Error 1

How to Fix It

1. Pick the robot up and flip it over.

   You'll see two large drive wheels on either side, plus a small caster wheel at the front.
   Look at each wheel — anything wrapped around the axle?
   Even a thin strand of hair can disconnect the encoder reading.

2. Pull out tangled hair or fibers.

   Use scissors or your fingers to remove anything wrapped around the wheel axle.
   Pull from the side — slip a finger under the wheel housing if needed.
   Dental floss works for hair that's wedged tight.
   Don't yank — work it loose.

3. Press each wheel down by hand.

   Each drive wheel should spring back when you push it up into the body.
   If a wheel feels mushy or stays pushed in, the suspension spring is jammed.
   Tap the wheel a few times — sometimes it pops free.

4. Set the robot on a flat hard floor.

   Don't restart it on a thick rug or soft carpet — the wheel suspension may not extend properly on soft surfaces.
   Tile, hardwood, or laminate is best for the test.
   Press Clean and watch — does it move forward smoothly?

5. Reset the robot if Error 1 persists.

   Hold the Clean button for 10 seconds until the robot beeps.
   This power-cycles the internal controller and clears stuck error states.
   If Error 1 returns within seconds of starting, the wheel encoder has likely failed and the wheel module needs replacement.