Stiga
Stiga 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‑up.
Emergency Stop or Lift Sensor Triggered
E10
Robot mower shows E10 and stops near the boundary wire.
Loop Signal Out of Range or Distorted
E11
Robot mower displays E11 and does not move; sometimes after winter storage.
Wheel Encoder / Hall Sensor Failure
E12
Robot mower shows E12 and stops when blades should start spinning.
Blade Motor Speed Sensor / Tachometer Error
E13
Robot mower displays E13 and refuses to start; often after being left in rain or washed.
Rain Sensor or Moisture Detection Error
E14
Robot mower shows E14 and stops near the charging station, often when trying to dock.
Docking Alignment or Home Signal Error
E15
Robot mower displays E15 and will not start; keypad or display unresponsive.
Keypad / User Interface Communication Error
E16
Robot mower shows E16 and stops when reversing away from obstacles.
Rear Wheel Stall or Obstruction
E17
Robot mower displays E17 and stops shortly after starting a mowing cycle.
Current Sensor / Overcurrent Detection Fault
E18
Robot mower shows E18 and refuses to start; often after incorrect PIN attempts.
Security Lock / PIN Code Error
E19
Robot mower displays E19 and stops when approaching narrow passages.
Ultrasonic / Obstacle Sensor Error (if equipped)
E2
Robot mower stops and displays E2; blades do not spin.
Blade Motor Overload or Blockage
E20
Robot mower shows E20 and stops; often after long operation in hot weather.
Overtemperature Protection
E3
Robot mower displays E3 and stops shortly after leaving the charging station.
Wheel Motor Overcurrent or Blocked Drive Wheel
E4
Robot mower shows E4 and refuses to start; often occurs when placed away from the charging station.
No Loop Signal / Boundary Wire Not Detected
E5
Robot mower displays E5 and stops; often after hitting an obstacle or on uneven ground.
Tilt Sensor or Over‑Tilt Protection Activated
E6
Robot mower shows E6 and stops; often when reversing or turning.
Bumper / Collision Sensor Stuck or Faulty
E7
Robot mower displays E7 and will not charge when docked.
Charging Station Communication Error
E8
Robot mower shows E8 and stops randomly during operation.
Low Battery Voltage or Battery Protection Triggered
E9
Robot mower displays E9 immediately after power‑up; no movement.
Main Board Internal Error
Symptom
Robot mower cuts out when it rains, even though the rain sensor is disabled in settings.
Water Ingress / Moisture Short
Symptom
Robot mower does not follow the programmed schedule and only starts when manually commanded.
Scheduling / Timer Configuration Fault
Symptom
Robot mower does not return to the charging station and stops with an empty battery somewhere in the garden (no specific error code).
Navigation / Home Finding Failure
Symptom
Robot mower frequently gets stuck or spins its wheels without moving forward.
Loss of Traction / Wheel Slippage
Symptom
Robot mower frequently reports that it is outside the working area even though it is inside the boundary (no specific numeric code shown).
Boundary Signal Sensitivity / Misinterpretation
Symptom
Robot mower is very noisy during operation; grinding or rattling sounds from underneath.
Mechanical Noise from Blade Motor or Bearings
Symptom
Robot mower leaves clumps of grass and the underside is heavily packed with wet grass.
Deck Clogging and Poor Discharge
Symptom
Robot mower leaves the boundary area and escapes the lawn without any error code.
Boundary Containment Failure
Symptom
Robot mower leaves uncut strips of grass and misses areas, even though it runs regularly.
Uneven Cutting Pattern / Poor Coverage
Symptom
Robot mower produces a burning smell during operation.
Overheating Motor or Electrical Component
Symptom
Robot mower scalps the lawn, leaving brown patches where the soil is visible.
Cutting Height Too Low / Uneven Lawn
Symptom
Robot mower starts but stops after a few minutes without an error code and can be restarted again.
Intermittent Power Loss or Loose Connection
Symptom
Robot mower vibrates excessively and shakes while mowing.
Imbalanced Cutting System
Symptom
Robot mower will not start at all; no display or LEDs, even when placed in the charging station.
No Power / Dead Mower
Symptom
Robot mower’s blades do not spin, but the mower drives around as if mowing.
Blade Drive Failure without Error Code
Symptom
Robot mower’s display fogs up or shows condensation inside the screen.
Moisture Ingress in Display Module
Symptom
Robot mower’s front caster wheel wobbles or jams, causing poor steering and track marks.
Front Caster Wheel Wear or Blockage
Symptom
Robot mower’s time and date reset frequently, causing schedule issues.
