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

Safety first: Isolate the charger at the main supply and verify it is 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 energizing; a continuous hum or repeated clicking may indicate a failing coil.
• Visual inspection: With power isolated and the 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 it 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 specifications and re-test.