Garo
Garo 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 will not start, charger display shows E01 immediately after vehicle is connected.
Proximity / Pilot Signal Fault
E02
Charger shows E02 and refuses to charge, often immediately after plugging in the vehicle.
Ground Fault / Residual Current Detection Trip
E03
Display shows E03 and charging stops or will not start.
PE (Protective Earth) Fault / Missing Earth
E04
Charger shows E04 and does not energize the vehicle, often after a power event.
Contactor Welded / Contactor Feedback Fault
E05
E05 displayed, charging stops shortly after starting or will not start at all.
Overcurrent / Output Overload Fault
E06
Charger shows E06 and refuses to start charging.
Overvoltage / Undervoltage Supply Fault
E07
E07 error appears and charging stops; sometimes occurs mid‑session.
Overtemperature Protection Trip
E08
Charger displays E08 and will not start charging.
Locking Mechanism Fault (Type 2 Socket Lock)
E09
E09 shown on display; charger does not recognize that a vehicle is connected.
Vehicle Detection / Proximity Fault
E10
E10 error appears and charging is disabled.
Internal Communication Fault (Main Board to Communication Module)
E11
E11 displayed; charger cannot connect to backend or app services.
Network Communication Error (Ethernet/Wi‑Fi/4G Module)
E12
E12 error; charger refuses to start due to access control issues.
RFID / Access Control Fault
E13
E13 displayed; charger indicates load balancing or current sharing error.
Dynamic Load Management / External CT Communication Fault
E14
E14 error; charger indicates phase sequence or phase loss problem.
Phase Loss / Phase Sequence Fault (Three‑Phase Units)
E15
E15 displayed; charger reports insulation or isolation fault.
Insulation Monitoring Fault (DC Leakage / Isolation Fault)
E16
E16 error; charger indicates internal memory or configuration fault.
EEPROM / Configuration Data Corruption
E17
E17 displayed; charger reports clock or time synchronization error (for scheduled charging).
Real‑Time Clock (RTC) / Time Sync Fault
E18
E18 error; charger indicates solar / PV integration fault (if configured).
PV / Smart Energy Integration Communication Fault
E19
E19 displayed; charger reports internal power supply fault.
Auxiliary Power Supply Failure
E20
E20 error; charger indicates firmware or software integrity problem.
Firmware Integrity / Bootloader Fault
Symptom
Charger cannot connect to the Garo app locally (Bluetooth) even though it is powered.
Local Wireless Communication Failure (Bluetooth/Wi‑Fi)
Symptom
Charger completely dead: no LEDs, no display, and no response when vehicle is connected.
No Power / Dead Unit
Symptom
Charger display or LEDs show random characters or flicker, but charging may still work.
User Interface Glitch / Display Controller Fault
Symptom
Charger emits a burning smell or visible smoke during or after charging.
Component Overheating / Electrical Failure
Symptom
Charger enclosure becomes very hot to the touch during normal charging.
Overheating Enclosure / Thermal Management Issue
Symptom
Charger frequently loses connection to cloud services but continues to charge locally.
Unstable Cloud Connectivity
Symptom
Charger front panel or enclosure vibrates noticeably when contactor pulls in.
Mechanical Vibration / Mounting Issue
Symptom
Charger makes a loud humming or buzzing noise during operation.
Excessive Contactor or Transformer Noise
Symptom
Charger powers on but display is blank or unreadable; LEDs may still function.
Display Module Failure
Symptom
Charger reports much lower charging current than configured or expected; charging is very slow.
Reduced Output Current / Derating
Symptom
Charger trips the upstream RCD or breaker as soon as charging starts.
Nuisance Tripping / High Inrush or Leakage
Symptom
Charging stops intermittently before the battery is full; no specific error code displayed.
Intermittent Charging Dropout
Symptom
RFID cards are not recognized; charger stays locked even though RFID mode is enabled.
RFID Reading Failure (No Error Code)
Symptom
Scheduled charging does not start at the programmed time; charger remains idle.
Scheduling / Timer Malfunction
Symptom
Type 2 plug is difficult to insert or remove from the Garo socket.
Mechanical Socket Wear or Obstruction
Symptom
Vehicle connected but charging does not start; no error code shown on display or LEDs.
Charging Session Not Initiating (No‑Start Condition)
Symptom
Water or condensation visible inside the charger enclosure or behind the front window.
