Charger shows E09 and refuses to start; often associated with tripping of upstream breaker or RCD/GFCI.

Safety first: Do not repeatedly reset a tripping breaker or RCD. A short circuit can cause fire or electric shock. Leave the circuit off until the fault is identified.

• 1. Visual inspection:
  • Unplug the Megear charger and inspect the cable and housing for burn marks, melted plastic, or signs of water ingress.
  • If the unit has been exposed to flooding or heavy rain, do not use it until fully inspected and dried by a professional.
• 2. Isolate the charger:
  • With the charger unplugged, reset the breaker/RCD.
  • If it holds without the charger connected, the fault is likely in the charger or its cable.
• 3. Resistance checks (advanced):
  • With the charger disconnected from power, measure resistance between line and ground pins on the plug and J1772 connector.
  • Any low resistance indicates a short and the unit should not be used.
• 4. Internal inspection:
  • Open the housing and look for obvious shorts: carbon tracking, melted insulation, or metal debris bridging terminals.
  • If found, the safest repair is replacement of the affected board or entire unit.

Because E09 indicates a serious electrical fault, replacement of the Megear charger is often more economical and safer than repair. Consult a qualified EVSE technician.