Error 1008 means the Roomba Combo j7+ mop actuator could not move. Remove nearby obstacles and reboot before requesting service. Treat the displayed pattern as a diagnostic clue, not as proof that a module must be replaced. Keep the robot on a level, well-lit surface and change one condition at a time so the result remains meaningful. What the alert means: The retractable mop actuator met an obstruction or tried to move while the robot was in a tight space. What to distinguish first: Check whether furniture, cables or the dock wall restrict the rear actuator, rather than pulling the moving arm by hand. 1. Confirm the exact symptom — The retractable mop actuator met an obstruction or tried to move while the robot was in a tight space. 2. Prepare safely — Power the robot off, remove it from the dock and place it upside down on a protected table. 3. Apply the official check — Move the robot to an open area, clear obstructions, hold Clean for 20 seconds to reboot, then return it to the dock. 4. Interpret one retest — Run one mop deployment test in open space. A repeated 1008 without obstruction requires iRobot support. The official iRobot procedure identifies this exact symptom and supports the checks above. Remove loose hair with a dry tool only; never wet the contacts, wheel wells or motor modules. Stop if a wheel, extractor or actuator remains locked after cleaning, or if the same error returns after one reboot.
Models covered
Safety first
- Remove loose hair with a dry tool only; never wet the contacts, wheel wells or motor modules.
What the symptom may indicate
Checks in the right order
- Confirm the exact symptom
The retractable mop actuator met an obstruction or tried to move while the robot was in a tight space.
- Prepare safely
Power the robot off, remove it from the dock and place it upside down on a protected table.
- Apply the official check
Move the robot to an open area, clear obstructions, hold Clean for 20 seconds to reboot, then return it to the dock.
- Interpret one retest
Run one mop deployment test in open space. A repeated 1008 without obstruction requires iRobot support.
Stop and get qualified help when
- Stop if a wheel, extractor or actuator remains locked after cleaning, or if the same error returns after one reboot.
Next step
Repair, replace a part, or arrange a diagnosis?
Use the checks and stop conditions above to choose a cautious next step. A symptom alone never proves that the appliance has failed.
Resolve it without buying anything
Complete the 4 user-accessible checks in order. If normal operation returns and no warning sign remains, no replacement is indicated.
Replace only the confirmed part
If the checks isolate a worn or blocked component, match its complete reference to the exact appliance model before ordering.
This guide does not identify a replacement part. Do not order a generic component from the symptom alone.
Arrange a diagnosis before replacing the appliance
Stop at any warning sign listed above. A qualified diagnosis should confirm that repair is unsafe, unavailable or uneconomical before an appliance replacement is considered.
Sources used
- iRobot — The official iRobot procedure identifies this exact symptom and supports the checks above.
Last checked: 30 August 2026