Amperfied
Amperfied 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; vehicle shows ‘charging error’ and wallbox display shows E01 immediately after plugging in.
Proximity / Pilot Signal Communication Fault
E02
Wallbox refuses to charge and displays E02; vehicle may show ‘check power source’ or ‘charging station error’.
EVSE Contactor / Relay Fault
E03
Charger shows E03 and refuses to start charging; sometimes occurs intermittently when plugging in.
Ground / Protective Earth Fault Detection
E04
Charging stops or will not start; display shows E04 indicating residual current device (RCD) trip or DC fault.
Residual Current / DC Leakage Fault
E05
Wallbox shows E05 and does not charge; often associated with incorrect supply voltage or phase configuration.
Supply Voltage / Phase Configuration Error
E06
Display shows E06 and the charger refuses to start; often logged as an over‑temperature event.
Overtemperature Protection Trip
E07
Charger shows E07 and will not charge; may occur after a lightning storm or grid disturbance.
Surge / Overvoltage Protection Triggered
E08
Display shows E08; charger does not recognize that a vehicle is connected.
Vehicle Detection / State Machine Error
E09
Charger shows E09 and stops charging shortly after start; may be logged as ‘relay feedback error’.
Contactor Feedback / Weld Detection Error
E10
Display shows E10; charger is online but cannot start charging and may show ‘internal communication error’.
Internal Communication Bus Failure
E11
Charger shows E11 and refuses to start; often associated with RFID or access control issues.
Authorization / RFID Reader Fault
E12
Display shows E12; charger cannot connect to backend or app services, but local charging may still work.
Network / Communication Error
E13
Charger shows E13 and limits or stops charging when multiple loads are active in the house.
Dynamic Load Management / Current Sensor Fault
E14
Display shows E14; charger indicates ‘lock error’ and cannot start or end a session properly.
Connector Locking Mechanism Fault
E15
Charger shows E15 and refuses to start; often described as ‘meter error’ on smart metered models.
Internal Energy Meter / MID Meter Fault
E16
Display shows E16; charger indicates ‘phase imbalance’ or ‘overcurrent’ and stops charging.
Overcurrent / Phase Imbalance Protection
E17
Charger shows E17; often logged as ‘isolation fault’ or ‘insulation resistance too low’.
Insulation Monitoring / Isolation Fault
E18
Display shows E18; charger indicates ‘firmware error’ or ‘configuration error’ and may not start.
Firmware / Configuration Corruption
E19
Charger shows E19; often associated with OCPP or backend protocol errors on connected models.
OCPP / Backend Protocol Communication Fault
E20
Display shows E20; charger indicates ‘internal power supply error’ and is partially or completely unresponsive.
Auxiliary Power Supply Failure
Symptom
Charger cable becomes stiff, cracked, or the outer sheath shows signs of UV damage or aging.
Aged / Degraded Charging Cable
Symptom
Charger display or LEDs are on, but the unit is unresponsive to button presses, RFID cards, or app commands.
User Interface / Control Lockup
Symptom
Charger does not follow configured charging schedules or time‑of‑use settings; charges at unexpected times.
Scheduling / Timekeeping Fault
Symptom
Charger emits a loud humming or buzzing noise during charging, louder than previously experienced.
Excessive Acoustic Noise from Contactor or Power Components
Symptom
Charger frequently disconnects from Wi‑Fi or Ethernet, causing app control and monitoring to be unreliable.
Unstable Network Connectivity
Symptom
Charger housing becomes unusually warm or hot to the touch during normal charging, even at moderate current.
Excessive Thermal Rise in Housing
Symptom
Charger intermittently stops charging without any visible error code; charging resumes after unplugging and replugging.
Intermittent Charging Interruption
Symptom
Charger occasionally fails to release the plug after charging ends; mechanical resistance when unplugging.
