Mismatch between SmartThings API and SmartThings App

Welcome to the SmartThings Community, @Philippe_Leborgne!

Have you tried sending the command to the device to see its response?

OCF devices such as ACs work more on a plugin (ST App) than an API level. This means that not all the capabilities and values shown in the app will be the same in the API. In this post, I shared more info about their functionality: