Litter robot blinking yellow and red

When I turn on the Litter Robot 3 (non-connect), blue light is flashing, then I press Reset and fast yellow light is flashing. When I press Reset again, blue light is flashing and so on.. What I checked so far: - Anti Pinch Pins looks good and are touching each other. - DFI is clean and 4 IR LEDs are blinking once a second.

Disconnect the litter box and turn it on after ten seconds. Put something heavy (around 2kg) on the cat litter box to stimulate the machine. Now, wait for thirty seconds, and the display panel will show the log. Then, just wait for five to six minutes, and the self-cleaning cycle will be initiated.Flashing yellow to red means the motor has detected an obstruction or jam. Turn the unit off and remove the bonnet and globe. Check for gear or motor obstruction. Reassemble the unit and verify a proper litter level. Then turn the unit on—if the problem persists, try the Litter-Robot 3 Troubleshooter or contact Whisker Support.Feb 27, 2024 · 1. Yellow to Red. Whenever your unit flashes from yellow to red light, it indicates a motor obstruction. You have to turn off the device, disassemble it, and remove the jam. 2. Blue to Yellow to Red. This sequence means that your Litter-Robot can’t find the dump position. You should contact customer service for assistance in resolving the ... Litter-Robot 3: Yellow flashing slowly (Cat sensor) The Litter-Robot 3 is equipped with a cat sensor that detects when a cat enters and exits the globe. If a cycle is interrupted or the bonnet is removed, the unit will stop, and the yellow light will flash slowly, about 1x per second.Tamia December 5, 2019, 9:41pm 1. Hello, I have a problem with Litter Robot 3. It has blue flashing light at the beginning. I have tried everything (cleaning, reset, check dfi sensor and empty drawer) and when I plug back in it stuck at solid yellow light now (yellow light only). None of buttons is worked even the power button.

Watch on. The Litter-Robot 3 is equipped with a cat sensor that detects when a cat enters and exits the globe. If the cat sensor has been continuously activated for 30 minutes or more, either by a cat that won’t leave the globe or by too much weight in the unit, the timing light will flash red. You will also receive a notification on your ... Status Indicator Lights. Solid Blue: Feeder is in Automatic Feeding Mode. Solid Yellow: Hopper is low indicating less than 20% food remaining. Solid Red: Hopper is critically low indicating less than 5% food remaining. Flashing Red: Dispenser is jammed. Solid Purple: Food Bowl and Food Chute are full for 12+ hours (food has not been consumed)Submit support request. Select a category for your ticket. Select a sub-category for your ticket. Please describe your issue. Got questions or issues? Contact Litter-Robot Support today. We're dedicated to ensuring a seamless experience for you & your pet.There appears to be a sensor issue with your Litter-Robot in this case. We suggest that you please verify the sensitivity of the cat sensor. Please also remove the globe and pull and push on the safety line a few times to dislodge any debris. You should hear the switch inside the Litter-Robot click when you push on the safety line.The shield is a possible cause for the three lights flashing fault. We strongly recommend removing the internal shield. If your Litter-Robot was built before February of 2018, you may have an internal shield. The internal shield is not necessary for the unit to function and was removed from the design in March 2018.Litter-Robot 3. This is kind of an odd issue. I’ve been having issues constantly with my bot and it’s always blinking yellow. I think I need to take it apart and do another thorough cleaning of sensors cause I might of missed some or not cleaned it well enough. However, one thing I just noticed is for some reason when I turn off the lights ...These sensors detect when a cat has entered or exited the unit. If the unit detects an issue with all three laser sensors, called curtain sensors, it will indicate a fault with the entire system and the light bar on the Litter-Robot will display red and blue alternating lights. You will also receive a notification on your phone if you use the ...Submit support request. Select a category for your ticket. Select a sub-category for your ticket. Please describe your issue. Got questions or issues? Contact Litter-Robot Support today. We're dedicated to ensuring a seamless experience for you & your pet.