Sticky Connector Lock Mechanism
Symptom
Charger trips the upstream RCD/RCBO or main breaker as soon as a charging session starts, but no specific error code is shown on the charger.
Upstream Protection Nuisance Tripping
Symptom
Charger’s front LEDs or display are completely dead; no signs of life even though the breaker is on.
No Power / Dead Unit
Symptom
Charger’s front panel or enclosure is cracked or broken, but the unit still appears to function.
Compromised Enclosure Integrity
Symptom
Charger’s internal fan (if equipped) runs very loudly or continuously, even at low load or when idle.
Cooling Fan Overrun / Noise
Symptom
Charger’s LEDs or display flicker or dim during charging, but charging continues.
Low‑Voltage Supply Instability
Symptom
Charger’s Type 2 socket or tethered plug is physically damaged (cracked housing, bent pins, melted plastic).
Mechanical Damage to Charging Interface
Symptom
Dynamic load management does not seem to work: house main breaker trips when EV charging and other loads are on.
Dynamic Load Management Not Limiting Current
Symptom
RFID cards that used to work are no longer recognized; charger stays locked even though LEDs are normal.
RFID Access Control Malfunction
Symptom
Vehicle will not start charging; no error code on charger, only a steady ready LED, but the car reports ‘no charging’ or ‘check cable’.
No Charge Start Without Error Indication
Symptom
Visible arcing, crackling sounds, or burning smell from the Amperfied charger during or shortly after plugging in.
Arcing / Loose High‑Current Connection
Symptom
Water or condensation visible inside or around the charger housing; possible intermittent faults in wet weather.
Water Ingress / Moisture Contamination
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Charging session will not start; vehicle shows ‘charging error’ and wallbox display shows E01 immediately after plugging in.
|
Proximity / Pilot Signal Communication Fault | View Details |
| E02 |
Wallbox refuses to charge and displays E02; vehicle may show ‘check power source’ or ‘charging station error’.
|
EVSE Contactor / Relay Fault | View Details |
| E03 |
Charger shows E03 and refuses to start charging; sometimes occurs intermittently when plugging in.
|
Ground / Protective Earth Fault Detection | View Details |
| E04 |
Charging stops or will not start; display shows E04 indicating residual current device (RCD) trip or DC fault.
|
Residual Current / DC Leakage Fault | View Details |
| E05 |
Wallbox shows E05 and does not charge; often associated with incorrect supply voltage or phase configuration.
|
Supply Voltage / Phase Configuration Error | View Details |
| E06 |
Display shows E06 and the charger refuses to start; often logged as an over‑temperature event.
|
Overtemperature Protection Trip | View Details |
| E07 |
Charger shows E07 and will not charge; may occur after a lightning storm or grid disturbance.
|
Surge / Overvoltage Protection Triggered | View Details |
| E08 |
Display shows E08; charger does not recognize that a vehicle is connected.
|
Vehicle Detection / State Machine Error | View Details |
| E09 |
Charger shows E09 and stops charging shortly after start; may be logged as ‘relay feedback error’.
|
Contactor Feedback / Weld Detection Error | View Details |
| E10 |
Display shows E10; charger is online but cannot start charging and may show ‘internal communication error’.
|
Internal Communication Bus Failure | View Details |
| E11 |
Charger shows E11 and refuses to start; often associated with RFID or access control issues.
|
Authorization / RFID Reader Fault | View Details |
| E12 |
Display shows E12; charger cannot connect to backend or app services, but local charging may still work.
|
Network / Communication Error | View Details |
| E13 |
Charger shows E13 and limits or stops charging when multiple loads are active in the house.
|
Dynamic Load Management / Current Sensor Fault | View Details |
| E14 |
Display shows E14; charger indicates ‘lock error’ and cannot start or end a session properly.
|
Connector Locking Mechanism Fault | View Details |
| E15 |
Charger shows E15 and refuses to start; often described as ‘meter error’ on smart metered models.
