About TL5150

From RESOLVED to now UNRESOLVED.... After about 6 months of connectivity after creating a separate 2.4 wifi network, and with the thermostat happily connected regularly to both xFi and Carrier Infinity network, all of a sudden it is now dropping from xFi network most of the time, thus dropping from Carriers Infinity servers disrupting remote functionality .  Not sure what changed all of a sudden: there are no new devices on 2.4 wifi network, no change in bandwidth, no change in proxy identifier, etc.  Perhaps the firmware push to either Thermostat or to the xFi Gateway created a new connectivity problem.  Have tried multiple times to "reboot" the thermostat when after a perod of time it eventually drops again from 2.4 xFi after initially reconnecting.  Anyone also experiencing this?   ... View more

ok, my thermostat mode is slightly different model:  SYSTXCCITC01-B  Not sure about the re-boot sequence for the other type of thermostat, Im afraid.  I really found some good tech help from Carrier at 1 800 CAR-RIER on getting the thermostat reconnected to their server, once the wifi connection was solved with Xfinity.   Anyway, they walked me through reboot and re-connect to Carrier Infinity server.  Too many "..finitys".  ... View more

G-Man - I spent a few calls to Carrier tech support when I had same issue, and each time they recommended me to re-boot the thermostat simply by touching the screen in a "blank" area and holding for approx 10 seconds.  The screen will reboot.  It should then auto re-connect to your new wifi assuming it maintained the updated passwords for new Gateway, and then should re-connect to Carrier Infinity servers next.  You can tell since it will show theweather forecast icons below room temps on screen.  I must say, it took me a few tries doing and re-doing these steps for the thermostat to maintain wifi and Carrier Infinity server connectivity.  Good luck... ... View more

Bob522 (and others) - Over the past five days or so, my Carrier thermostat has been able to connect to the Xfinity Gateway (2.4 band only), and has mostly stayed connected, allowing the thermostat to connect to the external Carrier server.  It does seem to drop from Wifi occasionally, but only for a minute or two.  Not entirely sure what occurred that helped the thermostat stay connected (perhaps just time and/or a backed up software update from Carrier?), but it seems to be maintaining the connection to my home wifi.  Thanks to all for your advice and recommendations. ... View more

I also tried both the WPS method, as well as the standard searching for wifi network and manually entering in wifi network password, but still was not conecting.  Since the first time this issue came up, it has connected and then dropped about 1-2 hours later.  Not sure why, as the number of wifi devices is not changing or any other known 2.4ghz interferences.   ... View more

Hi ComcastDaniella - Thanks for suggestions.  Yes, my newly installed Comcast Gateway has both Wifi bands 2.4 and 5.0 as separate wifi networks.  The thermostat only "sees" the 2.4 band when searching for networks, and still will not connect to it using the shared password for both 2.4 and 5.0 wifi bands.  Rebooting thermostat did not resolve either.  Wondering if Carrier thermostats are not part of the Comcast approved devices population and thus will nto allow connectivity ( I do not have Comcast Home services).  Other 2.4 devices, like older HP printer is able to connect with no problem. ... View more