Litter robot 4 sensors

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 ... When pressed with the red light bar on, it will cancel the cat sensor cycle delay and the unit will return to Ready mode (blue light bar on). A 3-second long press enables or disables automatic night ...

Litter robot 4 sensors. 1x Litter-Robot 4 Carpet Tray. Dimensions. Size. 16.5 x 19 x 1.5 inch. Specifications. Color: Black. Not required for Litter-Robot 4 to function. Compatible with Litter-Robot 4 only. Recommended for use on carpets 3mm (1/8 inch) thick and up.

Whisker has gone smaller, quieter and smarter with its new self-cleaning litter box. The Litter-Robot 4 ($649) is the successor to the Litter-Robot 3 Connect ($549) and is the most significant ...

Litter-Robot 3 Pinch Contact & DFI Kit. $30. Buy in monthly payments with Affirm on orders over $50. Learn more. If your Litter-Robot 3 is no longer under warranty, you can purchase this replacement pinch contact and DFI kit. Qty.Vielen Dank, dass Sie sich für ein Whisker-Produkt entschieden haben. Mit dieser Anleitung können Sie Ihren Liter-Robot optimal nutzen. Wir führen Sie durch den Einrichtungsvorgang und geben Ihnen hilfreiche Tipps und Ratschläge dazu, wie Sie Ihre Katze an ihre neue, automatische, selbstreinigende Katzentoilete gewöhnen.Hitting the reset the cycle resumes for ~3 seconds and stops with another red bar. It takes 8-10 resets to get it all the way through the first 1/2 of the cycle (to the dump portion). The 2nd 1/2 of the cycle only takes 3-5 resets. Once it get to the start position the bar goes blue. Following the trouble shooter I wiped the sensor area with a ...Litter-Robot 4 is equipped with OmniSense™ detection that utilizes laser and weight sensor technology to provide real-time litter and waste drawer levels. There are three laser sensors located in the top of the bezel, called curtain sensors, that accurately measure the capacity of the waste drawer.In today’s fast-paced world, businesses are constantly seeking ways to streamline their operations and improve efficiency. One technology that has gained significant attention is r...Litter-Robot 3 Connect. $549. Buy in monthly payments with Affirm on orders over $50. Learn more. Never scoop again and experience a new level of cleanliness with Litter-Robot 3 Connect, the top-rated self-cleaning litter box for cats. Since 2000, over 1 million happy pet parents have upgraded to Litter-Robot.

People need robots for dangerous, repetitive and high-precision work. Robots perform tasks in hostile environments that are impossible for humans, while also carrying out repetitio...Pretty litter worked pretty well with all the cats, i think it ended up being about 3 weeks before it was saturated and 4 weeks when I absolutely needed to clean it out and replace each litter box (3 total) with a new bag. I have 2 litter robots and one regular box now. With the clumping litter robot litter, I get 3 bags a month.Litter-Robot 4 is the latest evolution of the highest-rated WiFi-enabled, automatic, self-cleaning litter box for cats. With over 20 years of customer feedback driving product innovation, Litter-Robot 4 features new sensor and litter-sifting technology for enhanced odor control, cat safety, and real-time tracking of waste and litter levels through the Whisker app.Litter Robot 4 Sensor Fault upvotes ... Post your experiences, tips, tricks, and hacks. Members Online. Robot litter 4 , rotation fault upvotes ...Litter-Robot 4 is equipped with OmniSense™ detection that utilizes laser and weight sensor technology to provide real-time litter and waste drawer levels. OmniSense™ also supports the SafeCat system, which continuously analyzes four safety zones to ensure your cat is always safe.Litter-Robot 4: Ongoing maintenance. Empty the waste drawer. Empty the waste drawer when indicated by the light bar flashing blue on the control panel. ... Press the Reset button to zero the weight sensors. Add litter as needed. Check the litter level once per week or each time you empty the waste drawer. Add litter up to the raised MAX fill ...1x Litter-Robot 4 Carpet Tray. Dimensions. Size. 16.5 x 19 x 1.5 inch. Specifications. Color: Black. Not required for Litter-Robot 4 to function. Compatible with Litter-Robot 4 only. Recommended for use on carpets 3mm (1/8 inch) thick and up.Seems to be a server issue on Whisker's end. As far as stuck on timing, make sure no cat hair is dangling in front of any of the 3 sensors at the top of the entrance. Dust can get in them too. 24K subscribers in the litterrobot community. Community for all things Litter-Robot. Post your experiences, tips, tricks, and hacks.