If your Litter-Robot is slowly flashing yellow or stuck upside down due to the cat sensor, complete the troubleshooting steps in our Litter-Robot 3: Yellow light flashing (Cat sensor) guide. If your Litter-Robot is flashing red or stuck upside down, complete the troubleshooting steps in our Litter-Robot 3: Red light flashing (Cat sensor fault ...1. Blue Light. 2. Yellow Light. 3. Red Light. 4. Yellow and Blue. What Do Flashing Sequences Mean? 1. Yellow to Red. 2. Blue to Yellow to Red. 3. Red to Yellow to Blue. 4. Blue, Yellow, and Red. What to Do When Your Litter-Robot 3 Lights Are Blinking? 1. Reset the Unit. 2. Contact Support. 3. Change Litter. 4. Check the Power Supply. 5.Robot in WiFi onboarding mode Solid Blue WiFi Flashing Yellow Robot cycling *Yellow light moving with the rotation of the globe Round Robin Yellow* No action required or press Reset to cancel timing Cat detected and wait time countdown initiated Solid Red LR4-8010-0a Scan to access our online setup guide (including tips to acclimateIf your unit has a blue light bar with partial yellow flashing or the unit will not cycle, this indicates that the scale has been triggered for more than 30 minutes. You will also receive a notification on your phone if you use the Whisker App. Place the unit on a firm, level surface. Avoid soft, uneven, or unstable flooring for accurate weight ...

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If your unit has a flashing red light bar or the unit will not cycle, this indicates that the cat sensor has been triggered for more than 30 minutes. You will also receive a notification on your phone if you use the Whisker app. Successful: If your unit returned home and displays a blue light bar, you've been successful.Litter-Robot 3 Connect. Tagged as LR3 Connect but this is not the Wi-Fi enabled model. I have the Litter Robot 3 and I keep getting sequentially flashing red and blue lights. This combination isn't in the manual so I'm not sure what to do. The robot is away from walls and perfectly level. There is nothing under the robot.Litter-Robot 4 features an easy-to-use control panel near the top of the unit. Power button. Press the Power button to turn the unit power ON or OFF.When turning the unit ON, the light bar will flash white, then the unit will perform a Clean cycle with a sequential round robin yellow light bar indicating the direction of rotation.Litter-Robot 3 flashing red light A solid ruby light on your Litter-Robot 3 control panel means that the cat sensor was activated by to cats entered an globe while the unit was ready for getting. This unit is counting down to a clean cycle, depending on your set wait time (3, 7, instead 15 minutes).Litter-Robot 3 flashing red light. A solid crimson light on your Litter-Robot 3 govern panel means that the cat sensor was activated of your cat entering the spheres while one unit was ready to getting. The unit is counting blue to a cleanup cycle, depending on your set wait hours (3, 7, or 15 minutes). ... Flashing blue to yellow to ...

Press and hold Cycle button for 5 seconds. Yellow light turns off, blue light remains lit. Activate the cat sensor by pressing on the globe just above the entrance in a forward and down motion. The red light should come on now. Allow the unit to complete the timing, cycle, and return to home position. At this time, the unit will have reset itself.Litter-Robot utilizes position sensors to determine the position of the globe during rotation. Additionally, the speed of the globe is calculated to ensure continued operation as a backup to the position sensors. If your unit displays a red light bar with partial white flashing, this indicates that the unit did not detect the globe position ...Blue, then yellow, then red (Flashing sequentially, one light at a time): This means the unit cannot find the dump position. It will continue to function in automatic mode but needs repair. ... Litter-Robot uses two magnets located in the globe gear track to monitor the position of the globe. The magnets could be missing or put in backward ...The litter robot resets after a cycle, but after a while the red light comes on and thereafter another cycle starts and resets. ... The unit is pushed into a corner, against a wall, or furniture Objects are resting or pressing on the unit The red blinking light indicates CATS (the cat sensor) is detecting excess weight for more than 2 minutes ...Advice - Rapid Blue to Rapid Yellow Light. Every couple of months my LR3 was flashing the yellow light. Last two times, it would flash blue first indicating a full drawer when it wasn't full. When I'd hit reset, it would go to flashing yellow. I spent a long time taking it apart and cleaning the sensors over and over just hoping it would work.Community for all things Litter-Robot. Post your experiences, tips, tricks, and hacks. Members Online • tjg0525 ... Every time I take the base apart and put it back together, the robot will work for a bit and then return to the yellow flashing. This most recent time it works when I have base dissembled and continues to work when I assemble ...Litter-Robot 4 features a bonnet that covers the globe and functions as a guard for the waste port as the globe rotates. Sensors on the unit detect if the bonnet is on or off. This ensures that Litter-Robot will not rotate if the bonnet has been removed. If your unit displays a yellow light bar flashing, this indicates that the bonnet has been ...Hi, I just purchased the litter robot and set it up. It seemed to be working just fine on the first cycle and I decided to run it one more time just to test if everything was okay. It ended up getting stuck and blinking from yellow to red-light. I read the manual and followed the instructions from Yellow-> Red LEDs flashing sequentially: I tried it a few more times but it didn't seem to ...

