The is a replacement or OEM (Original Equipment Manufacturer) remote control. It is a standard handheld IR transmitter used for:
A: This is X-Fan (drying) function. It dries the coil to prevent mold. Can be disabled via remote if unwanted. Carrier Rfl-0601el Manual
Many users return the remote thinking it is broken when a setting is just locked. Here are the "hidden" instructions from the manual: The is a replacement or OEM (Original Equipment