Mennekes
Mennekes 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; EVSE display shows E01 shortly after plugging in the vehicle.
Proximity / Pilot Line Communication Fault
E02
Charger displays E02 and refuses to energize; vehicle reports charging station error.
Ground Fault / Insulation Monitoring Error
E03
Display shows E03 and charging stops immediately after relay click or does not start at all.
Contactor / Relay Welded or Feedback Error
E04
Charger shows E04; vehicle does not detect charging station or shows communication error.
Vehicle Communication / PWM Signal Fault
E05
Charger displays E05 and refuses to start; sometimes occurs after power outage or surge.
Overvoltage / Undervoltage Supply Fault
E06
E06 appears and charging stops; often associated with high ambient temperature or direct sun exposure.
Overtemperature Protection Trip
E07
Charger shows E07; vehicle may start charging briefly then stop.
PE (Protective Earth) Fault / Earth Continuity Error
E08
E08 displayed; charger indicates phase error and refuses to start (on 3-phase installations).
Phase Loss / Phase Sequence Error
E09
Charger displays E09; RFID card is not accepted and charging cannot be started (on access-controlled models).
RFID Reader / Authorization Error
E10
E10 error; charging stops and display indicates residual current device trip or leakage fault.
DC Residual Current Detection Fault
E11
Charger shows E11; display or LEDs may be frozen or unresponsive.
Internal Communication / CAN Bus Error
E12
E12 appears; charger indicates metering error or energy measurement fault (on metered models).
Energy Meter / Current Transformer Fault
E13
Charger shows E13; charging current is limited or session aborted due to load management error.
Load Management / External Control Fault
E14
E14 error; charger indicates internal memory or configuration fault.
EEPROM / Configuration Data Corruption
E15
Charger shows E15; internal self-test fails at startup.
General Hardware Self-Test Failure
E16
E16 displayed; charger indicates lock mechanism error and will not release or accept plug.
Plug Locking Actuator Fault
E17
Charger shows E17; LED status indicates emergency stop active.
Emergency Stop Circuit Active or Faulty
E18
E18 error; charger indicates time synchronization or clock error (on networked models).
Real-Time Clock / NTP Synchronization Fault
E19
Charger shows E19; OCPP or backend communication error on smart-connected models.
Backend / OCPP Communication Fault
E20
E20 displayed; charger indicates overcurrent or short-circuit event.
Output Overcurrent / Short-Circuit Protection Trip
Symptom
Charger completely dead: no LEDs, no display, vehicle not detected.
No Power / Dead Unit
Symptom
Charger emits a burning smell or visible smoke during or after a charging session.
Severe Overheating / Component Failure
Symptom
Charger housing becomes unusually warm or hot to the touch during normal charging.
Overheating of Internal Components
Symptom
Charger makes loud humming or buzzing noise during operation.
Acoustic Noise from Contactor or Transformer
Symptom
Charger powers on but display is blank or unreadable; LEDs may still function.
Display / HMI Failure
Symptom
Charger trips the upstream RCD/RCBO as soon as a vehicle is plugged in.
Leakage Current / Earth Fault on Connection
Symptom
Charger’s cable management hook or bracket is broken, causing strain on the tethered cable.
Mechanical Support / Strain Relief Failure
Symptom
Charger’s door or cover does not close properly or latch securely.
Enclosure Latch / Hinge Misalignment
Symptom
Charger’s internal clock-based functions (e.g., scheduled charging, logging timestamps) are inaccurate.
RTC Drift / Configuration Issue
Symptom
Charger’s internal fan runs continuously even when no vehicle is connected.
Cooling Control / Temperature Sensor Drift
Symptom
Charger’s LEDs flash in an unusual pattern, but no explicit error code is shown; charging performance seems reduced.
Thermal Derating / Load Management Indication
Symptom
Charger’s RFID reader area is physically damaged or vandalized; cards are no longer recognized.
Mechanical Damage to RFID Reader
Symptom
Charger’s Type 2 socket or plug shows signs of melting or discoloration.
Overheated Connector / Contact Damage
Symptom
Vehicle intermittently stops charging and then resumes without user interaction.
Intermittent CP/PP Connection or Thermal Derating
Symptom
Vehicle plugged in but charging does not start; no error code on display, LEDs show ready state.
No Charge Start Without Error Indication
Symptom
Water or condensation visible inside the charger housing or behind transparent cover.
