clean base on my j7+ isn't emptying the robot, it just makes a whirring noise then stops.

Diagnosis

The "whirring noise" without actual debris movement indicates that the Clean Base motor is engaging and spinning, but it is fighting against a vacuum seal failure or a physical atmospheric blockage. In the j7+ system, the suction path is a precise vacuum tunnel; if the airflow is interrupted, the motor spins at high RPMs but cannot create the pressure differential necessary to pull debris out of the robot's internal bin. This most commonly occurs when a "plug" of compressed pet hair, cardboard scraps, or heavy clumps of dust settles exactly at the junction where the robot's bin meets the Clean Base's intake port. You can confirm this by checking the robot's bin after a failed empty cycle; if the bin is still full but the Clean Base sounds like it is "straining," you have a blockage. If the bin is empty but the bag is empty, you likely have a torn bag or a seal leak, meaning the air is bypassing the bag entirely.

How to Fix It

Follow these steps in exact order to clear the airflow path and restore suction:

1. Inspect the Clean Base Bag: Open the lid of the Clean Base. Remove the disposable bag and check for any punctures or tears. Ensure the cardboard collar of the bag is pushed firmly into the plastic sleeve of the base. If the collar is loose, the vacuum will leak air here instead of pulling from the robot.
2. Clear the Robot's Evacuation Port: Remove the dust bin from the j7+ robot. Look at the rear of the bin where the orange rubber seal is located. Use a flashlight to peer into the robot's chassis where the bin normally sits. If you see a clump of debris blocking the intake port, use a pair of tweezers or a vacuum hose to extract it.
3. Clear the Base Intake Tunnel: Look into the opening of the Clean Base where the robot docks. Use a flashlight to check for any large debris (like a coin or a pebble) that may have been sucked into the tunnel but stopped before reaching the bag.
4. Perform a Hard Reset: Press and hold the CLEAN button on the robot for 20 seconds until the light ring flashes. This clears any software-level "blockage" errors and forces the robot to re-calibrate the docking sequence.
5. Test Cycle: Place the robot back on the base and manually trigger an empty cycle using the iRobot Home App to see if the debris now moves.

If That Didn't Work

• Deep Clean the Bin Seal: Inspect the rubber gasket around the robot's bin. If dust or hair is caked onto the seal, it won't create an airtight connection with the Clean Base. Wipe the seal with a damp microfiber cloth and dry it completely before re-inserting.
• Check the Internal Base Filter: Reach inside the Clean Base (with the bag removed) and locate the small foam filter at the bottom of the bag chamber. If this is clogged with fine dust, the motor cannot pull air through the system. Remove it and tap it firmly against a hard surface to dislodge the dust.
• Verify Power Stability: Ensure the Clean Base is plugged directly into a wall outlet rather than a surge protector or extension cord. The high-draw motor required for emptying can sometimes trigger a voltage drop in cheap power strips, causing the motor to spin without reaching full suction power.
• Inspect the Base Valve: Check the plastic flap valve inside the Clean Base intake. If this flap is stuck in the "closed" position due to debris, the motor will whir, but no air will pass through to the bag. Gently nudge it with a plastic probe to ensure it moves freely.

Heads Up

• Bag Integrity: Never operate the Clean Base without a bag installed. Doing so will send fine dust directly into the motor assembly, which can lead to permanent motor failure and void your warranty.
• Generic Bag Warning: Avoid using third-party "compatible" bags. These often have slightly different cardboard collar dimensions that prevent a perfect airtight seal, leading to the exact "whirring but not emptying" symptom.
• Bin Maintenance: Every 30 days, manually empty the robot's bin and wipe the sensors on the bottom of the robot. A dirty sensor can cause the robot to dock slightly off-center, preventing the evacuation port from aligning perfectly with the base.