ABL
ABL EV Home Chargers Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E01
Charging session does not start; vehicle shows ‘charging error’ and ABL wallbox displays E01 shortly after plugging in.
Proximity / Pilot Signal Communication Fault
E02
ABL EV charger shows E02 and refuses to start charging; vehicle may not detect the charger at all.
Vehicle Not Detected / EVSE Handshake Failure
E03
Charging stops or will not start; ABL charger displays E03 and status LED may flash red.
Ground Fault / Residual Current Detection Trip
E04
ABL wallbox shows E04 and refuses to charge; may occur immediately after plugging in or during self‑test.
Protective Earth (PE) Fault / Missing Ground
E05
ABL EV charger displays E05; charging does not start or stops shortly after initiation.
Contactor / Power Relay Feedback Fault
E06
ABL charger shows E06 and does not allow charging; often associated with incorrect supply voltage.
Supply Voltage Out of Range
E07
ABL wallbox displays E07; charging is disabled and LEDs may flash in a fault pattern.
Overtemperature Protection Trip
E08
ABL charger shows E08 and refuses to start charging; may be logged as an insulation or isolation fault.
Insulation Resistance Fault / EV Isolation Error
E09
ABL EV charger displays E09; charging is blocked and may be accompanied by a loud click from inside the unit.
Short Circuit or Overcurrent Protection Trip
E10
ABL charger shows E10; charging is disabled and the unit may reboot repeatedly.
Internal Power Supply / Low Voltage on Control Electronics
E11
ABL wallbox displays E11; charging is blocked and the unit may indicate a phase imbalance.
Phase Loss / Phase Asymmetry Fault
E12
ABL charger shows E12; charging is disabled and the unit may indicate a configuration or DIP switch error.
Configuration / Parameter Error
E13
ABL EV charger displays E13; charging is blocked and the unit may show a communication error with the metering module.
Internal Energy Meter Communication Fault
E14
ABL charger shows E14; charging is disabled and the unit may indicate an RFID or access control error.
RFID Reader / Access Control Fault
E15
ABL wallbox displays E15; charging is blocked and the unit may show a network or backend communication error.
OCPP / Backend Communication Fault
E16
ABL charger shows E16; charging is disabled and the unit may indicate a load management or master/slave error.
Load Management / Master-Slave Communication Fault
E17
ABL EV charger displays E17; charging is blocked and the unit may indicate a current sensor error.
Current Measurement / CT Sensor Fault
E18
ABL charger shows E18; charging is disabled and the unit may indicate a DC residual current sensor error.
DC Residual Current Sensor Fault
E19
ABL wallbox displays E19; charging is blocked and the unit may indicate a door or cover interlock error (on models with service switches).
Cover Interlock / Service Switch Fault
E20
ABL charger shows E20; charging is disabled and the unit may indicate a firmware or software integrity error.
Firmware Integrity / Bootloader Error
Symptom
ABL charger does not respond to configuration changes made via app or web interface, or changes are lost after reboot.
Configuration Storage / Non-Volatile Memory Fault
Symptom
ABL charger emits a noticeable plastic or burning smell during or after charging.
Overheating / Component Degradation
Symptom
ABL charger hums or buzzes loudly during charging, louder than normal transformer or contactor noise.
Excessive Electrical Noise / Vibration
Symptom
ABL charger or cable becomes very hot to the touch during normal charging, even at rated current.
Overheating of Connectors or Internal Wiring
Symptom
ABL charger trips the upstream RCD or breaker as soon as charging starts, but no specific error code is shown on the charger.
Nuisance Tripping / Upstream Protection Trip
Symptom
ABL charger’s communication with backend or app is unstable; sometimes online, sometimes offline, without a specific error code.
Unstable Network Connectivity
Symptom
ABL charger’s front display or LED bar is dim, flickering, or partially not working, but charging still functions.