Short press the Reset button, then short press the Cycle button to run a Clean cycle. After your Litter-Robot cycles, it should return to the Home position, displaying a blue light bar. Successful: If your unit displays a blue light bar, you've been successful. Unsuccessful: If you are still seeing a blue and red alternating light bar, please ...

Litter-Robot 4: Light codes guide. Litter-Robot 4 control panel features 5 buttons and an LED display for easy operation. Blue flashing. If your unit's light bar is flashing blue, this indicates that the waste drawer is full. Empty the waste drawer, press the Reset button, then press the Cycle button. Learn more.Litter Robot Walmart. Customer Support. The best thing about Litter-Robot is its customer support. If you’ve tried this troubleshooting method (and even tried it a few times) but it still doesn’t work, don’t hesitate to give Litter-Robot a call. Here are their details: Litter-Robot Customer Support Phone: 1-877-250-7729. 9am – 7pm ETSep 14, 2023 ... If the light bar is solid blue with a flashing yellow light adjacent to the Connect button, this indicates that the unit is in Onboarding ...The Litter Robot Open Air III has a blinking blue light when the bottom drawer is full. This review shows what that looks like and how to fix it.Since I boug...Opening up the Litter-Robot II To open the Litter-Robot II base, you will need a Torx T20 screwdrive and a 5/16" socket with a ratchet. First, remove the 7 torx screws around the base. ... White wire from the motor to brown wire from the Litter-Robot harness - Red wire from the motor to green wire from the Litter-Robot harness.Jan 29, 2023 · Step 1: Check the Waste Drawer. The first step in troubleshooting a rapidly flashing yellow light on the Litter Robot is to check the waste drawer. If the drawer is full, the light will flash rapidly to indicate that it needs to be emptied. To check the waste drawer, simply open the door at the bottom of the unit and remove the drawer. Litter-Robot 4 continuously monitors the motor current to ensure the Globe is rotating smoothly and is not obstructed. If your unit has a red light bar with ...1.4 Importance Of Troubleshooting The Blinking Blue Light. 2 Step 1: Checking The Connection. 3 Step 2: Examining The Waste Drawer. 3.1 Clearing Any Obstructions: 3.2 Checking The Carbon Filter: 3.3 Cleaning The Waste Drawer: 4 Step 3: Reviewing The Sensor. 5 Step 4: Evaluating The Globe.Community for all things Litter-Robot. Post your experiences, tips, tricks, and hacks. ... LR3 Flashing Yellow Light I feel like I've tried everything Litter-Robot 3 I've had my litter robot 3 for about three years now and I've had no problems with it until about a week ago I took it apart for its normal cleaning, and after putting it ...The litter robot resets after a cycle, but after a while the red light comes on and thereafter another cycle starts and resets. ... The unit is pushed into a corner, against a wall, or furniture Objects are resting or pressing on the unit The red blinking light indicates CATS (the cat sensor) is detecting excess weight for more than 2 minutes ...

