Question 1

roomba 694 won't go back to its dock, it just bumps into it and then gives up and stops.

Accepted Answer

DIAGNOSIS The infrared signals from the Home Base aren't being seen by the robot, usually due to placement or dirty sensors. FIX Ensure the dock is in an open area with at least 3 feet of clear space on both sides and 4 feet in front. Move any objects, especially dark furniture or baskets, away from the front of the dock. Wipe the two circular IR receiver windows on the front bumper of the robot. IF THAT DIDN'T WORK Check that the two IR lenses on the top of the Home Base are clean and unobstructed. Also, direct sunlight or very bright light shining on the dock can drown out its IR signal. Try a slightly shaded location. HEADS UP The robot needs to 'trip' over the dock's forward signals to align. Start a 'dock' command from the same room as the dock, not from across the house.

Question 2

the dirt detect light on my 694 keeps flashing red during a clean even on clean floors, what does that mean?

Accepted Answer

DIAGNOSIS The acoustic dirt detect sensor on the underside is either dirty or malfunctioning, causing false positives. FIX Turn the robot over and wipe the small, round, microphone-like sensor (usually near the front caster wheel) with a dry cloth. Built-up dust makes it think it's constantly over debris. IF THAT DIDN'T WORK The behavior is normal on rugs or uneven surfaces where the robot is working harder. If it's happening on bare floors and the sensor is clean, you can ignore it—it doesn't affect cleaning performance, just indicates the robot thinks it's on a dirty spot. HEADS UP A solid red light, not flashing, indicates an error. Flashing red during cleaning is just the dirt detect indicator doing its (sometimes overly sensitive) job.

Question 3

my roomba 694 is making a horrible grinding noise when it runs, sounds like it's chewing rocks.

Accepted Answer

DIAGNOSIS A foreign object (pebble, jewelry, twist-tie) is lodged in the main roller cage or the debris extractors are jammed. FIX Turn the robot over, remove the bin, and pull out both roller brushes. Inspect the ends of the rollers and the chambers they sit in for stuck debris. Clear anything you find. Manually spin the rollers—they should move freely. IF THAT DIDN'T WORK Check the main brush chamber itself. Small objects can get past the rollers and jam the impeller fan inside the suction path. You may need to shake the robot upside down or use long tweezers. HEADS UP This noise can also mean a bearing in the roller end cap is failing. If rollers are clear and spin freely but the noise persists, replace the rollers—the end caps are part of the roller assembly.

Question 4

the side brush on my 694 isn't spinning at all during a clean, is it broken?

Accepted Answer

DIAGNOSIS Hair and threads are wound tightly around the side brush axle, jamming it. FIX Pull the side brush straight off. Use tweezers or small scissors to cut and remove all debris wrapped around the metal post underneath. Reinstall the brush, making sure it clicks into place. IF THAT DIDN'T WORK The side brush motor module might have failed, but it's rare. Before assuming that, try a brand new, genuine iRobot side brush. Knock-off brushes sometimes don't seat properly and won't engage. HEADS UP Check and clean this every 2-3 cleans if you have pets or long hair. Letting it get fully wound can burn out the motor.

Question 5

how do i reconnect my roomba 694 to wifi? the app says it's offline and the wifi button on the robot is solid red.

Accepted Answer

DIAGNOSIS The robot lost its Wi-Fi connection, usually after a router change or password update. FIX Press and hold the Wi-Fi button on the robot (next to the CLEAN button) for 10 seconds until it beeps and the light pulses blue. Delete the robot from the iRobot app. Then re-add it as a new product, following the in-app setup exactly. IF THAT DIDN'T WORK Ensure your phone is on the 2.4 GHz band of your Wi-Fi. The 694 does not connect to 5 GHz networks. Temporarily disable 5 GHz on your router or move the robot/dock closer to the router during setup. HEADS UP The robot and your phone must be on the same Wi-Fi network for setup. Don't use a guest network or a network with AP isolation enabled.

Question 6

roomba 694 battery dies super fast, like 20 minutes into a clean, and goes back to dock but the dock light is green.

Accepted Answer

DIAGNOSIS The battery is failing or wasn't fully charged because of a poor dock connection. A healthy 694 should run ~60-90 minutes. FIX Clean the metal charging contacts on both the robot and the Home Base with a dry pencil eraser or rubbing alcohol on a cotton swab. Corrosion or dust here prevents a full charge. IF THAT DIDN'T WORK The battery itself is likely degraded. The fix is a replacement battery (model BACS02). Let the robot charge uninterrupted for 16 hours first to recalibrate the battery gauge—if it still dies fast, the battery is the culprit. HEADS UP Leaving the robot on the dock 24/7 slowly degrades the battery. If you don't use it daily, store it half-charged off the dock.

Question 7

why is my roomba 694 just wandering around in circles and not really cleaning the whole room?

Accepted Answer

DIAGNOSIS Its navigation is confused because it's working in low light or an overly cluttered/open space. The 694 uses a bump-and-go method, not mapping. FIX Turn on more lights in the room before starting a clean. This robot needs decent ambient light for its basic optical sensors to orient itself. A dark room makes it act drunk. IF THAT DIDN'T WORK Check for and clean the front bumper sensor window (the small, dark plastic strip above the bumper). A smudge there can mess with its perception. Wipe it with a dry microfiber cloth. HEADS UP This model is designed for multiple passes over an area. It will eventually cover the room, but it's not efficient. For better coverage, run it more frequently so it starts from different spots.

Question 8

my roomba 694 just beeps once and won't start cleaning, the clean button is lit up but it just sits there.

Accepted Answer

DIAGNOSIS The robot is stuck in a 'start' loop because it can't confirm its bin is properly seated or the filter is clogged. FIX Remove the bin, empty it, and re-seat it with a firm click. Check that the yellow bin release tab is fully engaged. Then hold the CLEAN button for 10 seconds to reboot it. That usually clears the beep-and-freeze. IF THAT DIDN'T WORK Take the filter out and tap it against a trash can. A heavily clogged filter restricts airflow enough for the robot to refuse a cleaning cycle. If it's really dirty, give it a light vacuum. HEADS UP Don't run the robot without a filter or bin installed—the sensors will detect it's missing and keep throwing the same error.

iRobot Roomba 694 Robot Vacuum

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