Display / LED Indicator Fault
Symptom
ABL charger’s front LEDs are off and the unit appears completely dead; no response when vehicle is plugged in.
No Power / Dead Unit
Symptom
ABL charger’s front LEDs blink in an undocumented pattern and the unit occasionally reboots, especially during storms or grid disturbances.
Grid Disturbance Sensitivity / Brownout Behavior
Symptom
ABL charger’s internal clock or scheduled charging features do not operate at the correct time, causing unexpected start/stop times.
Real-Time Clock / Scheduling Fault
Symptom
ABL charger’s internal fan (on models equipped) runs very loudly or continuously, even at low load.
Cooling Fan Overrun / Noise
Symptom
ABL charger’s RFID reader intermittently fails to recognize cards; sometimes works after multiple attempts.
Intermittent RFID Reading Fault
Symptom
ABL charger’s tethered cable (if equipped) shows cracks, kinks, or damaged outer sheath.
Mechanical Cable Damage
Symptom
ABL charger’s Type 2 socket flap or mechanical lock is stiff, does not close properly, or fails to lock the plug.
Mechanical Socket / Locking Mechanism Fault
Symptom
Charging starts but repeatedly stops after a few minutes without a clear error code; vehicle may show ‘charging interrupted’.
Intermittent Charging Interruption
Symptom
Vehicle plugged in but charging does not start; no error code shown, LEDs remain steady or show ‘ready’ state.
No Charge Start Without Visible Error
Symptom
Water or condensation visible inside the ABL charger housing or around the Type 2 socket; intermittent faults occur in wet weather.
Moisture Ingress / IP Seal Failure
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Charging session does not start; vehicle shows ‘charging error’ and ABL wallbox displays E01 shortly after plugging in.
|
Proximity / Pilot Signal Communication Fault | View Details |
| E02 |
ABL EV charger shows E02 and refuses to start charging; vehicle may not detect the charger at all.
|
Vehicle Not Detected / EVSE Handshake Failure | View Details |
| E03 |
Charging stops or will not start; ABL charger displays E03 and status LED may flash red.
|
Ground Fault / Residual Current Detection Trip | View Details |
| E04 |
ABL wallbox shows E04 and refuses to charge; may occur immediately after plugging in or during self‑test.
|
Protective Earth (PE) Fault / Missing Ground | View Details |
| E05 |
ABL EV charger displays E05; charging does not start or stops shortly after initiation.
|
Contactor / Power Relay Feedback Fault | View Details |
| E06 |
ABL charger shows E06 and does not allow charging; often associated with incorrect supply voltage.
|
Supply Voltage Out of Range | View Details |
| E07 |
ABL wallbox displays E07; charging is disabled and LEDs may flash in a fault pattern.
|
Overtemperature Protection Trip | View Details |
| E08 |
ABL charger shows E08 and refuses to start charging; may be logged as an insulation or isolation fault.
|
Insulation Resistance Fault / EV Isolation Error | View Details |
| E09 |
ABL EV charger displays E09; charging is blocked and may be accompanied by a loud click from inside the unit.
|
Short Circuit or Overcurrent Protection Trip | View Details |
| E10 |
ABL charger shows E10; charging is disabled and the unit may reboot repeatedly.
|
Internal Power Supply / Low Voltage on Control Electronics | View Details |
| E11 |
ABL wallbox displays E11; charging is blocked and the unit may indicate a phase imbalance.
|
Phase Loss / Phase Asymmetry Fault | View Details |
| E12 |
ABL charger shows E12; charging is disabled and the unit may indicate a configuration or DIP switch error.
|
Configuration / Parameter Error | View Details |
| E13 |
ABL EV charger displays E13; charging is blocked and the unit may show a communication error with the metering module.
|
Internal Energy Meter Communication Fault | View Details |
| E14 |
ABL charger shows E14; charging is disabled and the unit may indicate an RFID or access control error.
