Dyson Air Purifier Error Code F7: How to Fix It

Easy 5-15 minutes Medium Severity Verified June 2026
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Error Code
F7
Brand
Dyson
Product Type
air_purifier
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
5-15 minutes
Error code F7 on your Dyson air purifier indicates a night mode timer error. This usually means the scheduled night mode settings are conflicting or corrupted. Follow these steps to reset the timer and clear the error.
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How to Fix Error Code F7

  1. Power Cycle the Purifier

    Always unplug before handling to avoid electrical shock.

  2. Reset Night Mode Timer

  3. Check for Firmware Updates

    Ensure your phone is connected to Wi-Fi and the purifier is online.

  4. Factory Reset

    Factory reset will erase all saved preferences.

  5. Check Power Supply

    Use only the original power adapter provided by Dyson.
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When to Call a Professional

If error F7 persists after factory reset and firmware update, the internal timer module may be faulty. Contact Dyson customer support or an authorized technician for repair.

Frequently Asked Questions

What does error code F7 mean on a Dyson air purifier?
F7 indicates a night mode timer error, meaning the scheduled timer for night mode is not working correctly.
How do I reset the night mode timer on my Dyson purifier?
Go to settings via the machine or Dyson Link app, disable the night mode timer, and re-enable it with the correct time.
Will a power cycle fix error F7?
Yes, unplugging the purifier for 60 seconds and plugging it back often clears temporary glitches causing the error.
Can a firmware update fix error code F7?
Yes, Dyson release firmware updates that fix bugs including timer errors. Check for updates in the Dyson Link app.
What if error F7 keeps coming back?
Try a factory reset. If the error returns, contact Dyson support as the timer hardware may need replacement.

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