Display shows E04; charger will not start and may indicate ‘Line Voltage Error’ or ‘Supply Out of Range’.

Safety first: Turn OFF the breaker before opening any electrical panel or the Lucid charger. Use a qualified electrician if you are not experienced with high-voltage wiring.

Steps:

• Confirm breaker rating: Verify the Lucid charger is on the correct double-pole breaker size specified in the installation manual (commonly 40–60A depending on model).
• Check for two hot legs: At the service panel, ensure the breaker feeds two hot legs (L1 and L2) and not a single-pole or miswired breaker.
• Inspect input terminals: With the charger cover removed and power OFF, check that L1, L2, and ground are securely tightened on the Lucid input terminal block. Look for discoloration or melted insulation.
• Measure voltage (qualified only): With power ON and using a multimeter, measure L1–L2 at the Lucid charger input. It should be within the specified range (typically 208–240 VAC). If below spec, wiring length or gauge may be inadequate.

Resolution: Correct any wiring errors, tighten loose terminals to the torque specified by Lucid, and if necessary upgrade conductor size to reduce voltage drop. After corrections, power-cycle the charger and confirm E04 clears.