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

Safety first: Isolate the charger at the main supply and verify dead before removing the cover. The contactor carries mains voltage.

• Listen for contactor operation: When you start a charge, you should hear a distinct click from inside the charger. No click suggests the contactor is not energising; a continuous hum or repeated clicking may indicate a failing coil.
• Visual inspection: With power isolated and cover removed, locate the main contactor (usually a DIN‑rail mounted relay). Check for heat discoloration, melted plastic, or loose spade/terminal connections on the line and load sides.
• Check control wiring: Confirm that the low‑voltage control wires from the Rolec control PCB to the contactor coil are secure and not damaged. Tug gently to ensure they are firmly clamped.
• Test coil resistance (qualified person only): Using a multimeter, measure the coil resistance and compare with the contactor datasheet. An open circuit or very low resistance indicates a failed coil.
• Replace if defective: If the contactor is burnt, welded, or the coil is open, replace it with the same specification part recommended by Rolec. After replacement, re‑torque all terminals to the manufacturer’s spec and re‑test.