Litter-Robot 4 is equipped with OmniSense™ detection that utilizes laser and weight sensor technology to provide real-time litter and waste drawer levels. OmniSense™ also supports the SafeCat system, which continuously analyzes four safety zones to ensure your cat is always safe.Litter-Robot 4 is equipped with OmniSense™ detection that utilizes laser and weight sensor technology to provide real-time litter and waste drawer levels. ... Press the Reset button to zero the weight sensors. Carbon filter. Litter-Robot 4 is equipped with a carbon filter that is installed on the outside of the globe. When the globe is in the ...Nov 2, 2022 ... Use my link for $25 off a Litter Robot 4: https://www.pntra.com/t/SENLRk5LT0ZDSEdGR0ZJQ0hKS05HTQ This is the litter robot 4, a re-engineered ...In This Article. Why Trust Cats.com. Litter-Robot 4 and Whisker Overview. Litter-Robot 4 Features. What Did Our Test Cats Think? Customer Reviews of the Litter-Robot 4. Litter-Robot 4 Cost. Litter-Robot 4 is equipped with OmniSense™ detection that utilizes laser and weight sensor technology to provide real-time litter and waste drawer levels. OmniSense™ also supports the SafeCat system which continuously analyzes four safety zones to ensure your cat is always safe.

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Litter-Robot 4 is equipped with OmniSense™ detection that utilizes laser and weight sensor technology to provide real-time litter and waste drawer levels. OmniSense™ also supports the SafeCat system, which continuously analyzes four safety zones to ensure your cat is always safe. ... These sensors detect when a cat has entered or exited the ...Here is my setup: Use a automatic feeder to feed litter in at 4 am every other day (will add extra hopper to fit a full 40lb bag of fresh litter). Use simple 3 inch PVC parts from home depot for the funnel, if the 90 elbow is rotated to the side - it will not interfere with sensors. Litter robot with a hole in drawer and bottom (line the LR4 ...The Litter-Robot 4 is equipped with OmniSense™ detection that utilizes laser and weight sensor technology to provide real-time litter and waste drawer levels. ... The Litter-Robot is equipped with anti-pinch sensors on both sides of the waste drawer chute to ensure your cat's safety while using the Litter-Robot. These sensors monitor for ...Want to keep your Litter-Robot 3 running perfectly, and avoid those nasty flashing error lights? Performing simple monthly maintenance is key. Litter dust c...Litter-Robot 4 is equipped with OmniSense™ detection that utilizes laser and weight sensor technology to provide real-time litter and waste drawer levels. There are three laser sensors located in the top of the bezel, called curtain sensors, that accurately measure the capacity of the waste drawer.

The Whisker Litter-Robot 4 OdorTrap Holder is a uniquely crafted holder that seamlessly integrates with the Litter-Robot 4. It is capable of accommodating up to three OdorTrap Packs, designed to capture and neutralize odors before they permeate the surrounding environment. This holder serves as an effective replacement for the carbon filter ...Make sure the globe didn't get jostled in shipping and is seated properly In the base. Keep your firmware updated. There was a light issue fixed with an update. My Persians and their long floaty fur seems to be an enemy of the sensors and causes cycle interruptions. That fix should be coming soon.LR4 Clean Sensor Fix Video:Hi all, I made this video to show how you clean the bottom sensors of your LR4 which helped me fix the problems I’ve experienced s...Installing the Litter-Robot 4 Mini Fence. Hold the fence upright inside the globe. Tilt the bottom of the fence toward you to align the back of the fence with the bezel. Gently push down on the front of the fence to snap it onto the bezel. Make sure the fence is level. Press the Reset button to zero the weight sensors. Clean the bezel. If your cat's weight is reading 0.0, clean the bezel. Debris (dust, cat fur, etc) can interfere with the laser sensors and inaccurately measure your cat's weight. Wipe the bezel area where the sensors are located with a dry clean cloth to remove any hair or dust. Vacuum the inside perimeter of the bezel with a brush attachment ... The Litter-Robot 3 Connect Base adds WiFi connectivity to your existing Litter-Robot 3, so you can use the app to remotely monitor and control your Litter-Robot. ... Caution: Never submerge or soak the base. The base contains the cat sensor and electronics. You can wipe the surface with a cloth dampened with a disinfectant, but do not use ...In this video, our Domestic Robots Specialists Phil and Josué teach you how you can easily replace the cat sensor in your robotic litter Litter-Robot 3 Open ...The Litter-Robot 4 edges out its predecessor with extras like odor control, advanced cat sensors, quieter operation, a larger waste drawer, and a more spacious entryway.

