Error 15

How to Fix It

1. Hold the Clean button for 20 seconds.

   Press and hold Clean continuously for 20 seconds — past the point where it normally responds.
   The Roomba's lights will fade out, indicating a hard shutdown.
   This isn't the soft pause; it's a full reboot.

2. Wait 10 seconds, then press Clean once.

   Give the robot a moment to fully power down.
   Press Clean once — you should hear the startup chime.
   Error 15 is almost always cleared at this point.

3. Charge the robot fully.

   If the battery is low, brownouts can trigger Error 15.
   Set the Roomba on its dock and let it charge to full (around 3 hours from empty) before running another cleaning job.

4. Update firmware via the iRobot HOME app.

   Open the app, go to your Roomba's settings, and check for a firmware update.
   iRobot pushes fixes regularly — running outdated firmware is a common cause of repeat Error 15.
   The update happens overnight on the dock with Wi-Fi connected.

5. Contact iRobot support if it persists.

   If Error 15 returns after a reboot and a firmware update, the main board may have a fault.
   iRobot's support team can run remote diagnostics through the app.
   Out-of-warranty replacement is usually cheaper than full repair on older models.