Dyson Vacuum Cleaner F7 Error Code Fix

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What This Error Means

F7 means Main Brush Bar Fault on Dyson robot vacuums like the 360 Eye and 360 Heurist. The machine thinks the floor brush cannot spin freely or its drive motor is overloaded, so it shuts down to protect the motor and control board.

Official Fix

This is the basic, manual-approved path. Do this first before you spend money on parts.
  • Turn the machine off and make it safe. Take it off the dock. If your model has a master power switch, turn it off. Do not work on it while it is trying to run.
  • Flip the vacuum onto a soft surface. Bottom side up so you can see the main brush bar.
  • Remove the main brush bar. Open the brush cover latch, swing the cover up, and lift the bar straight out.
  • Strip all hair and string from the bristles. Use scissors along the grooves in the brush, then pull the junk off by hand. Get every wrap, especially near the ends.
  • Pull off the end caps or bearings on each end of the brush. Gently pry them off. Clean the hair packed under them and around the shafts. If you leave hair there, F7 comes right back.
  • Clean the brush housing. Check the channel the brush sits in and the suction opening behind it. Pull out clogs, stones, kids toys, anything that could stall the brush.
  • Spin the bare brush by hand. It should spin very freely with almost no resistance. If it feels tight, gritty, or stops quickly, keep cleaning the end caps and shafts. If it still drags after a proper clean, the bearings are worn and the brush bar should be replaced.
  • Inspect the drive end of the brush. Look at the shaped drive socket or spline. If it is rounded off, melted, or cracked, the motor cannot drive it correctly. That is a new brush bar job.
  • Check around the brush cover and side walls. Make sure no carpet fibers or hard debris are wedged where the brush height wheels or pivots move, if your model has them.
  • Reassemble. Push the end caps fully back on, seat the brush in its recess, and close the cover until it clicks solidly on both sides.
  • Power it back up. Put the robot on the floor, turn the power back on, and start a clean cycle. Watch the brush for the first minute. If it spins smoothly and F7 does not come back, the official fix worked.
If you have fully cleaned and reassembled the brush area and F7 still appears, the official line from Dyson is that you likely have a failing brush motor or control board and the unit should be checked or serviced by Dyson or an authorized shop.

The Technician’s Trick

When a basic clean does not kill F7, this is how a tech separates cheap fixes from expensive ones.

  • Run it with the brush removed. Take the main brush bar out, close the cover with no brush installed, then start a clean. If it throws F7 immediately with no brush fitted, the fault is in the brush motor, gearbox, or sensor circuit, not the bar. If it runs fine without the bar, your brush assembly is the problem and a replacement bar usually fixes it.
  • Reseat the brush cover hard. Many F7 calls are just a lazy cover latch. Open the cover, then close it while pressing along the length until you feel solid clicks at every latch point. A half latched cover can stop the brush and fake an F7 jam.
  • Free sticky bearings with dry lube. If the brush spins but feels stiff, put a tiny drop of dry PTFE or silicone spray on the brush shaft where it sits in the end cap, then wipe off the excess and spin it by hand for a minute. Do not use greasy oil. Oil grabs hair and you will be back at F7 in a week.
  • Hard reset after a jam. Switch the main power off or pull the plug, hold the start or clean button for about 10 seconds to bleed any stored charge, wait a full minute, then power it back up and test again. This clears some stubborn F7 flags after a serious stall.
  • Listen to the motor. With the brush removed, start a clean and listen to the brush drive area. A smooth whirr is normal. A loud whine, grinding, or squeal means the brush motor or gearbox is dying. At that point, it is a parts call, not a cleaning issue.

Is It Worth Fixing? (The Financial Verdict)

  • ✅ Fix: Robot is under about 6–7 years old, battery still gives decent run time, and F7 goes away with a proper clean or a new brush bar or end caps. Parts and effort are cheap compared to a new Dyson.
  • ⚠️ Debatable: F7 needs a new brush motor module and maybe a battery, but the shell and rest of the machine are fine. If the combined parts cost creeps toward a couple of hundred, think about how much you actually like this robot.
  • ❌ Replace: F7 is traced to a bad main board, cracked chassis around the brush housing, or a repair quote that is more than about 40–50 percent of a solid new robot or stick vacuum. Put that money into a newer machine instead.

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