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Failure Connection (Honeywell WIFI Thermostat)

prosportal
Aspirant

Failure Connection (Honeywell WIFI Thermostat)

I have had a Honeywell Wi-Fi Thermostat (RTH6580WF) for a number of years now. Within the past 6 months, I purchased a Nighthawk R6400. Since then, i always get "Connection Failure" on my thermostat; despite doing numerous resets.

 

Today, I decided to fire up my phone's hotspot and try to register the thermostat through that wireless SSID and it worked like a charm. That leads me to believe there's something not configured correctly on the router itself.

 

Has anyone else seen this and could you offer a solution?

 

Wireless Setup:

 

Broadcasting SSID

Channel: auto

Mode: Up to 450Mbps

 

Security:

WPA2-PSK[AES]

 

 

Model: R6400|AC1750 Smart WiFi Router
Message 1 of 10

Accepted Solutions
duckware
Prodigy

Re: Failure Connection (Honeywell WIFI Thermostat)

Try dropping 2.4 GHz mode mode from "450 Mbps" to something lower (changes from 40Mhz mode possible to 20Mhz mode)?

View solution in original post

Message 5 of 10

All Replies

Re: Failure Connection (Honeywell WIFI Thermostat)

These things usually come down to the device you are trying to connect.

 

Have you sought help in the places where they support the Honeywell Wi-Fi Thermostat?

 

 

 

 

Just another user with a set of boilerplate macros.

My network DM200 -> R7800 -> GS316 -> PL1000 -> Orbi RBR40 -> Orbi RBS50Y -> RBS40V
Message 2 of 10
prosportal
Aspirant

Re: Failure Connection (Honeywell WIFI Thermostat)

I have not. I began this troubleshooting expedition by connecting it successfully to other routers. So far, I have been successful on a Linksys router and my phone's hotspot, but the thermostat will not connect to my nighthawk router's wifi. Therefore, I have reached out for assintance on this forum first.

Message 3 of 10
FURRYe38
Guru

Re: Failure Connection (Honeywell WIFI Thermostat)

Try setting manual channel 1, 6 or 11 on 2.4Ghz. 


@prosportalwrote:

I have not. I began this troubleshooting expedition by connecting it successfully to other routers. So far, I have been successful on a Linksys router and my phone's hotspot, but the thermostat will not connect to my nighthawk router's wifi. Therefore, I have reached out for assintance on this forum first.




My Setup ISP SparkLight | Internet Cable 1000↓/50↑ CAX30 Mode Mode  | Wifi Router RBK963 and RBK853 Router mode | Switches NG GS105/8, GS308v3, GS110MX and XS505M | Additional NG HW: C7800/CAX3/CAX80/CM1100/CM1200/CM2000, Orbi: CBK40, CBK752, RBK50, RBK853, RBK752, RBK953, SXK30 | NightHawk: MK63, R7000, R7800, R7960P, R8000, RAXE500, RAX120v2, RAX50v2, XR450/500/700/1000, EX7500/EX7700

Message 4 of 10
duckware
Prodigy

Re: Failure Connection (Honeywell WIFI Thermostat)

Try dropping 2.4 GHz mode mode from "450 Mbps" to something lower (changes from 40Mhz mode possible to 20Mhz mode)?

Message 5 of 10
prosportal
Aspirant

Re: Failure Connection (Honeywell WIFI Thermostat)

So, it looks like this thermostat will ONLY work on "Up to 54mbps" which has a negative impact on all my other devices, but suppose that's the limitation of wireless- G

Message 6 of 10
FURRYe38
Guru

Re: Failure Connection (Honeywell WIFI Thermostat)

The router should be able to handle 54Mb for some devices and up up higher speeds for others. 

 

Be sure to set WPA and WPA2 and AUTO and see. 

 

My Setup ISP SparkLight | Internet Cable 1000↓/50↑ CAX30 Mode Mode  | Wifi Router RBK963 and RBK853 Router mode | Switches NG GS105/8, GS308v3, GS110MX and XS505M | Additional NG HW: C7800/CAX3/CAX80/CM1100/CM1200/CM2000, Orbi: CBK40, CBK752, RBK50, RBK853, RBK752, RBK953, SXK30 | NightHawk: MK63, R7000, R7800, R7960P, R8000, RAXE500, RAX120v2, RAX50v2, XR450/500/700/1000, EX7500/EX7700

Message 7 of 10
prosportal
Aspirant

Re: Failure Connection (Honeywell WIFI Thermostat)

Official response:

 

Thank you for contacting Honeywell.

 

We sincerely regret the inconvenience caused.

 

Honeywell thermostats only operate on the 2.4GHz range meaning they are only compatible with wireless 802.11 b/g/n.

 

They are not compatible with the 5GHz networks, 802.11 n/ac. There is not a need for this compatibility since the thermostat is a low bandwidth device. Also, the 2.4GHz frequency gives a better distance and penetrating power vs the 5GHz range.

Message 8 of 10

Re: Failure Connection (Honeywell WIFI Thermostat)

That doesn't help. Of course they do not support 5 GHz. They simply won't see it or try to connect.

 

What you need to know is any restrictions on the 2.4 GHz. That is what @duckware is getting at.

Just another user with a set of boilerplate macros.

My network DM200 -> R7800 -> GS316 -> PL1000 -> Orbi RBR40 -> Orbi RBS50Y -> RBS40V
Message 9 of 10
rtclemen
Aspirant

Re: Failure Connection (Honeywell WIFI Thermostat)

I found this on the Honeywell website: https://yourhome.honeywell.com/en/questions/lyric-thermostat-compatibility-11

Afer my contractor and I spent several hours trying to get a Lyric T6 to connect, I checked my routers for Wi-Fi Alliance certification on their website (https://www.wi-fi.org/) and found that neither of the two are compatible.

 

Good luck!

Message 10 of 10
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