Litter-Robot 4 is the latest evolution of the highest-rated WiFi-enabled, automatic, self-cleaning litter box for cats. With over 20 years of customer feedback driving product innovation, Litter-Robot 4 features new sensor and litter-sifting technology for enhanced odour control, cat safety, and real-time tracking of waste and litter levels through the Whisker app.

A self-cleaning litter box like Litter-Robot eliminates the need for pet parents to have to scoop, saving time and frustration brought on by an unpleasant chore. Additional benefits include better managing odour control, keeping cats’ …Litter-Robot 3: Cat sensor troubleshooting. The Litter-Robot 3 is equipped with a cat sensor that detects when a cat enters and exits the globe. When a cat enters the globe, the cat sensor is activated; the blue light turns off and the red light turns on. Once the cat exits the globe, the countdown to a Clean cycle begins.Dual sensor technology in the litter robot 4: a fight between sensors. Sensor technology is among the most significant differences between LR3 and. the LR4. Litter Robot 4 is equipped with two different kinds of sensors to guarantee an accurate cycle activation. The Curtain Type Sensor, located at the Globe entry point, is comprised of 3 motion ...Litter-Robot 4 is equipped with OmniSense™ detection that utilizes laser and weight sensor technology to provide real-time litter and waste drawer levels. OmniSense™ also supports the SafeCat system, which continuously analyzes four safety zones to ensure your cat is always safe.Inspect the litter and waste drawer. Empty the waste drawer. It's best to empty the waste drawer if it's getting close to full. Check for excess litter inside the globe. Using more than 10 lbs of litter can trigger the cat sensor, causing false cat detects. Make sure the litter is at or below the raised fill line.A self-cleaning litter box like Litter-Robot eliminates the need for pet parents to have to scoop, saving time and frustration brought on by an unpleasant chore. Additional benefits include better managing odour control, keeping cats' paws cleaner, and helping reduce litter usage.location for the Litter-Robot - the cord is 6 feet long. Step 4: Position the Litter-Robot on a flat and sturdy surface within range of an electrical outlet. Note: The Litter-Robot may be used on carpeted surfaces, but the Cat Sensor sensitivity may be slightly reduced. Step 5: Add clumping litter. Pour 10 lbs. (weight) or approximately 1 1/2 ... Litter-Robot 4 is equipped with OmniSense™ detection that utilizes laser and weight sensor technology to provide real-time litter and waste drawer levels. OmniSense™ also supports the SafeCat system which continuously analyzes four safety zones to ensure your cat is always safe. Also, press reset button after you put drawer back. take a cloth, wipe the sensors at the top of the globe (check that something didn't get in the way during shipment). Reply. rmoy0220. • 9 mo. ago. If anyone is still struggling with this, I received details on calibrating the sensors on the litter robot 4.Phone and Chat support available Mon-Fri: 9AM-7PM EST and Sat: 9AM-5PM EST, or submit a ticket anytime. Chat with us 1-877-250-7729 Submit a ticket. Find helpful tips and instructions in our Litter-Robot 4 manual. Learn to maximize your product's efficiency. Click for support and step-by-step guides.

