Ambi Climate will only change modes by your settings either by timers or manually doing so. Sometimes you may find your Ambi Climate being switched to Manual mode and this could be if you've used

  • the physical remote control, or 
  • Amazon Alexa's Smart Home Skill or 
  • Google Home Assistant's Direct Action

To check which was the reason causing this, go to "Analytics" >" Deployments". 

If it's marked as