# Fibaro CO Sensor does not pair **URL:** \ **Category:** Devices\ **Tags:** community-app\ **Created:** [May 14, 2026, 10:06am UTC](https://community.homey.app/t/fibaro-co-sensor-does-not-pair/154884 "2026-05-14T10:06:20Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![Norbert\_Vervaet](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/norbert_vervaet/32/81020_2.png) [@Norbert\_Vervaet](https://community.homey.app/u/Norbert_Vervaet)\ **Post date:** [May 14, 2026, 10:06am UTC](https://community.homey.app/t/fibaro-co-sensor-does-not-pair/154884/1 "2026-05-14T10:06:20Z")
I want to replace an ‘old’ Fibaro CO Sensor which has expired (from the year 2017). I’ve removed the device from Homey Pro 2023 and tried to install a new. It keeps on failing. See screenshot of my android device. When I pair, the first and second step succeed (both steps blink green). However, after about 45sec, a pop up shows up saying ‘unable to connect Something went wrong while communicating with the device, please try again’ (See screenshot). I reset the device by longpressing the top-button, releasing it when it starts blinking white and they quickly press it again when it turns yellow. It resets which gets confirmed by a red blink. I’ve paired on 1m distance from my Homey Pro 2023 and even put it on top of it. Both did not help. I’ve also tried mounting the bottomlid on and off to see if that makes a difference. No succes either. Ive tried to pair the old device back again, but it won’t either. So I wonder if it is the device or something in my Homey Pro 2023. Any idea? Thanks in advance, Norbert ![Screenshot20260514110150Homey](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/f/6/f6121a9f271abd7c8279e3c586b4ee11352dc28a.jpeg) ![vlcsnap-2026-05-14-12h11m04s755](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/a/5/a50ecd978876ac198808b45e7f4b99538e47315b.png) ---
**Author:** ![smarthomesven](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/smarthomesven/32/79712_2.png) [@smarthomesven](https://community.homey.app/u/smarthomesven)\ **Post date:** [May 14, 2026, 10:16am UTC](https://community.homey.app/t/fibaro-co-sensor-does-not-pair/154884/2 "2026-05-14T10:16:21Z")
You need to press the pair button every second during pairing to make sure the device doesn’t enter the “sleep mode” during pairing. ---
**Author:** ![Norbert\_Vervaet](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/norbert_vervaet/32/81020_2.png) [@Norbert\_Vervaet](https://community.homey.app/u/Norbert_Vervaet)\ **Post date:** [May 14, 2026, 11:37am UTC](https://community.homey.app/t/fibaro-co-sensor-does-not-pair/154884/3 "2026-05-14T11:37:53Z")
Hi Sven, thanks, I’ve tried three options: 1. Clicking every second after the second tripple klick 2. Clicking every second after the first tripple click, continueing clicking every second after second tripple click 3. Clicking in between first and second tripple click Is one of the options your intention to help? Unfortunately all of the three ended up in ‘unable to connect’. Do I something wrong? ---
**Author:** ![smarthomesven](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/smarthomesven/32/79712_2.png) [@smarthomesven](https://community.homey.app/u/smarthomesven)\ **Post date:** [May 14, 2026, 11:47am UTC](https://community.homey.app/t/fibaro-co-sensor-does-not-pair/154884/4 "2026-05-14T11:47:19Z")
> [@Norbert\_Vervaet](#): > > - Clicking every second after the first tripple click, continueing clicking every second after second tripple click That should be correct. Athom made major changes to Z-Wave on the newer Homey Pro models (2023 and 2026) recently, so you should contact Athom: > **[Support | Homey](https://homey.app/en-us/support/)** ---
**Author:** ![Norbert\_Vervaet](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/norbert_vervaet/32/81020_2.png) [@Norbert\_Vervaet](https://community.homey.app/u/Norbert_Vervaet)\ **Post date:** [May 14, 2026, 1:00pm UTC](https://community.homey.app/t/fibaro-co-sensor-does-not-pair/154884/5 "2026-05-14T13:00:00Z")
Thanks, well, I hope they can fix it. I’ve contact them just now. Cheers, Norbert ---
**Author:** ![DirkG](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/dirkg/32/118897_2.png) [@DirkG](https://community.homey.app/u/DirkG)\ **Post date:** [May 14, 2026, 1:26pm UTC](https://community.homey.app/t/fibaro-co-sensor-does-not-pair/154884/6 "2026-05-14T13:26:29Z")
With Z-Wave devices, it’s usually not necessary to keep them “wake”. With Zigbee devices, however, this can be quite helpful. I started using my first Z-Wave devices in 2018. Currently, I have a total of 84 Z-Wave devices in use, 40 of which are battery-powered. One of the most common issues during inclusion is that the device is included too far away from the Homey, even though the Homey Pro 23/26 and mini support NWI (Network Wide Inclusion). But that’s not the case here. The firmware, which includes various changes related to Z-Wave, is currently still in the RC stage. So if the latest officially released firmware version, v13.1.2 or v13.1.5, is installed, then we can probably rule that out as a cause. Which firmware version do you have installed, @Norbert_Vervaet? Have you ever restarted your Homey or performed a PTP? That’s what I would suggest next. ---
