Dyson humidifier displays F13 and stops, often when room is very cold or very hot

Safety first: Ensure the unit is used only within the temperature range specified in the user manual.

• 1. Check room temperature: Use a separate thermometer to verify the room temperature. Most Dyson humidifiers are designed for typical indoor conditions (roughly 5–40°C / 41–104°F).
• 2. Relocate the unit: Move the humidifier away from direct sunlight, heaters, radiators, or cold drafts (e.g., near open windows) that can cause extreme readings.
• 3. Allow stabilization: Let the unit sit unplugged in the new location for 30 minutes, then plug in and test again.
• 4. Sensor fault: If F13 appears even in normal room conditions, the ambient temperature sensor or its circuit may be faulty and require replacement.