Hello, I have a carrier thermostat systxccitc01-b and it suddenly won't connect to my Orbi Router. The strange thing is it worked fine for almost a year. I found another thread to change the following CTS/RTS Threshold to 2347 and that didn't fix it. I turned off the AX for 2.4GHz and that didn't fix it. RBR850 / RBS850 Firmware Version 4.6.14.3 I'm open to options, as I would love to have this connected to a wifi network. I can turn my phone on and use the same passphrase and it works fine. So the passphrase is not too long. Firmware is up to date. Let me know if you got solutions.

"Make sure you tried a full reset of the networking on the thermostat (like "forget network") and then pair again to your Orbi wifi SSID." I have done forget and set up 3 or 4 times now. It will connect but won't talk with their servers, but when I bring up my router settings it doesn't show the device is connected to the internet.

This is sort of a "Twilight Zone" hypothesis.... I once had a device that showed "no internet" despite being connected to WiFi and being restarted several times. I finally opened the Orbi web interface (http://orbilogin.net ) and navigated to Access Control where I found: Access Control was enabled. (although I never enable Access Control.) and This device was shown as Blocked. My hypothesis was that at some point I was messing around with the damn Orbi 'app' and must have "slid my fat finger" and "Paused" this one device without meaning to. When I edited the device back to "Allowed" and disabled Access Control, suddenly the device had internet again. Blocked apparently does not mean, "Cannot connect to WiFi" but instead means, "Can connect (because it presents the correct SSID/password) but is not allowed to access the network." Or.... not what's happening with this thermostat (sorry to waste your time).

bowler304 wrote:Hello, I have a carrier thermostat systxccitc01-b and it suddenly won't connect to my Orbi Router. The strange thing is it worked fine for almost a year. I found another thread to change the following CTS/RTS Threshold to 2347 and that didn't fix it. I turned off the AX for 2.4GHz and that didn't fix it. Make sure you tried a full reset of the networking on the thermostat (like "forget network") and then pair again to your Orbi wifi SSID.

bowler304 wrote: Hello, I have a carrier thermostat systxccitc01-b and it suddenly won't connect to my Orbi Router. The strange thing is it worked fine for almost a year. If the thermostat "worked fine" for almost a year, then there should be no reason to modify the router settings. If it worked for a year, it should still work. How did this situation come to your attention? What happens when you go through the setup steps on page 58 of the user manual? https://www.shareddocs.com/hvac/docs/1009/Public/0C/OMSYSTXCCITC-08.pdf

Are you using wpa2 for security?

Carrier Thermostat systxccitc01-b can't connect to Orbi AX6000 RBR850 / RBS8540

16 Replies

Mikey94025
Hero
Feb 01, 2023
bowler304 wrote:
Hello,
I have a carrier thermostat systxccitc01-b and it suddenly won't connect to my Orbi Router. The strange thing is it worked fine for almost a year. I found another thread to change the following CTS/RTS Threshold to 2347 and that didn't fix it. I turned off the AX for 2.4GHz and that didn't fix it.
Make sure you tried a full reset of the networking on the thermostat (like "forget network") and then pair again to your Orbi wifi SSID.
- bowler304
  Tutor
  Feb 01, 2023
  "Make sure you tried a full reset of the networking on the thermostat (like "forget network") and then pair again to your Orbi wifi SSID."
  
  I have done forget and set up 3 or 4 times now. It will connect but won't talk with their servers, but when I bring up my router settings it doesn't show the device is connected to the internet.
  - plemans
    Guru
    Feb 01, 2023
    So its connecting to the wifi?
    
    Just not back to their server?
    
    What modem/gateway is the router connected to?
    
    Are you using Armor?
CrimpOn
Guru
Feb 01, 2023
bowler304 wrote:

Hello,

I have a carrier thermostat systxccitc01-b and it suddenly won't connect to my Orbi Router. The strange thing is it worked fine for almost a year.

If the thermostat "worked fine" for almost a year, then there should be no reason to modify the router settings. If it worked for a year, it should still work.

How did this situation come to your attention?

What happens when you go through the setup steps on page 58 of the user manual?

https://www.shareddocs.com/hvac/docs/1009/Public/0C/OMSYSTXCCITC-08.pdf
plemans
Guru
Feb 01, 2023
Are you using wpa2 for security?
- bowler304
  Tutor
  Feb 01, 2023
  WPA2-PSK[AES]

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Carrier Thermostat systxccitc01-b can't connect to Orbi AX6000 RBR850 / RBS8540