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Litter-Robot 3 Connect. Tagged as LR3 Connect but this is not the Wi-Fi enabled model. I have the Litter Robot 3 and I keep getting sequentially flashing red and blue lights. This combination isn't in the manual so I'm not sure what to do. The robot is away from walls and perfectly level. There is nothing under the robot. Litter Robot 4 won't flash yellow wifi light to connect to app. Litter-Robot 4. The LR will just display a solid long yellow light when I press the wifi button for 3 seconds instead of flashing like it's supposed to. I turned it on and off/ replugged multiple times and reattached the bonnet per suggestions on another post.If your unit displays a yellow ping-pong light bar, this indicates that the anti-pinch sensors have been activated. You will also receive a notification on your phone if you use the Whisker app. While cycling, the globe will stop and retract for five seconds. After a two-second pause, the unit will attempt to continue the cycle.Tamia December 5, 2019, 9:41pm 1. Hello, I have a problem with Litter Robot 3. It has blue flashing light at the beginning. I have tried everything (cleaning, reset, check dfi sensor and empty drawer) and when I plug back in it stuck at solid yellow light now (yellow light only). None of buttons is worked even the power button.Help Troubleshooting Blue Flashing Light and Yellow Flashing Light (Rapidly) My Litter Robot III Open Air has a blue flashing light. When pressing Reset, the yellow light starts flashing rapidly, while the blue one is no longer lit. I tried cleaning the sensor, calibrating it, cleaning the anti-pinch safety measure. Nothing has worked so far.Litter-Robot 4 control panel features 5 buttons and an LED display for easy operation. If your unit’s light bar is flashing blue, this indicates that the waste drawer is full. Empty the waste drawer, press the Reset button, then press the Cycle button. Learn more. If your unit's light bar is blue with two flashing yellow lights, this ...However, the globe got nearly all the way through a cycle, doing its' last counterclockwise rotation, when it stopped at 5 o'clock and the yellow and red lights started blinking simultaneously. I didn't see anything in the manual for red/yellow at the same time, but I did do the check-list for yellow/red sequential with the motor overtorquing.To prevent your Litter Robot from getting stuck upside down, it is essential to maintain it properly. Regularly clean the device and remove any litter or debris that may be blocking the sensor or the motor. Also, make sure that the litter box is properly placed on a level surface. Frequently Asked Questions.Do you have a pair of shoes that aren't worn out, but are just too smelly to wear? You could buy any number of de-smelling solutions from your local big box store, but we head stra...So you know the common problem: It powers up to the flashing blue light. As soon as you press the cycle button is rapidly flashes yellow. According to your suggestions, I opened it and bypassed the sensors. Specifically, I directly connected the two cables connecting the two metal rods that acted a pinch sensor.Litter-Robot 3: Reset button. The Reset button will reset your Litter-Robot's cat sensor. You can think of the cat sensor as the scale and the Reset button as a way to zero the scale. IMPORTANT: Any time you do anything that affects the weight or placement of the unit, including adding or removing litter, emptying the waste drawer, or moving or ... ….

Once the update is complete, your Litter-Robot should be ready for use. Successful: If your unit returned home and displays a blue light bar, you've been successful. Unsuccessful: If you are still seeing a green light bar with partial red flashing after resetting at the Home position, there's likely an issue with your Litter-Robot.If your robot has problems with the red blinking light, please check your unit for the following: The litter is above the fill line or in excess of 10lbs. CATS has not been reset after adding weight The waste drawer has too much weight The unit is sitting on an uneven surface ‐ grout lines on tile floor or in a bathtub. The unit is pushed into a corner, …If your unit has a blue light bar with partial yellow flashing or the unit will not cycle, this indicates that the scale has been triggered for more than 30 minutes. You will also receive a notification on your phone if you use the Whisker App. Place the unit on a firm, level surface. Avoid soft, uneven, or unstable flooring for accurate weight ...Disconnect the litter box and turn it on after ten seconds. Put something heavy (around 2kg) on the cat litter box to stimulate the machine. Now, wait for thirty seconds, and the display panel will show the log. Then, just wait for five to six minutes, and the self-cleaning cycle will be initiated.litter-robot-3, troubleshooting, knowledge-base. MNPistagnesi December 3, 2021, 12:00am 1. The Litter Robot 3 is an incredibly popular automatic cat litter box which automatically detects when a cat has entered and exited, and rotates the main globe to sift and dump the used litter. It is subjected to conditions which most robots - if they had ...When I turn on the Litter Robot 3 (non-connect), blue light is flashing, then I press Reset and fast yellow light is flashing. When I press Reset again, blue light is flashing and so on.. What I checked so far: - Anti Pinch Pins looks good and are touching each other. - DFI is clean and 4 IR LEDs are blinking once a second.Flashing yellow lights on solid white line I have had the litter robot 4 for only 2 days and it has stopped working. I can hear it attempt to turn when I switch it off and on but it does not, and then what I do see is two flashing yellow lights on a white line.If your Litter-Robot 3 is displaying a yellow light flashing slowly, this indicates a cycle has been interrupted either by the cat sensor or bonnet removal. Press the Reset button to resume the cycle. Successful: If your unit returned home and displays a solid blue light, you've been successful. Litter robot blinking yellow and red, On the Robot Information page, select Update Firmware to begin the update process.This will take between 5 and 27 minutes to complete. You will see a single white light blinking on your unit's control panel - this is the signal that your robot's firmware is updating. Our new LR4 (just received 3 weeks ago) was working perfectly until this ..., Submit support request. Select a category for your ticket. Select a sub-category for your ticket. Please describe your issue. Got questions or issues? Contact Litter-Robot Support today. We’re dedicated to ensuring a seamless experience for you & your pet., The yellow light has remained on (not flashing) and it does not respond to any activity anymore. We have taken apart all the pieces and made sure they are clean. We unplugged it for a few hours but as soon as it’s turned on again, the yellow light reappears. It does not respond to the reset, empty or power button either., The shield is a possible cause for the three lights flashing fault. We strongly recommend removing the internal shield. If your Litter-Robot was built before February of 2018, you may have an internal shield. The internal shield is not necessary for the unit to function and was removed from the design in March 2018., In a desperate attempt to communicate with the LR4, I tried holding the power and connect button together. It made the light turn into 1 pink square, then 2 pink squares, and now it's flashing pink and yellow while still being unresponsive. I can find no reference to this light code, other than a reddit comment from a litter robot ..., Community for all things Litter-Robot. Post your experiences, tips, tricks, and hacks. Members Online • SentenceUnfair6684. ADMIN MOD red and yellow flashing light - motor issue? Litter-Robot 4 i've had my litter robot for over a year now and i love it! recently it's been giving me the signal that the globe is jammed but when i ..., Litter Robot Walmart. Customer Support. The best thing about Litter-Robot is its customer support. If you’ve tried this troubleshooting method (and even tried it a few times) but it still doesn’t work, don’t hesitate to give Litter-Robot a call. Here are their details: Litter-Robot Customer Support Phone: 1-877-250-7729. 9am – 7pm ET, Advice - Rapid Blue to Rapid Yellow Light. Every couple of months my LR3 was flashing the yellow light. Last two times, it would flash blue first indicating a full drawer when it wasn't full. When I'd hit reset, it would go to flashing yellow. I spent a long time taking it apart and cleaning the sensors over and over just hoping it would work., My Litter Robot won't reset. The blue light is constantly flashing. When reset is pressed the yellow light then flashes. It pinch sensor has been cleaned and they are touching. The DFI sensors have been cleaned. Help!!! Thank you so much in advance for your help!, If your unit displays a white light bar with partial yellow flashing, it's indicating that you need to check your power supply. You will also receive a ..., Litter-Robot 4: Red Light Bar with Partial White Flashing (Globe Position) Litter-Robot 4: Red Ping-Pong Light Bar (Motion in Drawer) Litter-Robot 4: Red with Partial Yellow Flashing (Over-torque Fault) Litter-Robot 4: Sensors and Functions, Support request submitted. We strive to respond to all email inquiries within 1 to 2 business days, however higher incoming volumes can affect our response times., Litter-Robot 4 control panel features 5 buttons and an LED display for easy operation. If your unit’s light bar is flashing blue, this indicates that the waste drawer is full. Empty the waste drawer, press the Reset button, then press the Cycle button. Learn more. If your unit's light bar is blue with two flashing yellow lights, this ... , Community for all things Litter-Robot. Post your experiences, tips, tricks, and hacks. Members Online • tjg0525 ... Every time I take the base apart and put it back together, the robot will work for a bit and then return to the yellow flashing. This most recent time it works when I have base dissembled and continues to work when I assemble ..., Hi! I require your help regarding a problem I'm encountering. Description: LR 3 Connect wont start Cycle always telling me its got a Over Torque Fault. I already opened it (Bonnet and Globe), cleaned it and removed mos…, The Litter-Robot is equipped with an Anti-Pinch