E10
Dyson Moisture / Humidity Sensor Triggered

Display shows E10 and machine will not start, often after storage in a damp area

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Safety Warning

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.

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Possible Causes

Condensation inside electronics, Moisture on main PCB, Wet filters or tanks installed, Corroded low-voltage connectors

How to Fix / Troubleshooting

Safety first: Unplug the machine immediately if you suspect internal moisture. Do not operate until fully dry.

  • Remove tanks and filters: Take out clean and dirty water tanks and all filters. Ensure they are completely dry. Never install wet filters.
  • Dry the unit: Place the machine in a warm, dry room for 24–48 hours. Do not use direct heat sources (hair dryers, heaters) that could warp plastic.
  • Inspect for visible moisture: Look through vents and around the base for signs of water ingress. If the machine was exposed to a spill or flooding, internal components may be compromised.
  • Test after drying: Reinstall dry filters and tanks, then power on. If E10 persists, internal sensors or the PCB may be damaged and require professional service.
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Repair Difficulty

Medium 3/5

Required Part

Main Control PCB
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