Not to beat a dead horse, but… I’m having the exact same problem! Per the Aeotec instructions, I first tried pairing my Aeotec Range Extender 6 (ZW117) at the location where I intended to use it. After multiple attempts, I determined that that wasn’t working. So … I moved it closer … and closer … and closer … to the SmartThings v3 Hub. Still no luck! Eventually, I tried pairing them with the Range Extender about a foot away from the Hub. No dice! Then, I remembered an article JD had written which discussed the internal placement of both the Z-Wave and ZigBee antennas in the ST Hub and the implications of same, so, in frustration, I tried pairing the Extender from all four sides of the Hub from various (fairly close) distances. Again, abject failure in all attempts!
BTW: I have successfully paired various other Z-Wave and ZigBee devices to my SmartThings v3 Hub, and everything works just great. So much so, that I have just launched in Phase 2 of my Smart Home project.
Now, I know JD IS NOT a big fan of range extenders, and I DO UNDERSTAND that any powered Z-Wave device will act as a repeater/extender; but sometimes Z-Wave Range Extenders do have their place as mentioned in some earlier posts to this conversation. In my own application, there is an existing dedicated duplex receptacle, that powers ONLY the wall wart for my SOHO phone system, which is located almost exactly midway between my Hub and two Z-Wave switches that, because of distance and intervening walls, seem just out of range of the Hub. (The receptacle is exactly 21’4" from the HUB with only air separating them and the phone system is about 7’ away from the receptacle on the floor above.) Because I don’t want to take a chance that the phone system might fall victim to some Z-Wave anomaly, I DO NOT want to replace the standard duplex receptacle with a Smart Z-Wave receptacle. Also, the phone system is all hard-wired, so there is no RF/EMI zinging around in that area.
After putting the Hub in pairing mode and pressing the button on the Extender, the LEDs on both the Hub and the Extender began blinking appropriately and the SmartThings app on my phone indicated that pairing was “30%” complete. Unfortunately, that little circle in the app never advanced past “30%” in any of my numerous attempts to pair these devices, and each attempt eventually timed out and the app told me that the attempt had “failed.”
Between pairing attempts, I meticulously followed the Aeotec instructions and suggestions from this blog regarding excluding the Aeotec Range Extender 6 from the network and also returning it to its factory settings.
During my various attempts at pairing, at least in my interpretation of the color and the blinking pattern, the LED on the Extender indicated that the Extender HAD PAIRED with the Hub. However, when I reviewed the devices connected to the Hub, the Extender was not listed among them (and I tried accessing the list of paired devices in various ways). Interestingly, when I went to “exclude” the Extender from the network to which is wasn’t paired before attempting another pairing, the app detected “one device” and eventually SUCCESSFULLY removed it from the network. What the heck?!?
During my numerous attempts to pair the Extender with the Hub, I tried all combinations I could think of to exclude the Extender, not exclude the Extender, reset the Extender to factory specs, not reset it, move to different distances and angles from the Hub, etc., etc., etc. I met defeat at every turn!
I even tried pairing the Extender to the Hub in “secure mode,” even though I know the SmartThings v3 Hub (GP-U999SJVLGDA) does not support the S2 security protocol. While attempting this “secure pairing,” I had a brief glimmer of hope. After pressing the LED on the Extender twice per the instructions, the Extender began blinking blue instead of green, briefly went out, then intermittently glowed blue again a few times over the course of about two minutes, then switched to blinking green, and eventually timed out again as before.
During all of my pairing attempts near the Hub, I was able to observe the blinking green LED in the Hub which confirmed that the Hub was in pairing mode. When the app timed out on my phone and stated that the pairing attempt had failed, the green LED on the HUB simultaneously stopped blinking and turned solid green.
I would greatly appreciate any and all knowledgeable suggestions as to how to successfully address this frustrating dilemma before I resolve this matter myself by taking a ball-peen hammer to my new Aeotec Range Extender 6 (ZW117)!!!