Moisture Ingress / IP Seal Failure
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Charging session does not start; EVSE display shows E01 shortly after plugging in the vehicle.
|
Proximity / Pilot Line Communication Fault | View Details |
| E02 |
Charger displays E02 and refuses to energize; vehicle reports charging station error.
|
Ground Fault / Insulation Monitoring Error | View Details |
| E03 |
Display shows E03 and charging stops immediately after relay click or does not start at all.
|
Contactor / Relay Welded or Feedback Error | View Details |
| E04 |
Charger shows E04; vehicle does not detect charging station or shows communication error.
|
Vehicle Communication / PWM Signal Fault | View Details |
| E05 |
Charger displays E05 and refuses to start; sometimes occurs after power outage or surge.
|
Overvoltage / Undervoltage Supply Fault | View Details |
| E06 |
E06 appears and charging stops; often associated with high ambient temperature or direct sun exposure.
|
Overtemperature Protection Trip | View Details |
| E07 |
Charger shows E07; vehicle may start charging briefly then stop.
|
PE (Protective Earth) Fault / Earth Continuity Error | View Details |
| E08 |
E08 displayed; charger indicates phase error and refuses to start (on 3-phase installations).
|
Phase Loss / Phase Sequence Error | View Details |
| E09 |
Charger displays E09; RFID card is not accepted and charging cannot be started (on access-controlled models).
|
RFID Reader / Authorization Error | View Details |
| E10 |
E10 error; charging stops and display indicates residual current device trip or leakage fault.
|
DC Residual Current Detection Fault | View Details |
| E11 |
Charger shows E11; display or LEDs may be frozen or unresponsive.
|
Internal Communication / CAN Bus Error | View Details |
| E12 |
E12 appears; charger indicates metering error or energy measurement fault (on metered models).
|
Energy Meter / Current Transformer Fault | View Details |
| E13 |
Charger shows E13; charging current is limited or session aborted due to load management error.
|
Load Management / External Control Fault | View Details |
| E14 |
E14 error; charger indicates internal memory or configuration fault.
|
EEPROM / Configuration Data Corruption | View Details |
| E15 |
Charger shows E15; internal self-test fails at startup.
|
General Hardware Self-Test Failure | View Details |
| E16 |
E16 displayed; charger indicates lock mechanism error and will not release or accept plug.
|
Plug Locking Actuator Fault | View Details |
| E17 |
Charger shows E17; LED status indicates emergency stop active.
|
Emergency Stop Circuit Active or Faulty | View Details |
| E18 |
E18 error; charger indicates time synchronization or clock error (on networked models).
|
Real-Time Clock / NTP Synchronization Fault | View Details |
| E19 |
Charger shows E19; OCPP or backend communication error on smart-connected models.
|
Backend / OCPP Communication Fault | View Details |
| E20 |
E20 displayed; charger indicates overcurrent or short-circuit event.
|
Output Overcurrent / Short-Circuit Protection Trip | View Details |
| – |
Charger completely dead: no LEDs, no display, vehicle not detected.
|
No Power / Dead Unit | View Details |
| – |
Charger emits a burning smell or visible smoke during or after a charging session.
|
Severe Overheating / Component Failure | View Details |
| – |
Charger housing becomes unusually warm or hot to the touch during normal charging.
|
Overheating of Internal Components | View Details |
| – |
Charger makes loud humming or buzzing noise during operation.
|
Acoustic Noise from Contactor or Transformer | View Details |
| – |
Charger powers on but display is blank or unreadable; LEDs may still function.
|
Display / HMI Failure | View Details |
| – |
Charger trips the upstream RCD/RCBO as soon as a vehicle is plugged in.
|
Leakage Current / Earth Fault on Connection | View Details |
| – |
Charger’s cable management hook or bracket is broken, causing strain on the tethered cable.
|
Mechanical Support / Strain Relief Failure | View Details |
| – |
Charger’s door or cover does not close properly or latch securely.
|
Enclosure Latch / Hinge Misalignment | View Details |
| – |
Charger’s internal clock-based functions (e.g., scheduled charging, logging timestamps) are inaccurate.
|
RTC Drift / Configuration Issue | View Details |
| – |
Charger’s internal fan runs continuously even when no vehicle is connected.
|
Cooling Control / Temperature Sensor Drift | View Details |
| – |
Charger’s LEDs flash in an unusual pattern, but no explicit error code is shown; charging performance seems reduced.
|
Thermal Derating / Load Management Indication | View Details |
| – |
Charger’s RFID reader area is physically damaged or vandalized; cards are no longer recognized.
|
Mechanical Damage to RFID Reader | View Details |
| – |
Charger’s Type 2 socket or plug shows signs of melting or discoloration.
|
Overheated Connector / Contact Damage | View Details |
| – |
Vehicle intermittently stops charging and then resumes without user interaction.
|
Intermittent CP/PP Connection or Thermal Derating | View Details |
| – |
Vehicle plugged in but charging does not start; no error code on display, LEDs show ready state.
|
No Charge Start Without Error Indication | View Details |
| – |
Water or condensation visible inside the charger housing or behind transparent cover.
|
Moisture Ingress / IP Seal Failure | View Details |
No matching codes found
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