the brush roll on my shark cordless pro keeps stopping on my medium pile carpet.

Diagnosis

This issue is caused by the Shark IZ562H's integrated "Brushroll Protection" system. The motor uses a current-sensing circuit that monitors the electrical load on the brushroll motor. When the brushroll encounters excessive resistance—such as dense medium-pile carpet fibers or a buildup of hair and debris—the motor draws more current. To prevent the motor from burning out or the drive belt from snapping, the vacuum triggers a safety shut-off, effectively "tripping" the brushroll. You can confirm this is the root cause if the vacuum's suction remains strong (you can feel air moving through the hose) but the brushroll has completely stopped spinning. If you notice the brushroll stops specifically when you push the vacuum head deeper into the carpet pile, it is a sign that the friction is exceeding the torque limit of the motor, triggering the safety clutch.

How to Fix It

Follow these precise steps to clear the obstruction and reset the motor's operational threshold:

1. Power off the vacuum and remove the battery pack to ensure the unit cannot accidentally activate during maintenance.
2. Lay the vacuum flat on its back. Locate the brushroll assembly at the bottom of the floor nozzle.
3. Use a pair of heavy-duty scissors or a seam ripper to cut through the hair and string wrapped around the brushroll. Focus specifically on the two end-caps (the bearings), as hair tends to bunch up here, creating a "collar" that increases friction.
4. Pull all debris out by hand. If the brushroll is heavily fouled, use a screwdriver to remove the retaining clip on the side of the nozzle to slide the brushroll entirely out of the housing for a deeper clean.
5. Check the "Air Path" directly behind the brushroll. Use a flashlight to ensure no large debris (like a coin or small toy) is wedged between the brushroll and the suction intake, as this creates artificial resistance.
6. Reinsert the battery and select the "Medium" or "High" power setting. On medium-pile carpets, the "Low" setting may not provide enough torque to overcome the carpet's resistance, causing the safety trip.

If That Didn't Work

• Inspect the Drive Belt: If the motor is humming but the brushroll isn't turning, the internal rubber belt may have stretched or slipped. Remove the nozzle cover and check for a loose or snapped belt. If the belt is slack, it will slip on medium-pile carpets, triggering the sensor.
• Clean the Floor Nozzle Bearings: Dust and fine grit often enter the side bearings of the brushroll. Apply a tiny drop of silicone-based lubricant to the axle ends. Do not use WD-40, as it attracts more dust and will eventually seize the roll.
• Check for "Carpet Flattening": If your carpet has a high density of synthetic fibers, the vacuum head may be "sealing" too tightly to the floor, creating a vacuum lock that prevents the brushroll from spinning. Try lifting the head slightly as you push forward to reduce the seal.
• Reset the Electronics: Perform a hard reset by removing the battery for 60 seconds and then holding the power button for 10 seconds while the battery is out to discharge any remaining capacitors before re-inserting the battery.

Heads Up

• Hair Maintenance: To prevent future shutdowns, clear the brushroll every two weeks. The IZ562H is prone to "hair wrapping" at the edges, which is the primary cause of motor overload.
• Surface Selection: Always ensure you are using the correct power mode. Using "Eco" mode on medium-pile carpet often results in the brushroll stopping because the voltage is too low to maintain torque.
• Avoid Wet Carpets: Never use this vacuum on damp carpets. Moisture increases the friction of the fibers significantly, which will trip the safety sensor almost instantly.
• Check the Filter: A clogged HEPA filter can actually cause the brushroll to stop. If the air cannot flow, the motor works harder, increasing the overall heat of the unit and making the safety sensors more sensitive.