Moisture Ingress / Seal Failure
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Charging session will not start, charger display shows E01 immediately after vehicle is connected.
|
Proximity / Pilot Signal Fault | View Details |
| E02 |
Charger shows E02 and refuses to charge, often immediately after plugging in the vehicle.
|
Ground Fault / Residual Current Detection Trip | View Details |
| E03 |
Display shows E03 and charging stops or will not start.
|
PE (Protective Earth) Fault / Missing Earth | View Details |
| E04 |
Charger shows E04 and does not energize the vehicle, often after a power event.
|
Contactor Welded / Contactor Feedback Fault | View Details |
| E05 |
E05 displayed, charging stops shortly after starting or will not start at all.
|
Overcurrent / Output Overload Fault | View Details |
| E06 |
Charger shows E06 and refuses to start charging.
|
Overvoltage / Undervoltage Supply Fault | View Details |
| E07 |
E07 error appears and charging stops; sometimes occurs mid‑session.
|
Overtemperature Protection Trip | View Details |
| E08 |
Charger displays E08 and will not start charging.
|
Locking Mechanism Fault (Type 2 Socket Lock) | View Details |
| E09 |
E09 shown on display; charger does not recognize that a vehicle is connected.
|
Vehicle Detection / Proximity Fault | View Details |
| E10 |
E10 error appears and charging is disabled.
|
Internal Communication Fault (Main Board to Communication Module) | View Details |
| E11 |
E11 displayed; charger cannot connect to backend or app services.
|
Network Communication Error (Ethernet/Wi‑Fi/4G Module) | View Details |
| E12 |
E12 error; charger refuses to start due to access control issues.
|
RFID / Access Control Fault | View Details |
| E13 |
E13 displayed; charger indicates load balancing or current sharing error.
|
Dynamic Load Management / External CT Communication Fault | View Details |
| E14 |
E14 error; charger indicates phase sequence or phase loss problem.
|
Phase Loss / Phase Sequence Fault (Three‑Phase Units) | View Details |
| E15 |
E15 displayed; charger reports insulation or isolation fault.
|
Insulation Monitoring Fault (DC Leakage / Isolation Fault) | View Details |
| E16 |
E16 error; charger indicates internal memory or configuration fault.
|
EEPROM / Configuration Data Corruption | View Details |
| E17 |
E17 displayed; charger reports clock or time synchronization error (for scheduled charging).
|
Real‑Time Clock (RTC) / Time Sync Fault | View Details |
| E18 |
E18 error; charger indicates solar / PV integration fault (if configured).
|
PV / Smart Energy Integration Communication Fault | View Details |
| E19 |
E19 displayed; charger reports internal power supply fault.
|
Auxiliary Power Supply Failure | View Details |
| E20 |
E20 error; charger indicates firmware or software integrity problem.
|
Firmware Integrity / Bootloader Fault | View Details |
| – |
Charger cannot connect to the Garo app locally (Bluetooth) even though it is powered.
|
Local Wireless Communication Failure (Bluetooth/Wi‑Fi) | View Details |
| – |
Charger completely dead: no LEDs, no display, and no response when vehicle is connected.
|
No Power / Dead Unit | View Details |
| – |
Charger display or LEDs show random characters or flicker, but charging may still work.
|
User Interface Glitch / Display Controller Fault | View Details |
| – |
Charger emits a burning smell or visible smoke during or after charging.
|
Component Overheating / Electrical Failure | View Details |
| – |
Charger enclosure becomes very hot to the touch during normal charging.
|
Overheating Enclosure / Thermal Management Issue | View Details |
| – |
Charger frequently loses connection to cloud services but continues to charge locally.
|
Unstable Cloud Connectivity | View Details |
| – |
Charger front panel or enclosure vibrates noticeably when contactor pulls in.
|
Mechanical Vibration / Mounting Issue | View Details |
| – |
Charger makes a loud humming or buzzing noise during operation.
|
Excessive Contactor or Transformer Noise | View Details |
| – |
Charger powers on but display is blank or unreadable; LEDs may still function.
|
Display Module Failure | View Details |
| – |
Charger reports much lower charging current than configured or expected; charging is very slow.
|
Reduced Output Current / Derating | View Details |
| – |
Charger trips the upstream RCD or breaker as soon as charging starts.
|
Nuisance Tripping / High Inrush or Leakage | View Details |
| – |
Charging stops intermittently before the battery is full; no specific error code displayed.
|
Intermittent Charging Dropout | View Details |
| – |
RFID cards are not recognized; charger stays locked even though RFID mode is enabled.
|
RFID Reading Failure (No Error Code) | View Details |
| – |
Scheduled charging does not start at the programmed time; charger remains idle.
|
Scheduling / Timer Malfunction | View Details |
| – |
Type 2 plug is difficult to insert or remove from the Garo socket.
|
Mechanical Socket Wear or Obstruction | View Details |
| – |
Vehicle connected but charging does not start; no error code shown on display or LEDs.
|
Charging Session Not Initiating (No‑Start Condition) | View Details |
| – |
Water or condensation visible inside the charger enclosure or behind the front window.
|
Moisture Ingress / Seal Failure | View Details |
No matching codes found
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