iRobot error codes and fault guides
Browse 15 published, evidence-gated iRobot guides. Each page states the supported model and region, official source, safe checks, and the point to stop.
iRobot fault guides
1–15 of 15
The robot cannot detect an installed battery
Charging Error 1 is identified by iRobot support as the robot cannot detect an installed battery. Follow the model-scoped external checks and service boundary below.
The Roomba Home app reports that the robot cannot detect its battery
Charging Error 101 is identified by iRobot support as the roomba home app reports that the robot cannot detect its battery. Follow the model-scoped external checks and service boundary below.
No electrical current is reaching the robot
Charging Error 104 is identified by iRobot support as no electrical current is reaching the robot. Follow the model-scoped external checks and service boundary below.
Low electrical current is reaching the robot
Charging Error 105 is identified by iRobot support as low electrical current is reaching the robot. Follow the model-scoped external checks and service boundary below.
The robot has detected a battery hardware fault
Charging Error 11 is identified by iRobot support as the robot has detected a battery hardware fault. Follow the model-scoped external checks and service boundary below.
The robot may not recognise the battery as authentic
Charging Error 17 is identified by iRobot support as the robot may not recognise the battery as authentic. Follow the model-scoped external checks and service boundary below.
Charging timed out before the battery reached a normal charge
Charging Error 19 is identified by iRobot support as charging timed out before the battery reached a normal charge. Follow the model-scoped external checks and service boundary below.
The robot has detected a charging over-current fault
Charging Error 2 is identified by iRobot support as the robot has detected a charging over-current fault. Follow the model-scoped external checks and service boundary below.
The battery has failed or is not ready to charge
Charging Error 20 is identified by iRobot support as the battery has failed or is not ready to charge. Follow the model-scoped external checks and service boundary below.
The robot is docked but cannot maintain charging
Charging Error 21 is identified by iRobot support as the robot is docked but cannot maintain charging. Follow the model-scoped external checks and service boundary below.
The robot has detected a charging-system fault
Charging Error 3 is identified by iRobot support as the robot has detected a charging-system fault. Follow the model-scoped external checks and service boundary below.
The dock or robot has a no-current or low-current charging fault
Charging Error 4 / 5 is identified by iRobot support as the dock or robot has a no-current or low-current charging fault. Follow the model-scoped external checks and service boundary below.
The battery temperature is too high or too low for charging
Charging Error 6 / 7 is identified by iRobot support as the battery temperature is too high or too low for charging. Follow the model-scoped external checks and service boundary below.
The robot cannot communicate correctly with its battery
iRobot identifies Charging Error 8 as a battery-communication fault. Confirm the exact message before using the battery and charging-contact checks.
The robot has detected a battery failure
Charging Error 9 is identified by iRobot support as the robot has detected a battery failure. Follow the model-scoped external checks and service boundary below.