Robot vacuum shows E20 and cannot start; often associated with overheating.

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

Blocked ventilation, Fan motor overheating, Ambient temperature too high, Temperature sensor fault on main board

Safety: Turn off the robot and unplug the dock if necessary.

Allow cooling: Let the robot sit powered off for at least 30 minutes in a cool, ventilated area.
Check vents: Inspect and clean any air vents on the robot body using a soft brush.
Reduce load: Remove the mopping module and ensure brushes and filters are clean to reduce motor strain.
Test again: After cooling, power on and run a short cleaning cycle.
If E20 recurs quickly: The internal temperature sensor or fan motor may be defective, requiring main board or fan replacement.

Hard 4/5

Laresar Temperature Sensor / Fan Assembly

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