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Cat sensor troubleshooting. In this article we will troubleshoot the "Bonnet removed" message. If you received a "Cat sensor interrupt" notification in the Whisker app, refer to the Litter-Robot 3: Yellow flashing slowly (Cat sensor) guide. If you are unsure, troubleshoot both errors.Fabrizio779. • 4 yr. ago. you can disable the pinch sensor simply disconnecting the two red connectors from the pinch sensor and connecting them together. This will bypass the system. If the problem is the weight, try disassemble the feet, clean everything and reassemble (also you can adjust the sesitivity by screwing more or less the bolt).Find solutions for your Litter-Robot 3's three lights flashing position sensors issue. Fix issues with your Connect Upgrade Kit today! ... Once you've checked the condition, location, and orientation of the position sensor, reassemble the robot and initiate a clean cycle to determine if the problem was resolved. Reassemble the globe and bonnet.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.Also make sure you double reset the weight after adding litter. Keep a regular litter box out all the time snd this will never happen again. There's just no way to 100% depend on the Litter-Robot. A way to bypass would be to set the robot to sleep mode 24/7 and then just do manual cycles.Litter-Robot 4 is equipped with OmniSense™ detection that utilizes laser and weight sensor technology to provide real-time litter and waste drawer levels. There are three laser sensors located in the top of the bezel, called curtain sensors, that accurately measure the capacity of the waste drawer. ...Issues with Litter Robot 4 immediately. My partner and I have had the litter robot 3 without connect for about 3 years and haven’t had any major issues with it. We love it and only wanted to upgrade for the app connectivity, so we decided on the newest model. We set it up where we had the LR3 before, on tile floors, put litter in it and went ...The Litter-Robot 4's curtain-type sensor. The Litter-Robot 4 is equipped with three downward-facing motion sensors that scan the entry and Globe from the top of the entryway. These sensors illuminate the litter bed, detecting your cat's movements and initiating cleaning cycles as needed. Notably, if a cleaning cycle begins and your cat ...In this video, our Domestic Robots Specialists Phil and Josué teach you how you can easily replace the cat sensor in your robotic litter Litter-Robot 3 Open ...Step 3: Check the Power Cord. If the waste drawer is not full and the sensors are clean, the next step is to check the power cord. A frayed or damaged power cord can cause the Litter Robot to malfunction and the yellow light to flash rapidly. Make sure the power cord is securely plugged into the unit and the outlet, and check for any damage ... ….

