F11
Dyson
Communication / Control Interface Fault
Dyson humidifier displays F11 and does not respond correctly to remote or app commands
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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
Failed IR receiver module, Faulty Wi‑Fi/Bluetooth communication board (for connected models), Corrupted control firmware, Loose interface board connector
How to Fix / Troubleshooting
Safety first: Unplug the unit before cleaning sensor windows or handling the device.
- 1. Check local controls: Try operating the unit using the physical buttons or touch controls on the device. If these work but the remote/app does not, the issue is with the communication interface.
- 2. Clean IR window: For IR remote models, locate the IR receiver window on the unit and clean it with a soft, dry cloth. Ensure there is a clear line of sight from the remote.
- 3. Replace remote batteries: Install fresh batteries in the remote and test again.
- 4. Network reset (connected models): Follow the user manual to reset Wi‑Fi/Bluetooth settings and re-pair the device with the app. Ensure your router is functioning correctly.
- 5. Firmware update: If available via the Dyson app, update the device firmware. Do not interrupt power during the update.
- 6. Persistent F11: If the error remains, the IR receiver or communication board may be defective and require replacement by a technician.
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Repair Difficulty
Medium
3/5
Required Part
IR Receiver / Communication Board
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