|
RFID Reader / Access Control Fault | View Details |
| E15 |
ABL wallbox displays E15; charging is blocked and the unit may show a network or backend communication error.
|
OCPP / Backend Communication Fault | View Details |
| E16 |
ABL charger shows E16; charging is disabled and the unit may indicate a load management or master/slave error.
|
Load Management / Master-Slave Communication Fault | View Details |
| E17 |
ABL EV charger displays E17; charging is blocked and the unit may indicate a current sensor error.
|
Current Measurement / CT Sensor Fault | View Details |
| E18 |
ABL charger shows E18; charging is disabled and the unit may indicate a DC residual current sensor error.
|
DC Residual Current Sensor Fault | View Details |
| E19 |
ABL wallbox displays E19; charging is blocked and the unit may indicate a door or cover interlock error (on models with service switches).
|
Cover Interlock / Service Switch Fault | View Details |
| E20 |
ABL charger shows E20; charging is disabled and the unit may indicate a firmware or software integrity error.
|
Firmware Integrity / Bootloader Error | View Details |
| – |
ABL charger does not respond to configuration changes made via app or web interface, or changes are lost after reboot.
|
Configuration Storage / Non-Volatile Memory Fault | View Details |
| – |
ABL charger emits a noticeable plastic or burning smell during or after charging.
|
Overheating / Component Degradation | View Details |
| – |
ABL charger hums or buzzes loudly during charging, louder than normal transformer or contactor noise.
|
Excessive Electrical Noise / Vibration | View Details |
| – |
ABL charger or cable becomes very hot to the touch during normal charging, even at rated current.
|
Overheating of Connectors or Internal Wiring | View Details |
| – |
ABL charger trips the upstream RCD or breaker as soon as charging starts, but no specific error code is shown on the charger.
|
Nuisance Tripping / Upstream Protection Trip | View Details |
| – |
ABL charger’s communication with backend or app is unstable; sometimes online, sometimes offline, without a specific error code.
|
Unstable Network Connectivity | View Details |
| – |
ABL charger’s front display or LED bar is dim, flickering, or partially not working, but charging still functions.
|
Display / LED Indicator Fault | View Details |
| – |
ABL charger’s front LEDs are off and the unit appears completely dead; no response when vehicle is plugged in.
|
No Power / Dead Unit | View Details |
| – |
ABL charger’s front LEDs blink in an undocumented pattern and the unit occasionally reboots, especially during storms or grid disturbances.
|
Grid Disturbance Sensitivity / Brownout Behavior | View Details |
| – |
ABL charger’s internal clock or scheduled charging features do not operate at the correct time, causing unexpected start/stop times.
|
Real-Time Clock / Scheduling Fault | View Details |
| – |
ABL charger’s internal fan (on models equipped) runs very loudly or continuously, even at low load.
|
Cooling Fan Overrun / Noise | View Details |
| – |
ABL charger’s RFID reader intermittently fails to recognize cards; sometimes works after multiple attempts.
|
Intermittent RFID Reading Fault | View Details |
| – |
ABL charger’s tethered cable (if equipped) shows cracks, kinks, or damaged outer sheath.
|
Mechanical Cable Damage | View Details |
| – |
ABL charger’s Type 2 socket flap or mechanical lock is stiff, does not close properly, or fails to lock the plug.
|
Mechanical Socket / Locking Mechanism Fault | View Details |
| – |
Charging starts but repeatedly stops after a few minutes without a clear error code; vehicle may show ‘charging interrupted’.
|
Intermittent Charging Interruption | View Details |
| – |
Vehicle plugged in but charging does not start; no error code shown, LEDs remain steady or show ‘ready’ state.
|
No Charge Start Without Visible Error | View Details |
| – |
Water or condensation visible inside the ABL charger housing or around the Type 2 socket; intermittent faults occur in wet weather.
|
Moisture Ingress / IP Seal Failure | View Details |
No matching codes found
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