Neato app displays 'Error 4000: Wi-Fi error' or robot cannot connect to network.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Weak Wi-Fi signal at dock, Incompatible Wi-Fi band (5 GHz vs 2.4 GHz), Corrupted network settings, Failing Wi-Fi module

Safety: No electrical disassembly required for basic troubleshooting.

Check Wi-Fi band: Ensure your router's 2.4 GHz network is enabled; many Neato models do not support 5 GHz.
Improve signal: Move the dock closer to the router or use a Wi-Fi extender.
Reset network settings: In the Neato app or on the robot, reset Wi-Fi settings and re-add the robot to your network.
If still failing: A defective Wi-Fi module on the main PCB may be the cause and would require board replacement.

Medium 3/5

Main Control PCB (Wi-Fi Module)

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