Lectron EV charger displays E18 and stops charging; may be associated with relay self-test failure at startup.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Auxiliary relay contacts not opening, Faulty feedback circuit on main board, Mechanical obstruction in relay

Safety first: Turn OFF the breaker. Do not attempt to force or bypass relays.

1. Power reset: Turn OFF the breaker for 5 minutes, then ON. Observe whether E18 recurs.
2. Internal inspection: With power OFF, inspect the main board relays for signs of overheating or mechanical damage.

Resolution: Replace the main control board if E18 persists. Individual relay replacement is not recommended for end users.

Professional Required 5/5

Lectron Main Control Board

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