Hello, I just got my zwave T6 Pro installed and I also installed a whole house diffuser into the HVAC ductwork. I am trying to find a way to tell the smart outlet that the diffuser is plugged into to turn on when the HVAC is heating/cooling and turn off when it goes back to IDLE state. I have checked almost ever trigger option and I am at a loss. The only option I can find is mode and that is just what the thermostat is set to (Heat, cool, off)
I also have a T6 Pro. In order to having it trigger based on Heating or Cooling you need to use the Value Change on a Z-Wave JS Value trigger. This trigger option is only available when you select a Z-Wave device as your trigger. CLICK ADD TRIGGER > DEVICE > SELECT YOUR Z-WAVE DEVICE > SELECT VALUE CHANGE ON A Z-WAVE JS VALUE
Once you select this option you will see a bunch of fields for you to enter information into. You can easily find the information you need to enter into these fields by looking in the Z-Wave JS UI Control Panel.
Above each device value you will see a tittle bar that looks like this.
Here is what all these numbers mean.
[7-66-0-state] Operating state
7 is the node id of the device in my network
66 is command class id for Thermostat Operating State Command Class
State is the property
And the 1 or Heating is the what you would enter in the to field.
For Idle you would enter 0 or Idle in the to field and for Cooling you would enter 2 or Cooling.
Here is what your trigger should look like.
platform: device
device_id: 8b4476ff9ea7ac733d8bc749a2af0ad2
domain: zwave_js
type: zwave_js.value_updated.value
command_class: 66
property: state
to: Heating
id: Heating
Thank you soo much. This was exactly what I was missing. I thought about the js value but had no idea what all the property and other lines meant. This soo far has worked flawless the last 12 hours 
For the turn off part, I just put Heating in the “From” box instead and it turns off just as good.
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