Grizzl-E EV Home Chargers Error Codes

E01

Charger will not start charging; vehicle shows ‘Charging Error’; Grizzl‑E status LED solid red immediately after plugging in

Ground Fault / Leakage Current Detected

E02

Charger powers up but will not charge; LEDs indicate error; vehicle displays ‘Check power source’ or ‘Charging station error’

Pilot Signal Communication Failure

E03

Charger LEDs show error shortly after plugging in; vehicle may start then immediately stop charging

Contactor Welded or Contactor Feedback Fault

E04

Charger will not power up; no LEDs or only a brief flash followed by error indication; breaker is ON

Input Voltage Out of Range / Line Voltage Error

E05

Charger starts charging then stops after a short time; LEDs indicate over‑temperature or thermal error

Overtemperature Protection Trip

E06

Charger indicates error when vehicle is connected; vehicle may show ‘Grounding issue’ or ‘Check earth connection’

Protective Earth / Ground Continuity Fault

E07

Charger LEDs show error; vehicle will not charge; error appears immediately when EV is connected

Proximity / Latch Switch Fault in J1772 Handle

E08

Charger indicates error; vehicle may show ‘Overcurrent’ or ‘Charging limited’; charging stops under heavy load

Output Overcurrent / Current Sensor Fault

E09

Charger LEDs show error; unit may not power up fully; occurs after lightning storm or power surge

Surge Protection / MOV Failure

E10

Charger LEDs indicate error; unit may intermittently reboot or flicker; no stable operation

Low‑Voltage Power Supply Fault

E11

Charger LEDs show error; vehicle reports ‘Incorrect wiring’ or ‘Line/Neutral reversed’

Line Wiring / Phase Detection Error

E12

Charger LEDs indicate error; unit refuses to start charging after internal self‑test

Self‑Test / Internal Diagnostic Failure

E13

Charger LEDs show error; vehicle indicates ‘Pilot error’ or ‘EVSE error’; occurs with multiple vehicles

Pilot Duty Cycle / Current Limit Encoding Error

E14

Charger LEDs indicate error; unit trips breaker when starting charge or immediately after connection

Internal Short Circuit / Insulation Failure

E15

Charger LEDs show error; unit appears to power but does not respond correctly to vehicle connection

Microcontroller / Logic Fault

E16

Charger LEDs indicate error; unit reports ‘relay test fail’ or similar during startup (if diagnostic LEDs available)

Stuck or Non‑Operating Contactor

E17

Charger LEDs show error; unit may start but then immediately stop when vehicle requests current

Output Relay / Contactor Feedback Mismatch

E18

Charger LEDs indicate error; unit refuses to charge when connected to certain vehicles but works with others

Vehicle Compatibility / Pilot Level Detection Issue

E19

Charger LEDs show error; unit indicates ‘leakage current’ even when no vehicle is connected

Internal Leakage / GFCI Nuisance Trip

E20

Charger LEDs indicate error; unit reports ‘temperature sensor fault’ or similar (if diagnostic available)

Temperature Sensor Open/Short

Symptom

Breaker feeding Grizzl‑E trips during or shortly after starting a charge session

Overcurrent / Branch Circuit Overload

Symptom

Charging is very slow compared to expected rate; no error codes on Grizzl‑E or vehicle

Reduced Charging Current / Derating

Symptom

Grizzl‑E cable insulation cracked or split, especially near handle or at strain relief

Mechanical Cable Damage

Symptom

Grizzl‑E charger completely dead; no LEDs, no response when breaker is ON

No Power / Dead Unit

Symptom

Grizzl‑E enclosure cracked or physically damaged (e.g., impact from vehicle or object)

Enclosure Integrity Compromised

Symptom

Grizzl‑E enclosure or cable emits a burning smell during or after charging

Overheating Component / Insulation Breakdown

Symptom

Grizzl‑E enclosure vibrates or rattles noticeably when contactor engages

Mechanical Vibration / Loose Mounting

Symptom

Grizzl‑E gets very hot to the touch during charging; may stop charging intermittently without code

Overheating Enclosure / Thermal Stress

Symptom

Grizzl‑E intermittently stops charging without any visible error; charging resumes after unplugging and reconnecting

Intermittent Connection / Cable or Pilot Interruption

Symptom

Grizzl‑E LEDs behave erratically in very cold weather; unit may fail to start charging until warmed

Cold Temperature Performance Issue

Symptom

Grizzl‑E LEDs flicker or dim when large household loads turn on or off

Supply Voltage Fluctuation / Line Sag

Symptom

Grizzl‑E LEDs show ready state but vehicle reports ‘Charging delayed’ or does not start until later

Perceived Charger Fault Due to Vehicle Scheduled Charging

Symptom

Grizzl‑E makes loud buzzing or chattering noises during charging

Noisy Contactor / Coil Hum

Symptom

J1772 handle becomes unusually warm or hot during charging

Overheating Connector / High Contact Resistance

Symptom

User receives mild shock or tingling when touching vehicle or Grizzl‑E during or after charging

Stray Voltage / Grounding Issue

Symptom

Vehicle charge port or Grizzl‑E connector shows signs of melting or burning

Thermal Damage at Connector Interface

Symptom

Vehicle does not start charging; Grizzl‑E LEDs show normal ready state; no error code

No Charge / EV Not Detecting EVSE

Symptom

Water or condensation visible inside Grizzl‑E enclosure; intermittent charging issues

Water Ingress / Moisture Contamination