F7
Dyson Tilt / Tip-Over Sensor Fault

Dyson humidifier displays F7 and refuses to start, often after being moved or tipped

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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

Stuck or damaged tilt sensor, Faulty mercury-free tilt switch, Loose tilt sensor wiring, Misaligned base after impact

How to Fix / Troubleshooting

Safety first: Unplug the unit before handling. Ensure it is on a stable, level surface.

  • 1. Level the unit: Place the humidifier on a flat, solid surface. Avoid thick carpet or uneven flooring that can cause slight tilting.
  • 2. Power reset: Unplug for 5 minutes, then plug back in and try again. Some models need a full power cycle after a tip-over event.
  • 3. Gentle tap: With the unit unplugged, gently tap the sides of the base to free a possibly stuck tilt switch. Do not strike hard enough to crack the housing.
  • 4. Inspect for damage: If the unit was dropped, check the base for cracks or misalignment. Internal sensors may have been dislodged.
  • 5. Sensor replacement: If F7 persists even when the unit is clearly upright and stable, the tilt sensor or its wiring is likely faulty and must be replaced by a technician.
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Repair Difficulty

Medium 3/5

Required Part

Tilt Sensor
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