Charger shows E18; unit may not detect that the connector has been unplugged or may keep the relay engaged.

Safety first: Turn OFF power before working near internal wiring. Do not rely on the charger to de-energize if it misdetects connector presence.

• 1. Inspect holster and latch: Many Besenergy wall units have a holster or dock with a sensor. Check for dirt, debris, or mechanical obstruction preventing the latch from moving freely. Clean and lubricate lightly if needed (use plastic-safe lubricant).
• 2. Listen for switch click: Insert and remove the connector from the holster while listening for a faint click from a microswitch. No click may indicate a failed switch.
• 3. Internal wiring check (qualified): With power OFF, open the charger and trace the latch sensor wires to the main board. Ensure they are intact and firmly connected.
• 4. Replace latch sensor: If the switch or sensor is physically damaged or does not change state when actuated (requires meter), replace the latch sensor assembly.
• 5. Main board input fault: If the sensor tests good but E18 persists, the input circuit on the main control board may be defective and require board replacement.

When to call a professional: For sensor or board replacement, contact a qualified technician.