**Author:** ![CyberSponk](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/cybersponk/32/8334_2.png) [@CyberSponk](https://community.homey.app/u/CyberSponk)\ **Post date:** [May 15, 2026, 4:10am UTC](https://community.homey.app/t/fibaro-co-sensor-does-not-pair/154884/7 "2026-05-15T04:10:11Z")
check whether any unknown devices are present under [Homey Developer Tools](https://tools.developer.homey.app/tools/zwave) and remove them. then place the fibaro sensor very close to homey and close/stop all apps except the fibaro app. in this state, attempt to include the sensor. the inclusion process may need to be repeated up to three times. if the inclusion fails, check again for unknown devices before the next attempt and delete them. ---
**Author:** ![Norbert\_Vervaet](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/norbert_vervaet/32/81020_2.png) [@Norbert\_Vervaet](https://community.homey.app/u/Norbert_Vervaet)\ **Post date:** [May 15, 2026, 3:21pm UTC](https://community.homey.app/t/fibaro-co-sensor-does-not-pair/154884/8 "2026-05-15T15:21:51Z")
Thanks Dirk, I’ve got also a lot of devices like you have. Got about 10 years of experience. I followed your tips, moved close to the homey pro controller whilst pairing. I have versions 13.1.5. I do restart each night and performed a Pull the Plug (about 30min). Unfortunately no luck. ---
**Author:** ![Norbert\_Vervaet](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/norbert_vervaet/32/81020_2.png) [@Norbert\_Vervaet](https://community.homey.app/u/Norbert_Vervaet)\ **Post date:** [May 15, 2026, 3:24pm UTC](https://community.homey.app/t/fibaro-co-sensor-does-not-pair/154884/9 "2026-05-15T15:24:25Z")
Hi CyberSponk, thanks, I indeed had about 10 unknown devices. I removed them all. I’ve written a flow which disables all apps and enabled the Fibaro app back. Ive tried three times to pair at a distance of about 50cm. I checked, no new unknown devices in Homey Developer Tools. ---
**Author:** ![CyberSponk](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/cybersponk/32/8334_2.png) [@CyberSponk](https://community.homey.app/u/CyberSponk)\ **Post date:** [May 15, 2026, 5:09pm UTC](https://community.homey.app/t/fibaro-co-sensor-does-not-pair/154884/10 "2026-05-15T17:09:59Z")
now it works? could you add the fibaro to homey? ---
**Author:** ![Norbert\_Vervaet](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/norbert_vervaet/32/81020_2.png) [@Norbert\_Vervaet](https://community.homey.app/u/Norbert_Vervaet)\ **Post date:** [May 15, 2026, 9:26pm UTC](https://community.homey.app/t/fibaro-co-sensor-does-not-pair/154884/11 "2026-05-15T21:26:57Z")
Hi CyberSponk, unfortunately I still can’t pair to Homey Pro 2023. Niels (Athom) will investigate further. I you have any tips in the meantime, feel free to post and I will try. ---
**Author:** ![CyberSponk](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/cybersponk/32/8334_2.png) [@CyberSponk](https://community.homey.app/u/CyberSponk)\ **Post date:** [May 16, 2026, 5:45pm UTC](https://community.homey.app/t/fibaro-co-sensor-does-not-pair/154884/12 "2026-05-16T17:45:34Z")
Do you have another Z‑Wave device that you haven’t connected to Homey yet? If so, as mentioned above, pause/stop all apps except the Fibaro app. Start the inclusion process. When you are asked to press the button three times for the first time, do this on the device that you do not want to include. The second time you are asked to press the button three times, do it on the Fibaro device. ---
**Author:** ![Norbert\_Vervaet](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/norbert_vervaet/32/81020_2.png) [@Norbert\_Vervaet](https://community.homey.app/u/Norbert_Vervaet)\ **Post date:** [May 16, 2026, 6:58pm UTC](https://community.homey.app/t/fibaro-co-sensor-does-not-pair/154884/13 "2026-05-16T18:58:04Z")
Hi CyberSponk, I’ve succeeded adding two other ‘older’ Fibare devices which weren’t paired anymore. Both got into the list of devices in my house. Well, your tip was the right tip, luckily I haven’t thrown away the old CO-Sensor: Step 1: Setting the Fibaro in learning Mode and indeed click 3 times on the ‘old’ CO-sensor Step2: click 3 times on the new CO-sensor That worked! How did you find out? Is it a common procedure to remove those kind of devices? Cheers, Norbert ---
**Author:** ![CyberSponk](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/cybersponk/32/8334_2.png) [@CyberSponk](https://community.homey.app/u/CyberSponk)\ **Post date:** [May 16, 2026, 7:44pm UTC](https://community.homey.app/t/fibaro-co-sensor-does-not-pair/154884/14 "2026-05-16T19:44:03Z")
Hi Norbert, the standard procedure is always the one shown by the respective app when adding or removing a device. I can’t really say how I came up with this workaround — after using Homey for more than 9 years, you occasionally get creative when needed. That said, those situations are rare, because Homey has been running very reliably for me over all these years, with only a few minor issues along the way. Cheers, Nick