KEBA EV Home Chargers Error Codes

E01

Charging session does not start; EVSE shows E01 on LED/display and vehicle does not lock the connector

Proximity / Control Pilot Communication Fault

E02

Charger displays E02 and refuses to start charging; vehicle may show 'charging station error'

Ground Fault / Residual Current Detection Trip

E03

Charger shows E03 and does not energize the contactor; no charging current flows

Contactor / Power Relay Fault

E04

Charger indicates E04 and refuses to start; installation manual refers to 'phase failure' or 'mains voltage error'

Supply Voltage / Phase Monitoring Fault

E05

Charger shows E05 and stops charging shortly after start; may restart and fail repeatedly

Overtemperature Protection Trip

E06

Charger displays E06; RFID or authorization fails and charging cannot be started

Authorization / RFID Reader Fault

E07

Charger shows E07; communication with external energy management or smart home system fails

Communication Bus / Modbus / Ethernet Fault

E08

Charger indicates E08; dynamic load management or external current sensor not recognized

External Current Transformer / Load Management Input Fault

E09

Charger shows E09; internal self-test reports 'isolation fault' or 'insulation resistance too low'

Insulation Monitoring Fault

E10

Charger displays E10; internal power supply error, LEDs may flicker or be off

Auxiliary Power Supply Fault

E11

Charger shows E11; internal memory or configuration error, may revert to default settings

Non-Volatile Memory / Configuration Fault

E12

Charger indicates E12; internal clock or synchronization error, scheduled charging may not work

Real-Time Clock / Time Synchronization Fault

E13

Charger shows E13; internal fan or cooling system error (on models with active cooling)

Cooling Fan / Thermal Management Fault

E14

Charger displays E14; internal relay test failed during self-check

Welded Relay / Stuck Contactor Detection

E15

Charger shows E15; internal DC fault or DC residual current above threshold

DC Residual Current Detection Fault

E16

Charger indicates E16; internal metering or energy measurement error

Energy Meter / Current Measurement Fault

E17

Charger shows E17; internal watchdog or CPU error, unit may reboot repeatedly

Processor / Watchdog Reset Fault

E18

Charger displays E18; internal display or LED control error

User Interface / LED Driver Fault

E19

Charger shows E19; internal contactor pre-charge or inrush limiting error

Pre-Charge / Inrush Limiting Circuit Fault

E20

Charger indicates E20; internal earth connection or PE monitoring error

Protective Earth (PE) Monitoring Fault

Symptom

Audible buzzing or chattering noise from KEBA charger during charging

Noisy Contactor or Coil Vibration

Symptom

Burnt smell or visible discoloration around KEBA charger cable entry or socket

Localized Overheating / Contact Damage

Symptom

Charging stops randomly during session; KEBA LEDs show ready state again without an error code

Intermittent Supply or Contactor Drop-Out

Symptom

KEBA charger does not follow external load management commands (e.g., from PV system or building EMS)

External Control / Load Management Integration Issue

Symptom

KEBA charger does not power up at all; no LEDs, no display, vehicle not recognized

No Power / Dead Unit

Symptom

KEBA charger frequently trips the upstream RCD when starting or during charging

Nuisance RCD Tripping / Leakage Current Issue

Symptom

KEBA charger housing becomes unusually hot to the touch during normal charging, even at moderate current

Overheating Due to Poor Connections or Installation

Symptom

KEBA charger intermittently loses connection to Wi-Fi or Ethernet network, but charging continues

Network Connectivity Instability

Symptom

KEBA charger’s enclosure vibrates or rattles when contactor closes or during charging

Mechanical Vibration / Loose Mounting

Symptom

KEBA charger’s internal fan runs loudly or continuously even at low charging currents

Fan Control or Temperature Sensing Anomaly

Symptom

KEBA charger’s LEDs or light ring are very dim or uneven, but charging still works

LED Aging or Partial Failure

Symptom

RFID cards are sometimes not recognized unless held in a very specific position or for a long time

Weak RFID Reader Performance

Symptom

Scheduled charging does not start at the programmed time, but manual charging works

Scheduling / Timer Configuration Problem

Symptom

Type 2 plug is difficult to insert or remove from KEBA charger socket

Mechanical Wear or Deformation of Socket

Symptom

Vehicle will not start charging; KEBA charger shows normal ready status but car reports 'charging error' with no code on charger

Intermittent Control Pilot / Vehicle Handshake Issue

Symptom

Water or condensation visible inside transparent parts of KEBA charger or behind front panel

Moisture Ingress / Seal Failure