Lectron charger shows E05 and does not charge; often associated with incorrect or unstable supply voltage.

Safety first: This involves live mains wiring. Turn OFF the breaker and use proper PPE. If you are not an electrician, do not open the wiring compartment.

• 1. Confirm model rating: Check the Lectron charger nameplate for required input voltage (e.g., 208–240 V). Ensure your supply matches this rating.
• 2. Inspect wiring connections: With power OFF and cover removed, verify that the line conductors are firmly secured in the Lectron terminal block and that there are no signs of overheating or discoloration. Tighten loose terminals to manufacturer torque specs.
• 3. Measure supply voltage: With a multimeter and appropriate safety precautions, measure voltage at the input terminals with power ON. Confirm it is within Lectron’s specified range. Large deviations (e.g., below 200 V or above 250 V) can trigger E05.
• 4. Check breaker and wire size: Ensure the breaker amperage and wire gauge match Lectron installation instructions. Undersized wiring can cause voltage drop under load.

Next steps: If supply voltage is unstable or out of spec, contact your electrician or utility provider. If voltage is correct but E05 persists, the internal power supply or sensing circuit on the main control board may be defective and require replacement.