Cedrus
Cedrus 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.
Emergency Stop / Lift Sensor Triggered
E02
Robot mower stops shortly after starting and displays E02; blades do not spin.
Blade Motor Overload / Stall
E03
Robot mower does not move forward or backward; display shows E03 when a mowing cycle is started.
Drive Motor Fault / Overcurrent
E04
Robot mower frequently stops and shows E04 when approaching the boundary wire; may reverse unexpectedly.
Boundary Wire Signal Lost / Weak
E05
Robot mower stops on slopes and displays E05; may also trigger when lifted at the front.
Tilt Sensor / Roll Sensor Error
E06
Robot mower cannot find or dock with the charging station; display shows E06 after searching.
Charging Station Not Found / Guide Signal Error
E07
Robot mower shows E07 and shuts down when attempting to charge on the station.
Charging Error / Battery Not Charging
E08
Robot mower display shows E08 and the unit will not power up fully; may shut down unexpectedly.
Battery Voltage Too Low / Deep Discharge
E09
Robot mower shows E09 and stops; may occur when reversing or turning.
Wheel Encoder / Speed Sensor Error
E10
Robot mower displays E10 and refuses to start; often after firmware update or long storage.
Main Control Board Communication Error
E11
Robot mower shows E11 and stops when encountering obstacles; bumper feels unresponsive.
Front Bumper / Collision Sensor Fault
E12
Robot mower displays E12 and stops; often occurs when the rain sensor area is wet or dirty.
Rain Sensor Error
E13
Robot mower shows E13 and stops; may be accompanied by unusual noises from inside the housing.
Internal Fan / Electronics Overheating
E14
Robot mower displays E14 and refuses to start; often after replacing the battery or main board.
Battery Identification / Communication Error
E15
Robot mower shows E15 and stops when the cutting height is adjusted or when mowing uneven ground.
Cutting Height Motor / Potentiometer Error
E16
Robot mower displays E16 and stops; may occur when reversing off the charging station.
Rear Lift / Handle Sensor Error
E17
Robot mower shows E17 and stops; often when operating near metal objects or buried cables.
Magnetic / Obstacle Sensor Interference
E18
Robot mower displays E18 and stops; may coincide with app connection issues on smart models.
Communication Module / GSM-WiFi Error
E19
Robot mower shows E19 and stops; often after hitting a solid obstacle or curb.
Chassis Impact / Gyro Alignment Error
E20
Robot mower displays E20 and will not start; often after water exposure or washing.
Moisture Ingress / Short Circuit Detected
Symptom
Robot mower cannot be found by the Cedrus mobile app via Bluetooth or Wi‑Fi.
Wireless Connectivity Issue
Symptom
Robot mower cuts unevenly, leaving scalped patches and tall tufts on bumpy lawns.
Uneven Cutting Height / Deck Leveling Issue
Symptom
Robot mower does not start according to the programmed schedule, but can be started manually.
Scheduling / Real-Time Clock Issue
Symptom
Robot mower does not wake up from winter storage; no lights or display when placed on the station.
Deep Storage / Power-Up Failure
Symptom
Robot mower emits a burning smell or hot plastic odor during or after mowing.
Overheating Component / Electrical Overload
Symptom
Robot mower frequently gets stuck on small obstacles, roots, or uneven ground without showing an error code.
Ground Clearance / Obstacle Handling Problem
Symptom
Robot mower is excessively noisy during operation, with grinding or rattling sounds.
Mechanical Noise from Blade Deck or Drive Train
Symptom
Robot mower leaves clumps of grass and the lawn looks messy after mowing.
Poor Mulching / Grass Discharge Issue
Symptom
Robot mower leaves tracks or wheel ruts in soft or wet grass.
Excessive Ground Pressure / Traction Issue
Symptom
Robot mower leaves uncut strips of grass and misses areas within the boundary.
Random Navigation Coverage Issue
Symptom
Robot mower occasionally runs outside the boundary wire area without showing a boundary error code.
Boundary Detection Sensitivity / Layout Problem
Symptom
Robot mower occasionally tips or lifts its front when climbing small obstacles, then stops.
Front Lift / Balance Problem
Symptom
Robot mower sometimes fails to return to the charging station and stops with an empty battery somewhere in the lawn.
Docking Reliability / Navigation to Base Issue
Symptom
Robot mower stops randomly with no error code and then resumes after a short time.
Intermittent Power / Loose Connection
Symptom
Robot mower vibrates excessively, shaking the chassis and leaving an uneven cut.
Imbalanced Blade Disc / Loose Components
Symptom
Robot mower's battery runtime is significantly reduced compared to previous seasons.
Battery Capacity Degradation
Symptom
Robot mower's blades continue to spin for an unusually long time after being lifted or stopped.
Blade Brake / Safety Delay Issue
Symptom
Robot mower's display or control panel is unresponsive or shows faded characters.
Control Panel / Display Failure
Symptom
Robot mower's front or rear lights (if equipped) do not work, but mowing is otherwise normal.
LED Lighting Circuit Failure
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Robot mower will not start mowing; display shows E01 immediately after power‑on.
|
Emergency Stop / Lift Sensor Triggered | View Details |
| E02 |
Robot mower stops shortly after starting and displays E02; blades do not spin.
|
Blade Motor Overload / Stall | View Details |
| E03 |
Robot mower does not move forward or backward; display shows E03 when a mowing cycle is started.
|
Drive Motor Fault / Overcurrent | View Details |
| E04 |
Robot mower frequently stops and shows E04 when approaching the boundary wire; may reverse unexpectedly.
|
Boundary Wire Signal Lost / Weak | View Details |
| E05 |
Robot mower stops on slopes and displays E05; may also trigger when lifted at the front.
|
Tilt Sensor / Roll Sensor Error | View Details |
| E06 |
Robot mower cannot find or dock with the charging station; display shows E06 after searching.
|
Charging Station Not Found / Guide Signal Error | View Details |
| E07 |
Robot mower shows E07 and shuts down when attempting to charge on the station.
|
Charging Error / Battery Not Charging | View Details |
| E08 |
Robot mower display shows E08 and the unit will not power up fully; may shut down unexpectedly.
|
Battery Voltage Too Low / Deep Discharge | View Details |
| E09 |
Robot mower shows E09 and stops; may occur when reversing or turning.
|
Wheel Encoder / Speed Sensor Error | View Details |
| E10 |
Robot mower displays E10 and refuses to start; often after firmware update or long storage.
|
Main Control Board Communication Error | View Details |
| E11 |
Robot mower shows E11 and stops when encountering obstacles; bumper feels unresponsive.
|
Front Bumper / Collision Sensor Fault | View Details |
| E12 |
Robot mower displays E12 and stops; often occurs when the rain sensor area is wet or dirty.
|
Rain Sensor Error | View Details |
| E13 |
Robot mower shows E13 and stops; may be accompanied by unusual noises from inside the housing.
|
Internal Fan / Electronics Overheating | View Details |
| E14 |
Robot mower displays E14 and refuses to start; often after replacing the battery or main board.
|
Battery Identification / Communication Error | View Details |
| E15 |
Robot mower shows E15 and stops when the cutting height is adjusted or when mowing uneven ground.
|
Cutting Height Motor / Potentiometer Error | View Details |
| E16 |
Robot mower displays E16 and stops; may occur when reversing off the charging station.
|
Rear Lift / Handle Sensor Error | View Details |
| E17 |
Robot mower shows E17 and stops; often when operating near metal objects or buried cables.
|
Magnetic / Obstacle Sensor Interference | View Details |
| E18 |
Robot mower displays E18 and stops; may coincide with app connection issues on smart models.
|
Communication Module / GSM-WiFi Error | View Details |
| E19 |
Robot mower shows E19 and stops; often after hitting a solid obstacle or curb.
|
Chassis Impact / Gyro Alignment Error | View Details |
| E20 |
Robot mower displays E20 and will not start; often after water exposure or washing.
|
Moisture Ingress / Short Circuit Detected | View Details |
| – |
Robot mower cannot be found by the Cedrus mobile app via Bluetooth or Wi‑Fi.
|
Wireless Connectivity Issue | View Details |
| – |
Robot mower cuts unevenly, leaving scalped patches and tall tufts on bumpy lawns.
|
Uneven Cutting Height / Deck Leveling Issue | View Details |
| – |
Robot mower does not start according to the programmed schedule, but can be started manually.
|
Scheduling / Real-Time Clock Issue | View Details |
| – |
Robot mower does not wake up from winter storage; no lights or display when placed on the station.
|
Deep Storage / Power-Up Failure | View Details |
| – |
Robot mower emits a burning smell or hot plastic odor during or after mowing.
|
Overheating Component / Electrical Overload | View Details |
| – |
Robot mower frequently gets stuck on small obstacles, roots, or uneven ground without showing an error code.
|
Ground Clearance / Obstacle Handling Problem | View Details |
| – |
Robot mower is excessively noisy during operation, with grinding or rattling sounds.
|
Mechanical Noise from Blade Deck or Drive Train | View Details |
| – |
Robot mower leaves clumps of grass and the lawn looks messy after mowing.
|
Poor Mulching / Grass Discharge Issue | View Details |
| – |
Robot mower leaves tracks or wheel ruts in soft or wet grass.
|
Excessive Ground Pressure / Traction Issue | View Details |
| – |
Robot mower leaves uncut strips of grass and misses areas within the boundary.
|
Random Navigation Coverage Issue | View Details |
| – |
Robot mower occasionally runs outside the boundary wire area without showing a boundary error code.
|
Boundary Detection Sensitivity / Layout Problem | View Details |
| – |
Robot mower occasionally tips or lifts its front when climbing small obstacles, then stops.
|
Front Lift / Balance Problem | View Details |
| – |
Robot mower sometimes fails to return to the charging station and stops with an empty battery somewhere in the lawn.
|
Docking Reliability / Navigation to Base Issue | View Details |
| – |
Robot mower stops randomly with no error code and then resumes after a short time.
|
Intermittent Power / Loose Connection | View Details |
| – |
Robot mower vibrates excessively, shaking the chassis and leaving an uneven cut.
|
Imbalanced Blade Disc / Loose Components | View Details |
| – |
Robot mower's battery runtime is significantly reduced compared to previous seasons.
|
Battery Capacity Degradation | View Details |
| – |
Robot mower's blades continue to spin for an unusually long time after being lifted or stopped.
|
Blade Brake / Safety Delay Issue | View Details |
| – |
Robot mower's display or control panel is unresponsive or shows faded characters.
|
Control Panel / Display Failure | View Details |
| – |
Robot mower's front or rear lights (if equipped) do not work, but mowing is otherwise normal.
|
LED Lighting Circuit Failure | View Details |
No matching codes found
Advertisements