Rolec EV Home Chargers Error Codes

E01

Charger will not start charging; front LED shows solid red with E01 on the display or in the Rolec app.

Proximity / Pilot Signal Fault

E02

Charging session terminates immediately after plugging in; charger shows E02 and red LED, vehicle does not begin charging.

Contactor / Relay Welded or Not Pulling In

E03

Charger displays E03 and refuses to start; vehicle may show an earthing or installation fault message.

Earth Fault / Protective Earth Monitoring Error

E04

Charger shows E04 and red LED; charging stops or will not start, often after a storm or power fluctuation.

Overvoltage / Undervoltage Supply Fault

E05

Charger intermittently trips to E05 during or shortly after starting a charge; may coincide with RCD tripping.

Residual Current / DC Leakage Fault

E06

Charger displays E06 and refuses to start; often logged as a "PEN fault" or "PME fault" in the app.

PEN Conductor / PME Fault Detection

E07

Charger shows E07; fan may run at high speed or unit feels unusually warm to the touch.

Overtemperature Protection Trip

E08

Charger displays E08 and will not initiate charging; often associated with communication issues with smart meter or CT clamp.

Load Management / CT Clamp Communication Fault

E09

Charger shows E09; app may indicate "RCD self‑test failed" or similar; unit refuses to charge.

Internal RCD Self‑Test Failure

E10

Charger shows E10; app or display may indicate "GPRS/4G communication error" or "OCPP server unreachable" on smart Rolec units.

Network / Backend Communication Fault

E11

Charger displays E11; app may show "Wi‑Fi connection failed" or "no internet" on Wi‑Fi enabled Rolec home chargers.

Wi‑Fi Connectivity Fault

E12

Charger shows E12; app may indicate "RFID reader error" or "authorisation device fault" on RFID‑enabled Rolec units.

RFID Reader / Authentication Fault

E13

Charger displays E13; app may show "meter error" or "MID meter communication fault" on metered Rolec units.

Internal Energy Meter Communication Fault

E14

Charger shows E14; app may indicate "firmware error" or "configuration corrupted"; unit may reboot repeatedly.

Firmware / Configuration Corruption

E15

Charger displays E15; app may show "schedule conflict" or "time sync error"; scheduled charging does not start.

Real‑Time Clock / Scheduling Fault

E16

Charger shows E16; app may indicate "overcurrent" or "output current exceeded"; charging stops abruptly.

Overcurrent Protection Trip

E17

Charger displays E17; app may show "phase imbalance" or "phase loss" on three‑phase Rolec units.

Phase Loss / Phase Imbalance Fault

E18

Charger shows E18; app may indicate "socket lock error"; Type 2 socket flap or locking pin will not engage or release.

Socket Locking Mechanism Fault

E19

Charger displays E19; app may show "pilot short to earth" or "CP fault"; charging cannot start.

Control Pilot Short / Ground Fault

E20

Charger shows E20; app may indicate "no vehicle detected" even when the plug is inserted; LEDs may stay in standby colour.

Vehicle Detection / Proximity Circuit Fault

Symptom

Burning smell or visible scorch marks around the Rolec charger or its cable during or after charging.

Overheating / Arcing at Connections

Symptom

Charger completely dead – no LEDs, no display, no response when vehicle is plugged in.

No Power / Supply Loss

Symptom

Charger enclosure feels excessively hot to the touch during normal charging, even in mild ambient temperatures.

Overheating Enclosure / Poor Thermal Management

Symptom

Charger makes loud humming or buzzing noises during charging, louder than typical contactor click and transformer hum.

Excessive Vibration / Acoustic Noise from Contactor or Coils

Symptom

Charger powers on but will not start charging; LEDs remain in ready/standby state and vehicle shows "charging not started" with no error code.

Charge Enable / Start Command Not Received

Symptom

Charger randomly reboots or restarts during charging, causing brief interruptions but then resumes.

Intermittent Control PCB Reset / Power Supply Instability

Symptom

Charger starts charging but stops after a few minutes without any error code on the front; vehicle may show "charging interrupted".

Intermittent Supply or Thermal Cut‑Out

Symptom

Charger trips the house RCD or RCBO as soon as a vehicle is plugged in or charging starts.

Nuisance RCD Tripping / Earth Leakage

Symptom

Charger’s built‑in kWh readings or app energy reports are clearly inaccurate compared to the vehicle’s reported energy.

Energy Meter Calibration / Measurement Error

Symptom

Charger’s front display or LEDs are completely blank, but the vehicle still charges normally when plugged in.

Display / LED Board Failure

Symptom

Charger’s front LEDs are flashing in an unusual pattern not documented in the user guide, but no code is shown in the app.

Undocumented Firmware State / Minor Fault

Symptom

Charging speed is significantly lower than expected; vehicle shows reduced kW even though charger is rated higher.

Reduced Output Current / Derating

Symptom

Physical damage to the Rolec charger enclosure, such as cracks, broken hinges, or missing cover screws, but unit still operates.

Compromised Enclosure Integrity / IP Rating

Symptom

Rolec charger not visible in the mobile app or cannot be paired, even though LEDs indicate normal standby.

Pairing / Commissioning Failure

Symptom

Vehicle displays "check charging station" or similar generic error when connected to the Rolec charger, but other chargers work fine.

Compatibility / Signalling Tolerance Issue

Symptom

Vehicle reports "charging cable locked" or cannot be unplugged from the Rolec charger after charging completes.

Stuck Socket Lock / Mechanical Jam

Symptom

Visible water or condensation inside the transparent window or on internal components of the Rolec charger.

Moisture Ingress / Condensation