If the installation fails, you must restart the advanced installation. You can restart it by clicking on "Start" or directly from your product settings. "Manage my home" menu, "Room", "Product", "Advanced remote control settings". Please follow these recommendations: Some tips for advanced installation - Make sure the remote control batteries are fresh - Make sure the remote control is turned on - Deactivate all special modes beforehand and configure the remote control with a basic function (e.g.: Air conditioning 28ºC, Fan speed 3). - Keep it away from any infrared-powered products (TV remote control, motion detector on lights, etc.). During this step, the Smarther AC will pick up the infrared commands from your remote control, but it can also pick up commands from other products nearby. - Make sure your smartphone is not too close to your product. The facial recognition of most smartphones can cause interference. - Stay 1 meter or less from your product and point your remote control at the Smarther AC when pressing the buttons. - Wait for a beep between each button press. This means that the Smarther AC has received the command from your remote control. - If in doubt, it is best to go back and repeat the step. - If you are already in the requested state, there is no need to change state to return to it. - At the end of the advanced configuration, please leave your product powered on. It may take some time for the settings to sync. Once the setup is complete, you will receive a notification and will be able to control your air conditioner from the Home + Control app. In the event of multiple failures, your air conditioner may use a language other than the traditional ones. This does not mean that your equipment is not compatible. If the error persists, please send us photos of your remote control (front and back) specifying the brand and exact reference.