Litter Robot III Open Air Troubleshooting – All 3 Lights Flashing

Litter Robot III Open Air Troubleshooting - All 3 Lights Flashing - Floppycats Review

Several weeks ago, I noticed that our Litter-Robot III had all three lights on it blinking.  I have waited to post about this to make sure that the instructions we were given as well as the steps we took fixed the problem.

I tried a quick reset – as well as unplugging and plugging it back in (my “quick fix” for anything electronic).  But, no luck, it either remained in the stuck position or it returned to it shortly thereafter.

So I decided to write Litter-Robot’s customer service and see what troubleshooting advice they could give.  They wrote back a very detailed email, including photos of how to go about fixing it.  I also decided to do a video of the process, so you could see how easy it was to fix.

Litter-Robot Customer Support
Phone: 1-877-250-7729 | Hours: 9am – 7pm ET

We have had our Bisque-colored (we just got a Grey LR III) Litter-Robot Open Air for 3 years.

Litter Robot III Open Air Troubleshooting - All 3 Lights Flashing

Here’s the email that LR sent me that I reference in our “repair” video:

If the Litter-Robot 3 cannot find the Dump and/or Home position, the control panel will display 3 lights blinking. If you have recently disassembled your globe, please advise.

There are a few reasons why you could be getting this error message. We will touch on each component.

If your unit was purchased on or after February 21, 2018 (Serial Number 078843 and above), your unit will not have an internal shield. It will, however, still have the black key on the back of the globe. If you do not have an internal shield, please disregard the shield instructions (first video link) in number 3. You may still check the key/spring (second video link).

1. Excess Weight

If there is an excess weight inside the unit, this will cause the motor to slow down and the unit will not complete a cycle in the allotted timeframe (~2 minutes, 45 seconds). Please check your litter level to ensure that you are at or below the fill line. If necessary, remove some litter from the globe so that the level is an inch below the fill line, then press the Reset button. It’s best to empty the waste drawer as well if it’s getting close to full; this will eliminate that excess weight also.

2. Power Supply

Please check that the adapter you are using meets the specifications required: 15VDC regulated adapter 400mA to 1000mA.

Please make sure there is no damage to the power cord.

If your unit is plugged into an extension cord, please try a wall outlet to see if this makes a difference.

There is also a pin inside the jack on the base. It should have a split in it. If there is no split, I recommend splitting it open with something small.

3. Internal Shield/Key

If the internal shield or black key isn’t set properly, this will cause cycling issues. When your unit is in the home position, the shield should be in the top left corner and the key should be straight up and down sitting in the groove of the base.

Below are two videos that show you how to reset the shield and key if necessary.

Another option is to remove the internal shield. The internal shield is not necessary for the unit to function. To remove the shield, you will need a Phillips head screwdriver. Remove the screw from the center of the black key on the back of the globe. Once the key is removed, you can easily pull the shield out from the entrance of the globe. If you decide to remove the shield, please let us know and we will send you a key-hole plug for the back of the globe.

You can see the video on how to remove it here.

4. Bonnet

If the bonnet is not seated properly, this will cause the unit to start and stop during a cycle. To make sure your bonnet is seated properly, please follow these instructions:
Disconnect the bonnet
Gently flex the two front bonnet tabs outward as close to a 90-degree angle as you can and hold for 20-30 seconds. This will remold the tabs to have a more secure connection.
Reattach the bonnet. There are four tabs total: two curved tabs in the back, two on the sides. The two curved tabs in back tuck into slots in the base. If they are sticking out, the unit will not cycle properly.
You should feel a secure snap and hear a solid “click” when placed back into the slot and the bonnet should sit closer to the base.
Assembly Instructions.
Video of removing/replacing bonnet.

5. Globe Lift

If the globe is encountering resistance that is lifting it out of position as it cycles, friction will occur between the plastic of the globe and base, causing the magnets in the globe to skip the position sensor which will cause the 3 blinking lights.

Out of the box, the Litter-Robot has a silicone lubricant layer that can wear off over time. An easy solution to this is Pledge Furniture Polish (if you have a different brand of furniture polish, it will work as well). We would ask you to please simply spray the polish on a paper towel and wipe the track of the base where the globe sits. Please avoid getting it on the black gear. I have attached a picture of the track of the base for your reference.

Always remember to press reset after making changes to the unit. Run a few test cycles by pressing the cycle button.

If you’ve completed these troubleshooting steps and your unit is still having trouble, please advise.


Looking to buy a Litter-Robot? Buy the Litter Robot Open Air (save $25 through this link).

There is no Litter Robot Open Air promo code – just the $25 off through our link above.

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Hi, I’m Jenny Dean, creator of Floppycats! Ever since my Aunt got the first Ragdoll cat in our family, I have loved the breed. Inspired by my childhood Ragdoll cat, Rags, I created Floppycats to connect, share and inspire other Ragdoll cat lovers around the world,

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  1. Anonymous says:

    I can’t see the videos. It says they are private

    1. weird, they aren’t private for me…double and triple checked.

    2. Says private when I try to watch too

  2. Pieter Breitner says:

    Thank you so much, Jenny. My LR has been acting erratically for a few months, stopping and starting during the cycle with the car sensor light showing. As it would eventually complete the cycle, I shrugged it off. However, this morning it was imitating a jukebox with all three lights blinking in sequence. You were my first Google hit.

    As luck would have it, I *do* have silicone spray, and the LR is going through its fourth or fifth test cycle with nary a stutter.

    Thank you so much.

  3. Julie Kosoglow says:

    I have tried the above video and definitely don’t have too much litter in it. Our unit is only a few months old and is still saying Dump Position Fault. Please advise.

    1. OK – sounds like you want to reach out to Litter-Robot customer support – include as much detail as you can with them. If you’ve only had it a few months, then it will be covered under warranty. In general, it’s best to go to the manufacturer first =)

    2. Michelle Royall says:

      Julie, I am having the same problem. My litter robot is brand new and of course Litter Robot is not answering the phone. Did you ever find out what the problem was? thanks.

      1. It’s best to email them – think they are all working from home because of pandemic, so calls are taking longer.

      2. Litter-Robot says:

        Hi Michelle, Did you call 877-250-7729? If so, I’m unsure why you were unable to reach our team if it was during business hours but do apologize for any inconvenience. You can also email if you would prefer.

  4. Very late response to this, but THANK YOU! For me, it was the mentioned scenario involving overfilling the clean litter. The added weight definitely caused some friction and motor strain. I’m positive that it caused the globe to be weighed down and out of alignment just enough so that the positioning magnets could not align. Hence I came home to my Litter Robot stuck upside down- and it would not return to its correct home position either. All because of too much weight from extra litter! (The idea of cleaning the metal bonnet tabs and bending them a bit to ensure a good connection is also a valuable hack.) Thanks again! My Persians are once again happy gals.

  5. WOW!! SUPER PAWESOME & BRILLIANT TROUBLESHOOTING POST, PICS & VIDEO, Jenny!! WTG!! Fascinating!!!! Great job!!! LR customer service & tech support is TRULY PAWESOME & IMPRESSIVE!!! 🙂 <3

    Big hugs & lots of love & Happy Holidays!

    Patti & Miss Pink Sugarbelle 🙂 <3

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