Installing the Litter-Robot 4 Mini Fence. Hold the fence upright inside the globe. Tilt the bottom of the fence toward you to align the back of the fence with the bezel. Gently push down on the front of the fence to snap it onto the bezel. Make sure the fence is level. Press the Reset button to zero the weight sensors.If you’re in the market for a new robotic vacuum, look no further than iRobot Roomba. With its advanced technology and efficient cleaning capabilities, the Roomba has become a hous...Litter-Robot 4: Use and care. Cleaning your Litter-Robot. It's important to deep clean your Litter-Robot every 3-6 months. Over time, small clumps can accumulate within the internal pocket of the globe, which can contribute to weight-related errors. ... Never submerge, spray, or soak the base or control panel as they contain sensors and ...Phone and Chat support available Mon-Fri: 9AM-7PM EST and Sat: 9AM-5PM EST, or submit a ticket anytime. Chat with us 1-877-250-7729 Submit a ticket. Find answers, guides, & solutions for your Litter-Robot. Your first stop for answers and solutions to your Litter-Robot questions.Visit for solutions if your Litter-Robot 4 has a red light bar with a partial white flashing globe. Get instant support and fixes today. ... 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 ...Description. Litter-Robot 4 Cat Presence Sensor. Designed for Litter-Robot 4. Monitors the waste drawer effectively. Available for replacement purposes. Requires installation …Elegantly designed to maximize comfort for cats of all sizes, Litter-Robot 4 features advanced litter-sifting technology, reduced litter tracking, and real-time monitoring of waste and litter levels through the Whisker app. ... The SafeCat System with OmniSense™ Detection is a combination of sophisticated software, weight sensors, and laser ...With two cats, the constant cleaning of the litter was becoming a hassle. However, the litter robot 4 has completely changed the game for us. Not only has it saved us time and effort, but it has also reduced our litter usage by a whopping 90%. ... The sensors on the LR4 are great as long as you are keeping it on a flat surface. If its not, the ...May 10, 2022 ... WHAT DOES THE NEW LITTER ROBOT FEATURE - Whisker Litter Robot 4 ... Litter Robot 4 Cat Fault Sensor Error Tip - Cleaning the cat detection sensors. Litter robot 4 sensors, Robots are made of three main components: the controller, mechanical parts and sensors. The type of materials that make up the different components will vary depending on the type ..., 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 ..., Jun 12, 2023 ... Our first time cleaning our new Litter-Robot 4, a deep clean, and a maintenance clean using new products! It's surprisingly so easy to clean ..., Troubleshooting Common Litter-Robot 4 Errors & How To Fix. Key Takeaways. 1. The most common issues with Litter-Robot not cycling stem from power issues, the type of litter used, foreign objects, or software malfunctions. 2. Regular maintenance, including weekly waste drawer checks and bi-weekly thorough cleaning, …, holmes1r. • 6 mo. ago. Yes, the DFI need to be replaced. Bypassing it difficult at best so its easier to get the replacement. You can get a replacement DFI and pinch contacts from HERE . I highly suggest restoring the pinch contacts to their manufactured configuration. The pinch contacts can be made to be reliable once again by performing ..., Details. Say goodbye to scooping and give your cats clean litter every time they go with Litter-Robot 3, the highest-rated automatic litter box. Purchase includes a 90-day in-home trial, comprehensive coverage with our WhiskerCare™ 1-Year Warranty, and free shipping. Never scoop again®. Helps reduce litter box odours. Great for cats 2.3 kg ..., Power. Plug the small end of the power supply into the power input on the back of the base. Plug the AC/DC adapter into a wall outlet. Press the Power buton on the control panel. The Liter-Robot will now perform an initial clean cycle. Note: During initial clean cycle, the cat sensor weight scale is disabled to ensure proper calibration., Featured Product. Litter-Robot 4. See Price at Litter-Robot. What is a Litter-Robot & what to expect. The Litter-Robot is a self-cleaning litter box that can accommodate up to four cats in one household., Dec 11, 2023 · Litter-Robot 4 Size. Compared to Litter-Robot 3, the Litter-Robot 4 is a bit smaller measuring 22 x 27 x 29.5 inches. The Litter-Robot 4 offers two designs: one with a step and the other with a handle. The handle-equipped type is best for cats who like to enter the unit directly without utilizing the step. , The Litter-Robot 4 is equipped with OmniSense™ detection that utilizes laser and weight sensor technology to provide real-time litter and waste drawer levels. Omnisense™ also supports the SafeCat system which continuously analyzes 4 safety zones to ensure your cat is always safe., The Litter-Robot 4 is equipped with OmniSense™ detection that utilizes laser and weight sensor technology to provide real-time litter and waste drawer levels. Omnisense™ also supports the SafeCat system which continuously analyzes 4 safety zones to ensure your cat is always safe., Aug 4, 2022 ... Here I show how to disassemble the Litter Robot 4 to clean it, and how I wash the globe with a garden hose outside in the yard., Note: The Hall Effect Sensor is part of the Wiring Harness and is not sold separately. Step 1: Open the Control Panel. Unplug your Litter-Robot's power supply (so that it has no more power) Carefully remove the