Hecht
Hecht 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 power‑on.
Emergency Stop / Lift Sensor Triggered
E10
Robot mower displays E10 and stops; often when trying to dock or leave the station.
Charging Station Alignment / Docking Error
E11
Robot mower shows E11; display may indicate wheel lift or wheel off ground.
Wheel Lift Sensor Activated
E12
Robot mower displays E12; unit may not respond to keypad or stops when buttons are pressed.
Keypad / Control Panel Communication Error
E13
Robot mower shows E13 and stops; often when reversing or turning.
Left Drive Motor Fault
E14
Robot mower shows E14 and stops; often when moving forward on straight sections.
Right Drive Motor Fault
E15
Robot mower displays E15; may indicate time/date or memory error on some models.
Internal Clock / Memory Error
E16
Robot mower shows E16; may be accompanied by message about outside working area.
Out of Boundary / No Loop Signal at Mower
E17
Robot mower displays E17; often related to PIN code or theft protection.
Security / PIN Code Error
E18
Robot mower shows E18 and stops; may indicate overtemperature.
Overtemperature Protection
E19
Robot mower displays E19; may be associated with blade speed or RPM error.
Blade Motor Speed Sensor Fault
E2
Robot mower stops shortly after starting and displays E2; blades do not spin.
Blade Motor Overload / Blockage
E20
Robot mower shows E20; may indicate generic system error or internal fault.
General System Fault
E3
Robot mower stops and displays E3; often occurs when turning or on uneven ground.
Tilt Sensor / Rollover Protection Activated
E4
Robot mower displays E4 and stops; often near the boundary wire or when trying to dock.
Boundary Wire Signal Lost
E5
Robot mower shows E5 and refuses to start mowing; often after rain or washing.
Rain Sensor / Moisture Protection Triggered
E6
Robot mower displays E6 and stops; one or both drive wheels do not turn.
Drive Motor Overload / Stall
E7
Robot mower shows E7 and will not start; often after battery replacement or long storage.
Battery Voltage Out of Range
E8
Robot mower displays E8; unit may shut down unexpectedly during operation.
Overcurrent / Short Circuit Protection
E9
Robot mower shows E9 and refuses to start; often after impact or collision.
Bumper / Collision Sensor Fault
Symptom
Robot mower body feels loose; excessive vibration and rattling during operation.
Loose Chassis / Structural Fasteners
Symptom
Robot mower display works but buttons do not respond or respond intermittently.
Keypad Contact Wear / Moisture Ingress
Symptom
Robot mower does not charge properly; battery percentage does not increase or increases very slowly.
Charging System Fault
Symptom
Robot mower does not detect rain; continues mowing in heavy rain despite rain sensor feature.
Rain Sensor Not Responding
Symptom
Robot mower does not start at all; no display, no lights, completely dead.
No Power / Dead Unit
Symptom
Robot mower emits a burning smell or visible smoke from vents.
Severe Electrical Overheating
Symptom
Robot mower frequently gets stuck on small bumps, roots, or lawn edges.
Chassis Ground Clearance / Wheel Traction Issue
Symptom
Robot mower frequently reports being lifted or tilted even on flat ground (but without a specific code shown).
False Lift/Tilt Detection
Symptom
Robot mower is very noisy while cutting; grinding or rattling sounds from underneath.
Blade Disc / Bearing Wear
Symptom
Robot mower leaves uncut grass tufts and the lawn looks torn or brown at the tips.
Dull or Damaged Blades
Symptom
Robot mower makes loud clicking or grinding noises from one wheel while driving.
Drive Gearbox Wear / Damage
Symptom
Robot mower occasionally reboots by itself; display flickers and restarts.
Power Supply Instability
Symptom
Robot mower runs but does not return to the charging station; eventually stops with empty battery somewhere in the lawn.
Docking / Homing Failure
Symptom
Robot mower runs but leaves uncut strips of grass; mowing pattern seems random and coverage is poor.
Poor Cutting Coverage / Navigation Inefficiency
Symptom
Robot mower shows condensation or water droplets inside the display window.
Moisture Ingress into Control Panel
Symptom
Robot mower starts but stops after a few minutes without any error code; may restart again and repeat.
Intermittent Power Loss
Symptom
Robot mower stops with blades off but drive wheels still moving briefly, then shuts down.
Blade Motor Overheating / Protection Without Code
Symptom
Robot mower's boundary wire LED on the charging station blinks or changes color, but mower shows no specific code and behaves erratically near the wire.