|
Internal Energy Meter / MID Meter Fault | View Details |
| E16 |
Display shows E16; charger indicates ‘phase imbalance’ or ‘overcurrent’ and stops charging.
|
Overcurrent / Phase Imbalance Protection | View Details |
| E17 |
Charger shows E17; often logged as ‘isolation fault’ or ‘insulation resistance too low’.
|
Insulation Monitoring / Isolation Fault | View Details |
| E18 |
Display shows E18; charger indicates ‘firmware error’ or ‘configuration error’ and may not start.
|
Firmware / Configuration Corruption | View Details |
| E19 |
Charger shows E19; often associated with OCPP or backend protocol errors on connected models.
|
OCPP / Backend Protocol Communication Fault | View Details |
| E20 |
Display shows E20; charger indicates ‘internal power supply error’ and is partially or completely unresponsive.
|
Auxiliary Power Supply Failure | View Details |
| – |
Charger cable becomes stiff, cracked, or the outer sheath shows signs of UV damage or aging.
|
Aged / Degraded Charging Cable | View Details |
| – |
Charger display or LEDs are on, but the unit is unresponsive to button presses, RFID cards, or app commands.
|
User Interface / Control Lockup | View Details |
| – |
Charger does not follow configured charging schedules or time‑of‑use settings; charges at unexpected times.
|
Scheduling / Timekeeping Fault | View Details |
| – |
Charger emits a loud humming or buzzing noise during charging, louder than previously experienced.
|
Excessive Acoustic Noise from Contactor or Power Components | View Details |
| – |
Charger frequently disconnects from Wi‑Fi or Ethernet, causing app control and monitoring to be unreliable.
|
Unstable Network Connectivity | View Details |
| – |
Charger housing becomes unusually warm or hot to the touch during normal charging, even at moderate current.
|
Excessive Thermal Rise in Housing | View Details |
| – |
Charger intermittently stops charging without any visible error code; charging resumes after unplugging and replugging.
|
Intermittent Charging Interruption | View Details |
| – |
Charger occasionally fails to release the plug after charging ends; mechanical resistance when unplugging.
|
Sticky Connector Lock Mechanism | View Details |
| – |
Charger trips the upstream RCD/RCBO or main breaker as soon as a charging session starts, but no specific error code is shown on the charger.
|
Upstream Protection Nuisance Tripping | View Details |
| – |
Charger’s front LEDs or display are completely dead; no signs of life even though the breaker is on.
|
No Power / Dead Unit | View Details |
| – |
Charger’s front panel or enclosure is cracked or broken, but the unit still appears to function.
|
Compromised Enclosure Integrity | View Details |
| – |
Charger’s internal fan (if equipped) runs very loudly or continuously, even at low load or when idle.
|
Cooling Fan Overrun / Noise | View Details |
| – |
Charger’s LEDs or display flicker or dim during charging, but charging continues.
|
Low‑Voltage Supply Instability | View Details |
| – |
Charger’s Type 2 socket or tethered plug is physically damaged (cracked housing, bent pins, melted plastic).
|
Mechanical Damage to Charging Interface | View Details |
| – |
Dynamic load management does not seem to work: house main breaker trips when EV charging and other loads are on.
|
Dynamic Load Management Not Limiting Current | View Details |
| – |
RFID cards that used to work are no longer recognized; charger stays locked even though LEDs are normal.
|
RFID Access Control Malfunction | View Details |
| – |
Vehicle will not start charging; no error code on charger, only a steady ready LED, but the car reports ‘no charging’ or ‘check cable’.
|
No Charge Start Without Error Indication | View Details |
| – |
Visible arcing, crackling sounds, or burning smell from the Amperfied charger during or shortly after plugging in.
|
Arcing / Loose High‑Current Connection | View Details |
| – |
Water or condensation visible inside or around the charger housing; possible intermittent faults in wet weather.
|
Water Ingress / Moisture Contamination | View Details |
No matching codes found
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