Device Driver for Nest Thermostat Fan?

[roger89]

Is there a "Switch" Type device driver for Nest Thermostat Fan? Nest Thermostat Fan would either be "auto" (off) or "on".

[csteele]

Thermostat drivers use "capability xxx" to pick from a list of abstractions that are supposed to encompass the entire universe of similar devices.

The Hubitat documentation for a Thermostat has a thermostat fan defined within as:

• 

which allows the fan to be synced to the running state of the HVAC unit (auto) or forced to on. Circulate is not well defined because vendors use that word or similar words for whatever they design their fan to do that isn't auto or on

If "capabilities xxx" doesn't fit the totality of a device, then code can be written to use additional attributes and commands.

I don't have/own a Nest but I do have an old Honeywell WiFi thermostat and maintain a driver for it.

My driver does exactly what I mention above:

• 

It uses all the "capability xxx" options, and then extends that to add additional features.

All of that to say.. there's no "switch" that is standalone to implement Auto / On

[roger89]

Thanks for your reply. I was hoping there could be a switch type device driver for thermostat fan, because operating fan on dashboard involves multiple taps.

[csteele]

create a Virtual switch and use RM to make the switch change the fan.