my bespoke jet bot combo is showing 'error 26' and just sits there beeping, what is that?

Diagnosis

Error 26 on the Samsung Bespoke Jet Bot Combo AI is a critical "Main Brush Obstruction" alert. This occurs when the robot's onboard current sensors detect that the motor driving the main roller brush is drawing excessive amperage, indicating that the brush cannot rotate at its required RPM. This is almost always caused by physical resistance—typically long hair, carpet fibers, or a foreign object like a piece of plastic or a thick string—winding tightly around the brush axle or the drive gear. When the brush is jammed, the system triggers a safety shutdown to prevent the motor from overheating or burning out. You can confirm this by attempting to manually rotate the brush with your finger while the unit is off; if it feels stiff or refuses to budge, the obstruction is internal. In some cases, the error is triggered not by the brush itself, but by a debris buildup in the brush housing that prevents the roller from sitting flush, causing it to rub against the plastic chassis.

How to Fix It

To resolve Error 26, you must perform a deep clean of the brush assembly to remove all resistive materials. Follow these exact steps:

1. Power down the unit completely by pressing the power button on the top of the chassis until the lights go off.
2. Carefully flip the robot over onto a soft surface to avoid scratching the AI sensors or the mop pads.
3. Locate the two plastic release latches on the main brush cover. Press these firmly inward and lift the cover plate upward to expose the main roller.
4. Grasp the brush roller and pull it straight out of the housing. Note that if the brush is heavily jammed, you may need to wiggle it slightly to break the vacuum seal.
5. Inspect both ends of the roller. Remove the end caps (if applicable to your specific regional sub-model) to access the axle.
6. Use a pair of sharp scissors or a seam ripper to cut through hair and string wound around the bristles. Do not pull the hair forcefully, as this can warp the bristles or damage the plastic axle.
7. Use a microfiber cloth to wipe the interior of the brush housing, specifically the gear teeth on the left side, to ensure no debris is interfering with the drive mechanism.
8. Reinsert the brush, ensuring the alignment notches click firmly into place. Press the cover plate back down until you hear a distinct click on both sides.
9. Flip the robot back over and initiate a "Test Run" via the SmartThings app to verify the error has cleared.

If That Didn't Work

• Check the Side Spinners: While Error 26 specifically targets the main brush, a severely jammed side brush can occasionally cause a system-wide motor error. Remove the side brush by unscrewing the single Phillips head screw, clear any hair from the gear peg, and reinstall.
• Inspect the Drive Belt: If the brush is clean but the error persists, the internal drive belt may have slipped or snapped. Gently try to rotate the drive gear in the housing with a small screwdriver; if it spins freely without any resistance from the motor, the belt has failed and the brush assembly requires professional replacement.
• Hard Reset the AI Logic: Occasionally, the error persists in the cache. Hold the power button and the "Home" button simultaneously for 10 seconds to force a hard reboot of the onboard controller.
• Clean the Wheel Modules: Check the main drive wheels for jammed pebbles or debris. If the wheels cannot move the robot forward while the brush is spinning, the system may misinterpret the lack of movement as a brush jam.

Heads Up

• Avoid Wet Cleaning the Brush: Never rinse the main roller brush under a tap. Water can seep into the axle bearings, causing rust and permanent motor failure, which will trigger a permanent Error 26.
• Routine Maintenance: To prevent this error, clear the brush every two weeks if you have pets or long-haired residents. The AI sensors cannot detect hair buildup until the motor is already struggling.
• Manual Restart Required: After clearing a brush jam, the Bespoke Jet Bot will not automatically resume its path. You must manually restart the cleaning cycle via the SmartThings app or the physical button.
• Avoid Thick Rugs: If you encounter Error 26 frequently on a specific rug, the pile may be too high for the AI's torque limit. Use the "No-Go Zone" feature in the app to avoid these areas.