Keep the light display OFF when AC turns ON?

[h0ckeysk8er (Bruce Pinsky)]

@nayelyz

Welcome to the SmartThings Community, @DVCamargo!

It’s not possible, there’s no way for us to know if a scene is done executing, what you can do is create a Rule using the last action of a scene as the trigger.
For example, if the last action is turning the AC on, you can use that as the trigger.

Another option would be to use a virtual momentary switch as the last action in a scene and then trigger a Routine based on the switch being pushed. I use this method to trigger Alexa to turn on/off/manage selections on my home theater receiver. I use this Edge driver [ST Edge] vEdge Creator: a virtual device generator for end users. If you don’t have a hub, you could create a virtual button using the ST Advanced Web App.