Robot vacuum reports E7 and cannot find or charge on the dock

Safety first: Unplug the charging dock from the wall before cleaning the contacts.

• 1. Inspect dock power: Verify that the dock's power LED is lit when plugged in. If not, check the outlet and power adapter.
• 2. Clean charging contacts: On the robot, locate the metal charging pads; on the dock, locate the matching contacts. Wipe both with a dry microfiber cloth. For heavy oxidation, lightly rub with a pencil eraser, then wipe them clean.
• 3. Check spring pins: On some Trifo docks, the contacts are spring-loaded pins. Press each pin gently to ensure it moves freely and springs back. If a pin is stuck, carefully work it in and out while cleaning it.
• 4. Confirm alignment: Place the dock against a wall on a hard, flat surface. Start the robot and press the Home button in the app or on the robot. Watch to ensure it approaches the dock straight and makes full contact.
• 5. Internal harness check (advanced): If the robot docks but does not charge, open the robot and verify that the charging contact harness is firmly connected to the main board and is not corroded.

Warning: Never short-circuit the charging contacts with metal tools. If you smell burning or see melted plastic around the contacts, discontinue use and seek professional repair.