Real‑Time Clock / Backup Power Issue
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E1 |
Robot mower will not start mowing; display shows E1 shortly after power‑up.
|
Emergency Stop or Lift Sensor Triggered | View Details |
| E10 |
Robot mower shows E10 and stops near the boundary wire.
|
Loop Signal Out of Range or Distorted | View Details |
| E11 |
Robot mower displays E11 and does not move; sometimes after winter storage.
|
Wheel Encoder / Hall Sensor Failure | View Details |
| E12 |
Robot mower shows E12 and stops when blades should start spinning.
|
Blade Motor Speed Sensor / Tachometer Error | View Details |
| E13 |
Robot mower displays E13 and refuses to start; often after being left in rain or washed.
|
Rain Sensor or Moisture Detection Error | View Details |
| E14 |
Robot mower shows E14 and stops near the charging station, often when trying to dock.
|
Docking Alignment or Home Signal Error | View Details |
| E15 |
Robot mower displays E15 and will not start; keypad or display unresponsive.
|
Keypad / User Interface Communication Error | View Details |
| E16 |
Robot mower shows E16 and stops when reversing away from obstacles.
|
Rear Wheel Stall or Obstruction | View Details |
| E17 |
Robot mower displays E17 and stops shortly after starting a mowing cycle.
|
Current Sensor / Overcurrent Detection Fault | View Details |
| E18 |
Robot mower shows E18 and refuses to start; often after incorrect PIN attempts.
|
Security Lock / PIN Code Error | View Details |
| E19 |
Robot mower displays E19 and stops when approaching narrow passages.
|
Ultrasonic / Obstacle Sensor Error (if equipped) | View Details |
| E2 |
Robot mower stops and displays E2; blades do not spin.
|
Blade Motor Overload or Blockage | View Details |
| E20 |
Robot mower shows E20 and stops; often after long operation in hot weather.
|
Overtemperature Protection | View Details |
| E3 |
Robot mower displays E3 and stops shortly after leaving the charging station.
|
Wheel Motor Overcurrent or Blocked Drive Wheel | View Details |
| E4 |
Robot mower shows E4 and refuses to start; often occurs when placed away from the charging station.
|
No Loop Signal / Boundary Wire Not Detected | View Details |
| E5 |
Robot mower displays E5 and stops; often after hitting an obstacle or on uneven ground.
|
Tilt Sensor or Over‑Tilt Protection Activated | View Details |
| E6 |
Robot mower shows E6 and stops; often when reversing or turning.
|
Bumper / Collision Sensor Stuck or Faulty | View Details |
| E7 |
Robot mower displays E7 and will not charge when docked.
|
Charging Station Communication Error | View Details |
| E8 |
Robot mower shows E8 and stops randomly during operation.
|
Low Battery Voltage or Battery Protection Triggered | View Details |
| E9 |
Robot mower displays E9 immediately after power‑up; no movement.
|
Main Board Internal Error | View Details |
| – |
Robot mower cuts out when it rains, even though the rain sensor is disabled in settings.
|
Water Ingress / Moisture Short | View Details |
| – |
Robot mower does not follow the programmed schedule and only starts when manually commanded.
|
Scheduling / Timer Configuration Fault | View Details |
| – |
Robot mower does not return to the charging station and stops with an empty battery somewhere in the garden (no specific error code).
|
Navigation / Home Finding Failure | View Details |
| – |
Robot mower frequently gets stuck or spins its wheels without moving forward.
|
Loss of Traction / Wheel Slippage | View Details |
| – |
Robot mower frequently reports that it is outside the working area even though it is inside the boundary (no specific numeric code shown).
|
Boundary Signal Sensitivity / Misinterpretation | View Details |
| – |
Robot mower is very noisy during operation; grinding or rattling sounds from underneath.
|
Mechanical Noise from Blade Motor or Bearings | View Details |
| – |
Robot mower leaves clumps of grass and the underside is heavily packed with wet grass.
|
Deck Clogging and Poor Discharge | View Details |
| – |
Robot mower leaves the boundary area and escapes the lawn without any error code.
|
Boundary Containment Failure | View Details |
| – |
Robot mower leaves uncut strips of grass and misses areas, even though it runs regularly.
|
Uneven Cutting Pattern / Poor Coverage | View Details |
| – |
Robot mower produces a burning smell during operation.
|
Overheating Motor or Electrical Component | View Details |
| – |
Robot mower scalps the lawn, leaving brown patches where the soil is visible.
|
Cutting Height Too Low / Uneven Lawn | View Details |
| – |
Robot mower starts but stops after a few minutes without an error code and can be restarted again.
|
Intermittent Power Loss or Loose Connection | View Details |
| – |
Robot mower vibrates excessively and shakes while mowing.
|
Imbalanced Cutting System | View Details |
| – |
Robot mower will not start at all; no display or LEDs, even when placed in the charging station.
|
No Power / Dead Mower | View Details |
| – |
Robot mower’s blades do not spin, but the mower drives around as if mowing.
|
Blade Drive Failure without Error Code | View Details |
| – |
Robot mower’s display fogs up or shows condensation inside the screen.
|
Moisture Ingress in Display Module | View Details |
| – |
Robot mower’s front caster wheel wobbles or jams, causing poor steering and track marks.
|
Front Caster Wheel Wear or Blockage | View Details |
| – |
Robot mower’s time and date reset frequently, causing schedule issues.
|
Real‑Time Clock / Backup Power Issue | View Details |
No matching codes found
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