bonnet and the globe; Locate the 5 screws on the top of the base and unscrew them . Step 2: Locate the circuit board and sensors, A step-by-step guide to resetting your Litter Robot 4. Step 1: Unplug and reset the unit. Step 2: Clean the unit thoroughly. Step 3: Check and replace any damaged parts. Step 4: Reassemble and test the unit. Tips for Troubleshooting Common Issues. Conclusion., Litter-Robot is equipped with anti-pinch sensors on both sides of the waste drawer chute to ensure your cat’s safety while in use. These sensors monitor for potential pinch conditions at all times. If your unit displays a green and white alternating light bar, this indicates an anti-pinch fault during power up., 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., The next step is to activate the Cat Sensors by simulating your cat entering the Globe—press above the entrance. Lastly, press the Reset button and let the Litter-Robot complete its reboot. 3. Take a Closer Look at the Bonnet, Globe, and Base. Check the parts of your Litter-Robot and ensure none of them are loose., Smart Features. Litter-Robot 4 is much improved over Litter-Robot 3. First, it is compatible with the Whisker App, allowing you to receive real-time warnings about blocked cleaning cycles and full waste bins. Litter-Robot 4 also offers quieter cleaning cycles, making it less disruptive to cats., Enjoy a refreshing litter box experience with Litter-Robot 4, best-selling accessories, odor-control and cleanliness products, and a 3-year warranty. Enjoy a refreshing litter box experience with the Litter-Robot 4 Clean Bundle. ... Litter-Robot 4 uses laser and weight sensor technology to detect when your cat enters and exits the globe, which ..., Learn how to remove and install the Litter-Robot 4 Laser Board. Litter-Robot is equipped with curtain sensors looking downward across the unit opening and into the globe that detect when a cat enters or exits the globe while in the Home position. You will need: Phillips-head screwdriver; Make sure the unit is in the Home/Ready position., Most of the impact robots have on society is positive, as they help improve human health and improve the efficiency of industrial and manufacturing processes. They also create jobs..., Litter-Robot 3 Pinch Contact & DFI Kit. $30. Buy in monthly payments with Affirm on orders over $50. Learn more. If your Litter-Robot 3 is no longer under warranty, you can purchase this replacement pinch contact and DFI kit. Qty., May 10, 2022 ... WHAT DOES THE NEW LITTER ROBOT FEATURE - Whisker Litter Robot 4 ... Litter Robot 4 Cat Fault Sensor Error Tip - Cleaning the cat detection sensors., The Litter-Robot 4 is equipped with OmniSense™ detection that utilizes laser and weight sensor technology to provide real-time litter and waste drawer levels. OmniSense™ also supports the SafeCat system which continuously analyzes four safety zones to ensure your cat is always safe. There are three laser sensors located in the top of the ..., Issues with Litter Robot 4 immediately. My partner and I have had the litter robot 3 without connect for about 3 years and haven't had any major issues with it. We love it and only wanted to upgrade for the app connectivity, so we decided on the newest model. We set it up where we had the LR3 before, on tile floors, put litter in it and went ..., Recalibration Fixed Overfilling. Litter-Robot 4. I don't recall anyone ever getting on here to complain about the waste bin getting too full when it says it's full. I kept getting litter sludged up all over the carbon filter. This time it got so full that the globe got stuck open because litter was setting off the pinch detect sensors., Litter-Robot 4 I set up my litter robot maaaybe 5 hours ago. My cats have not gone near it once yet. ... They have always used new litter boxes before…) And the sensors already went off on my phone saying they were dirty but it hasn’t even gotten to do even one cycle yet since I set it up. It kept blinking red, reminding me of the “ring ..., First, you'll need to inspect specific areas of your Litter-Robot to ensure the sensors are clean. Let's take a closer look at the curtain sensors located in the bezel. Any debris near the curtain sensors, such as dust or cat fur, can interfere with these sensors. ... Litter-Robot 4 Laser Board (Contact Customer Experience) | Installation ..., Litter-Robot 4 is equipped with OmniSense™ detection that utilizes laser and weight sensor technology to provide real-time litter and waste drawer levels. There are three laser sensors located in the top of the bezel, called curtain sensors, that accurately measure the capacity of the waste drawer. , Litter-Robot 4: Red Light Bar Flashing (Cat Sensor Fault) Litter-Robot 4: Red Light Bar Momentary Flash (Control Panel Lockout Mode) Litter-Robot 4: Red Light Bar with Partial White Flashing (Globe Position) , Phone and Chat support available Mon-Fri: 9AM-7PM EST and Sat: 9AM-5PM EST, or submit a ticket anytime. Chat with us 1-877-250-7729 Submit a ticket. Learn how to troubleshoot the cat sensor on your Litter-Robot 3. Find solutions to issues with yellow flashing lights, interrupted cycles, and more., 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 ..., I just got the Litter Robot 4 on Sunday and it is already showing the waste drawer is full even though the waste is only halfway full in the drawer. Even after shaking it it still shows full. ... Last time I could get it to fix itself when it read 90% even though it was only 10-20. I vacuumed the sensors on the top of the globe, then manually ...