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prosportal's avatar
prosportal
Aspirant
Mar 11, 2018
Solved

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;...
Troubleshooting
  • duckware's avatar
    duckware
    Mar 13, 2018

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