E14
Lectron Insulation Resistance / Isolation Fault

Lectron EV charger displays E14 and refuses to charge; often associated with failed insulation resistance test.

Advertisements

Safety Warning

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.

Advertisements

Possible Causes

Moisture ingress into cable or connector, Damaged insulation on internal wiring, Contamination on main board causing leakage

How to Fix / Troubleshooting

Safety first: An insulation fault can present a shock hazard. Turn OFF the breaker and do not use the charger until the issue is resolved.

  • 1. Inspect cable and connector: Check the entire length of the Lectron charge cable for cuts, abrasions, or crushed sections. Inspect the J1772 handle for cracks or signs of water ingress.
  • 2. Check enclosure seals: Verify that the Lectron housing gasket is intact and that all screws are tight. Inspect cable glands for proper compression and sealing.
  • 3. Internal visual check: With power OFF and cover removed, look for water marks, corrosion, or carbon tracking on the main control board and wiring. Any sign of water inside indicates compromised sealing.

Resolution: Replace any damaged cable assemblies. If the main board or internal wiring shows signs of moisture or tracking, replace the affected components or the entire EVSE. Improve weatherproofing or relocate the unit to prevent recurrence.

Advertisements

Repair Difficulty

Professional Required 5/5

Required Part

Lectron J1772 Charge Cable Assembly
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements