re: Nest nationwide outage. Honeywell just fine.

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Funny, but this does bring up some concerns. What really does happen? Does it hold at whatever temp it was set at before the outage? Do they stop functioning altogether? Does the unit remember anything at all about its schedule?

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Yeah, I honestly know very little about the Nest and how it functions. I have a basic programmable, non-wifi thermostat at home that I don't even program (I work from home, thermostat stays at 69F 24/7, auto-changes to heat when below 66. I don't even have a C-wire). It seems crazy to me that in the event of a network outage, the Nest wouldn't simply default to an internally stored schedule.

But the issue CAD mentioned where a network outage/glitch combo also caused the Nest to inaccurately report a low battery (and inexplicably not be able to draw power from the C-wire directly) is pretty fricked up.