Display shows E10 and the charger appears dead or unresponsive except for the error code.

Safety first: Turn off the breaker before removing covers. Internal capacitors may hold charge; avoid touching exposed circuitry.

• Step 1 – Confirm line power: Verify the dedicated breaker is ON and not tripped. If tripped, reset once. If it trips again, stop and call an electrician.
• Step 2 – Check internal fuses: With power OFF and cover removed, locate any small control fuses on the main control board or power module. If a fuse is blown, investigate for shorts before replacing.
• Step 3 – Inspect harnesses: Ensure all low‑voltage harness connectors between the main control board and the user interface/display board are fully seated.
• Step 4 – Look for damage: Check for burnt components, bulging capacitors, or discoloration on the main control board.
• Step 5 – Board replacement: If the internal power supply is defective, the main control board typically must be replaced as a complete assembly by a qualified technician.