Charger shows E14 and refuses to start; often associated with PEN fault detection on certain EO models.

Safety first: A PEN or neutral fault can create dangerous touch voltages. Do not attempt to bypass PEN protection. Only a qualified electrician should work on this fault.

• Verify earthing system: Confirm that the EO charger is installed according to EO's requirements for your local earthing system (e.g., TN‑C‑S, TT). Incorrect earthing can trigger PEN detection.
• Check neutral integrity: At the main distribution board, inspect and tighten the neutral conductor feeding the EO charger. Look for signs of overheating or discoloration.
• Measure voltages: Using appropriate equipment, measure line‑to‑earth and neutral‑to‑earth voltages at the charger. Abnormal readings should be investigated and corrected before re‑energizing.
• Inspect PEN detection module: On models with a dedicated PEN detection board or circuit, check connectors and look for physical damage.
• Consult EO and local regulations: Because PEN faults are safety‑critical and regulated, coordinate with EO technical support and follow local wiring rules. Replacement of the PEN detection module or reconfiguration of the earthing arrangement may be required.