Boundary Wire Partial Break / High Resistance
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E1 |
Robot mower will not start mowing; display shows E1 shortly after power‑on.
|
Emergency Stop / Lift Sensor Triggered | View Details |
| E10 |
Robot mower displays E10 and stops; often when trying to dock or leave the station.
|
Charging Station Alignment / Docking Error | View Details |
| E11 |
Robot mower shows E11; display may indicate wheel lift or wheel off ground.
|
Wheel Lift Sensor Activated | View Details |
| E12 |
Robot mower displays E12; unit may not respond to keypad or stops when buttons are pressed.
|
Keypad / Control Panel Communication Error | View Details |
| E13 |
Robot mower shows E13 and stops; often when reversing or turning.
|
Left Drive Motor Fault | View Details |
| E14 |
Robot mower shows E14 and stops; often when moving forward on straight sections.
|
Right Drive Motor Fault | View Details |
| E15 |
Robot mower displays E15; may indicate time/date or memory error on some models.
|
Internal Clock / Memory Error | View Details |
| E16 |
Robot mower shows E16; may be accompanied by message about outside working area.
|
Out of Boundary / No Loop Signal at Mower | View Details |
| E17 |
Robot mower displays E17; often related to PIN code or theft protection.
|
Security / PIN Code Error | View Details |
| E18 |
Robot mower shows E18 and stops; may indicate overtemperature.
|
Overtemperature Protection | View Details |
| E19 |
Robot mower displays E19; may be associated with blade speed or RPM error.
|
Blade Motor Speed Sensor Fault | View Details |
| E2 |
Robot mower stops shortly after starting and displays E2; blades do not spin.
|
Blade Motor Overload / Blockage | View Details |
| E20 |
Robot mower shows E20; may indicate generic system error or internal fault.
|
General System Fault | View Details |
| E3 |
Robot mower stops and displays E3; often occurs when turning or on uneven ground.
|
Tilt Sensor / Rollover Protection Activated | View Details |
| E4 |
Robot mower displays E4 and stops; often near the boundary wire or when trying to dock.
|
Boundary Wire Signal Lost | View Details |
| E5 |
Robot mower shows E5 and refuses to start mowing; often after rain or washing.
|
Rain Sensor / Moisture Protection Triggered | View Details |
| E6 |
Robot mower displays E6 and stops; one or both drive wheels do not turn.
|
Drive Motor Overload / Stall | View Details |
| E7 |
Robot mower shows E7 and will not start; often after battery replacement or long storage.
|
Battery Voltage Out of Range | View Details |
| E8 |
Robot mower displays E8; unit may shut down unexpectedly during operation.
|
Overcurrent / Short Circuit Protection | View Details |
| E9 |
Robot mower shows E9 and refuses to start; often after impact or collision.
|
Bumper / Collision Sensor Fault | View Details |
| – |
Robot mower body feels loose; excessive vibration and rattling during operation.
|
Loose Chassis / Structural Fasteners | View Details |
| – |
Robot mower display works but buttons do not respond or respond intermittently.
|
Keypad Contact Wear / Moisture Ingress | View Details |
| – |
Robot mower does not charge properly; battery percentage does not increase or increases very slowly.
|
Charging System Fault | View Details |
| – |
Robot mower does not detect rain; continues mowing in heavy rain despite rain sensor feature.
|
Rain Sensor Not Responding | View Details |
| – |
Robot mower does not start at all; no display, no lights, completely dead.
|
No Power / Dead Unit | View Details |
| – |
Robot mower emits a burning smell or visible smoke from vents.
|
Severe Electrical Overheating | View Details |
| – |
Robot mower frequently gets stuck on small bumps, roots, or lawn edges.
|
Chassis Ground Clearance / Wheel Traction Issue | View Details |
| – |
Robot mower frequently reports being lifted or tilted even on flat ground (but without a specific code shown).
|
False Lift/Tilt Detection | View Details |
| – |
Robot mower is very noisy while cutting; grinding or rattling sounds from underneath.
|
Blade Disc / Bearing Wear | View Details |
| – |
Robot mower leaves uncut grass tufts and the lawn looks torn or brown at the tips.
|
Dull or Damaged Blades | View Details |
| – |
Robot mower makes loud clicking or grinding noises from one wheel while driving.
|
Drive Gearbox Wear / Damage | View Details |
| – |
Robot mower occasionally reboots by itself; display flickers and restarts.
|
Power Supply Instability | View Details |
| – |
Robot mower runs but does not return to the charging station; eventually stops with empty battery somewhere in the lawn.
|
Docking / Homing Failure | View Details |
| – |
Robot mower runs but leaves uncut strips of grass; mowing pattern seems random and coverage is poor.
|
Poor Cutting Coverage / Navigation Inefficiency | View Details |
| – |
Robot mower shows condensation or water droplets inside the display window.
|
Moisture Ingress into Control Panel | View Details |
| – |
Robot mower starts but stops after a few minutes without any error code; may restart again and repeat.
|
Intermittent Power Loss | View Details |
| – |
Robot mower stops with blades off but drive wheels still moving briefly, then shuts down.
|
Blade Motor Overheating / Protection Without Code | View Details |
| – |
Robot mower's boundary wire LED on the charging station blinks or changes color, but mower shows no specific code and behaves erratically near the wire.
|
Boundary Wire Partial Break / High Resistance | View Details |
No matching codes found
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