The option to open Smart Vents 50% is only available in Manual mode.
If a Smart Vent won't open to 50% in Manual mode, try recalibrating the Vent by following these steps:
If the Vent is currently OPEN:
- Issue a CLOSE command, wait 60 seconds
- Issue an OPEN command, wait 60 seconds
- Issue a CLOSE command, wait 60 seconds
If the Vent is currently CLOSED:
- Issue a OPEN command, wait 60 seconds
- Issue an CLOSE command, wait 60 seconds
- Issue a OPEN command, wait 60 seconds