First: Post a screenshot of the rule and the device info and preferences for your dimmer. Probably should also post which version of the hub you have, which firmware version, and several of the other things that are stated in this post: ‼ READ FIRST - Before Posting in Get Help
Second, hopefully you are using the dimmer in smart bulb mode to control a relay or something else that controls the fan. The dimmer you are using is not rated to directly control an indicutive load like a fan. Additionally, using a dimmer WILL burn out the motor in your fan.
