**Smart Fan & Light Canopy Module (VZM36) Power-On Behavior**

Switches Firmware Discussion
1

TL;DR: Improve the power-on behavior for the Smart Fan & Light Canopy Module (VZM36) when using the action button by ensuring the fan resumes its last set percentage when turned on, rather than cycling to the next setting.

First, we need to separate the logic of the fan percent vs the fan state.

  • Fan State: Off or On
  • Fan Percent: 0 (Off), 33 (Low), 66 (Med), 99 (High)
  • The Fan State can be Off with the percent set to 0 (Off), 33 (Low), 66 (Med), or 99 (High).
  • Fan State and Fan Percentage are independent.

When paired with the Blue Dimmer Switch (VZM31-SN) and using the action button to control fan speed, here are suggested improvements:

  1. [Fan State = OFF or ON] AND [Fan Percentage = 0]:
  • Pressing the action button should cycle the fan to the next highest setting, Low [33].
  1. [Fan State OFF] AND [Fan Percentage = 33, 66, or 99]:
  • If the fan is in an OFF state but was previously set to a value (e.g., Medium [66]), pressing the action button should turn it on to the previous setting (Medium [66]).
  • It should not cycle to the next setting (High [99]).
  • The current behavior cycles only the Fan Percentage when pressed. If the fan is OFF but set to a previous percentage setting, this turns the fan on and cycles to the next percentage with one press. This is undesirable, as it should just resume the previous setting and then cycle through power levels when pressed additional times.
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