Indicates a return to standard settings. According to the query of official website, casarte, a sign with a two-way arrow appears on the display screen of casarte range hood, which is set by the manufacturer, meaning to return to the standard setting and press the power button switch to restart the range hood. Casarte Haier high-end home appliance brand, founded in 2006, is an international high-end home appliance brand inspired by Italian life.