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My iRobot Create is playing a tune about every 30 seconds and continuously flashing a red light when I attempt to charge it. What is the issue?

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From the iRobot support site, List of Roomba 400/Discovery error codes:

As Roomba cleans, it communicates with songs, beeps, and indicator lights. It also uses sounds to let you know when there's a problem or it needs maintenance. Here are the most common error codes and what they mean. If the problem cannot be resolved, contact iRobot Customer Care.

Your particular issue, if the tune being played is a 4-note tune (in conjunction with the flashing Power Button red LED, is due to a low battery which requires charging:

iRobot Low battery error

As it says:

Connect Roomba to a battery charger (or Home Base) and recharge the battery.

As your iRobot is continuously making this tune, even whilst charging, this would suggest that either:

  • the battery is not taking on any charge (i.e. it is dead), or;
  • the charging circuitry (within the iRobot) is not detecting the charge current, and assumes that it is not plugged in. As a sanity check, verify that the charger is working, and that the connections are OK. Otherwise, maybe the charging circuit is defective, and needs maintenance, or replacing?

This is what should happen, during the charge cycle: Roomba 400 Series/Discovery Battery and Charging Overview.

Under normal conditions, Roomba should charge in this manner:

  • Your Battery Charger should have a solid green light on when it is plugged into a wall outlet charging Roomba.
  • Your Home Base, if you have one, should have two solid green lights (one for Power and one for Docked) when it is plugged into the Charger and Roomba is charging.
  • Your Roomba’s POWER light should pulse red/amber while charging. Charging time under normal conditions is between 3 – 6 hours depending on your Battery Charger. Charging could take up to 16 hours if your battery is deeply discharged at the beginning of the charge cycle.
  • When the charging cycle is complete, the POWER light on Roomba will turn solid green.

While Roomba is running, the POWER light will display the state of the battery as follows:

  • Green - fully charged
  • Amber - partially discharged
  • Red - nearly discharged
  • Flashing Red - discharged

Always store Roomba charging on the Home Base or with the Charger plugged into the robot. For long-term storage, iRobot recommends that the battery be fully charged and then removed from the robot and stored in a cool, dry place.

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  • $\begingroup$ I get this tune while I am charging, is there any way to charge the Roomba quietly? $\endgroup$ – Gerard Feb 18 '16 at 17:27
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    $\begingroup$ Thank you, the issue has been resolved. My battery is dead. $\endgroup$ – Gerard Feb 18 '16 at 18:43

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