / Mower Lifted | View Details |
| E10 |
Robot mower displays E10 and will not start; often after storage or long inactivity.
|
Battery Communication / BMS Error | View Details |
| E11 |
Robot mower shows E11 and stops; may coincide with erratic movement or inability to follow boundary wire.
|
Magnetic / Boundary Sensor Fault | View Details |
| E12 |
Robot mower displays E12 and stops; often associated with sudden shutdowns or restarts.
|
Main PCB Overcurrent / Internal Electronics Fault | View Details |
| E13 |
Robot mower shows E13 and refuses to start; display may indicate "PIN" or security warning.
|
PIN Code / Security Lock Error | View Details |
| E14 |
Robot mower displays E14 and stops; may coincide with GPS or app connectivity issues on models with smart features.
|
Communication Error (Module to Main PCB) | View Details |
| E15 |
Robot mower shows E15 and stops; often when reversing or turning.
|
Wheel Encoder / Speed Sensor Error | View Details |
| E16 |
Robot mower displays E16 and stops; may occur when the cover is opened.
|
Cover / Hood Open Sensor Error | View Details |
| E17 |
Robot mower shows E17 and stops; may coincide with very high or low ambient temperatures.
|
Temperature Sensor Error / Overtemperature | View Details |
| E18 |
Robot mower displays E18 and stops; may occur when the front of the mower is hanging over an edge.
|
Front Lift / Drop Sensor Error | View Details |
| E19 |
Robot mower shows E19 and stops; may be associated with app control or remote commands failing.
|
Remote Control / App Command Error | View Details |
| E2 |
Robot mower stops and displays E2; blades do not spin when mowing should start.
|
Tilt Sensor Activated / Excessive Incline | View Details |
| E20 |
Robot mower displays E20 and stops; may occur when the mower is stuck in a narrow passage.
|
Stuck / Trapped Detection Error | View Details |
| E3 |
Robot mower stops suddenly, display shows E3, blades stop and mower may be stuck against an obstacle.
|
Collision / Bumper Sensor Fault | View Details |
| E4 |
Robot mower displays E4 and will not start; often occurs when trying to leave the charging station.
|
Boundary Wire Signal Lost / No Loop Signal | View Details |
| E5 |
Robot mower shows E5 and stops; usually when trying to dock or leave the charging station.
|
Charging Station Alignment / Docking Error | View Details |
| E6 |
Robot mower displays E6 and stops; blades do not rotate and a grinding or blocked sound may be heard.
|
Blade Motor Overload / Cutting Disc Blocked | View Details |
| E7 |
Robot mower shows E7 and stops; one or more wheels may not be turning.
|
Drive Motor Overload / Wheel Blocked | View Details |
| E8 |
Robot mower displays E8 and refuses to start; often after rain or washing.
|
Rain Sensor / Moisture Detected | View Details |
| E9 |
Robot mower shows E9 and stops; may occur randomly during operation.
|
Battery Voltage Error / Battery Protection Triggered | View Details |
| – |
Robot mower blades continue spinning for an unusually long time after being lifted or tilted.
|
Delayed Blade Stop / Safety Circuit Degradation | View Details |
| – |
Robot mower cuts unevenly, leaving scalped patches and tall patches.
|
Uneven Cutting Height / Deck Tilt | View Details |
| – |
Robot mower does not start at all; no display, no LEDs, completely dead.
|
No Power / Dead Mower | View Details |
| – |
Robot mower frequently loses wireless connection to the Yard Force app but continues mowing.
|
Unstable Connectivity (Non-critical) | View Details |
| – |
Robot mower front wheels do not swivel; mower drags or scrapes when turning.
|
Seized Front Caster Wheels | View Details |
| – |
Robot mower gets stuck frequently on small bumps, roots, or uneven ground.
|
Poor Traction / Ground Clearance Issue | View Details |
| – |
Robot mower is not returning to the charging station and stops with low battery somewhere in the yard (no specific code).
|
Homing / Docking Navigation Failure | View Details |
| – |
Robot mower is very noisy during operation; grinding or rattling sounds from underneath.
|
Mechanical Noise / Worn Bearings | View Details |
| – |
Robot mower leaves the lawn area and crosses the boundary wire.
|
Boundary Detection Failure (Mechanical/Installation) | View Details |
| – |
Robot mower leaves uncut strips of grass or misses areas regularly.
|
Poor Coverage / Navigation Pattern Issue | View Details |
| – |
Robot mower occasionally shuts down when hitting bumps, then restarts when moved.
|
Shock-Induced Power Interruption | View Details |
| – |
Robot mower runs but does not cut grass; blades are not spinning though the mower moves around.
|
Blade Drive Failure | View Details |
| – |
Robot mower smells of burnt plastic or electronics during or after operation.
|
Overheating / Electrical Burn | View Details |
| – |
Robot mower starts but stops after a few seconds without any error code.
|
Intermittent Power Loss / Loose Connection | View Details |
| – |
Robot mower vibrates excessively or bounces while mowing.
|
Excessive Vibration / Imbalanced Cutting System | View Details |
| – |
Robot mower wheels spin but the mower does not move or moves very slowly.
|
Loss of Traction / Drive Coupling Failure | View Details |
No matching codes found
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