Vacuum will not charge, display shows E5 or charger LED flashes red when connected.

Safety first: Unplug the charger from the wall before inspecting connectors. Do not attempt to open the charger unless you are qualified.

• Step 1 – Outlet and charger test: Plug another device into the same outlet to confirm power. Then plug the Clatronic charger into a different outlet. If the charger LED never lights, replace the charger.
• Step 2 – Inspect charging port: Examine the DC jack on the vacuum or the contacts on the charging station for bent pins, corrosion, or dust. Clean gently with a dry brush. Ensure the plug fully seats with no wobble.
• Step 3 – Wiggle test: With the charger plugged into the vacuum, gently wiggle the connector. If the charging LED flickers, the jack is loose on the PCB and may need resoldering or replacement.
• Step 4 – Check for foreign objects: On models with docking stations, ensure no metal objects or debris are bridging the contacts.
• Step 5 – PCB repair or replacement: If a known-good charger still causes E5 and the jack is physically sound, the internal charge control circuit on the main PCB is likely defective. Replace the main control PCB or contact a service center.