Safety Feature to make the Litter-Robot extra safe for your cat. While cycling, if a potential pinch conditi..., Litter-Robot 3: All three lights flashing (Globe position fault) Litter-Robot 3: Blue Light Flashing (Drawer Full) Litter-Robot 3: Buttons and Lights. Litter-Robot 3: Cat not detected. Litter-Robot 3: Cat Sensor Troubleshooting. Litter-Robot 3: Control Panel Lockout. Litter-Robot 3: Cycle delay setting., Solid blue and flashing yellow light Litter-Robot 4 Came home to a stinky litter robot and this solid blue and flashing yellow light. It's done this a couple times since the firmware update. According to the light codes guide it means the robot or scale feet are unbalanced, but my robot is on hard vinyl floor, not touching a wall, and there ..., 10 votes, 37 comments. 26K subscribers in the litterrobot community. Community for all things Litter-Robot. Post your experiences, tips, tricks, and…, Disconnect the litter box and turn it on after ten seconds. Put something heavy (around 2kg) on the cat litter box to stimulate the machine. Now, wait for thirty seconds, and the display panel will show the log. Then, just wait for five to six minutes, and the self-cleaning cycle will be initiated., If your Litter-Robot is not detecting your cat or not cycling, complete the troubleshooting steps in our Litter-Robot 3: Cat not detected guide.. If your Litter-Robot is slowly flashing yellow or stuck upside down due to the cat sensor, complete the troubleshooting steps in our Litter-Robot 3: Yellow light flashing (Cat sensor) guide.. If your Litter-Robot is flashing red or stuck upside down ..., Watch on. If Litter-Robot 3 globe becomes jammed or overloaded when rotating clockwise, the motor will stop and reverse for 5 seconds. The unit will start to cycle again after 15 seconds, to attempt to return to the Home position. If after three attempts, the unit is unable to cycle, the globe will return to the Home Position and the control ... , Here is the solution they provided, and now my litter robot is finally back to solid blue: "Here are the steps. Remove the bonnet → set aside the globe → place the bonnet back on. Press cycle. When the cycle ends, all three lights will flash on the control panel. Next, unplug the robot from the back of the base (not the wall) while it is ... , Litter robot 3 was working great until last week. (This model is before the app) it started to stop mid-cycle upside down, about 11:00 position, and will blink yellow (about 1 blink per second). So far we have: replaced pinch sensors, sanded down bonnet sensors, soaked entire globe to ensure no trapped litter in clean litter pocket, flexed out ..., Submit support request. Select a category for your ticket. Select a sub-category for your ticket. Please describe your issue. Got questions or issues? Contact Litter-Robot Support today. We’re dedicated to ensuring a seamless experience for you & your pet. , The Litter Robot 3 is an incredibly popular automatic cat litter box which automatically detects when a cat has entered and exited, and rotates the main globe to sift and dump the used litter. ... Litter Robot 3 Yellow light slow blinking, stop during cycle - Domestic Robots - RobotShop Community ... Litter-robot issues; Yellow light flashing ..., I've had a Litter Robot 3 for about 3.5 years and these days it can't seem to get through a single cycle without blinking yellow and having to restart it and or jostle it around, just to move a little bit, then blink yellow again, multiple times., r/litterrobot. • 3 mo. ago. Papawoofs. Litter Robot 4 lights blue with TWO blinking yellow. Litter-Robot 4. Ok, I've looked through the docs and online, could not find it. After the …, Litter-Robot 4 features an easy-to-use control panel near the top of the unit. Power button. Press the Power button to turn the unit power ON or OFF.When turning the unit ON, the light bar will flash white, then the unit will perform a Clean cycle with a sequential round robin yellow light bar indicating the direction of rotation., Litter Robot 4 lights blue with TWO blinking yellow upvotes · comments. r/litterrobot. r/litterrobot. Community for all things Litter-Robot. Post your experiences, tips, tricks, and hacks. Members Online. Robot 4 flashing solid green and red upvotes · comments. r/litterrobot ..., With both options, you will get an additional warranty, just in case! -Base Replacement: This is a $399 replacement and gets you a new Litter-Robot base with a 1-year warranty. If your unit was purchased after Jan 1, 2020, you are eligible for a 50% discount on a replacement base at $199.50., I performed the before mentioned procedures, which means that now the bonnet detector and the pinch detector are permanently short-circuited. However, it still has the slow blinking yellow light problem. So I verified with a smartphone camera that the 4 infra-red emitters on the DFI board are working., Litter-Robot 3: Blue light flashing (Drawer full) Litter-Robot 3 is equipped with infrared emitters and sensors, called DFI sensors, located above the waste drawer that check if the drawer is full each time the globe returns to the Home position. Once a full waste drawer is detected, the unit will indicate it is full with a blue flashing light.