I concur with Buckroo, about the refrigerant being low. If you have the ACC system, (Auto climate control) low refrigerant will cause the temperature display, to blink off/on for two minutes after the ignition is turned on, or after the car starts. (Either one) The blinking display is telling you about a fault in the system. Low Freon is a fault that will keep the compressor from engaging. The fuse under the dash powers the controller & display and the fuse under the hood is for the blower motor. If your display and fan are functional, you do not have a blown fuse! The compressor engage function originates at the controller with the selection of the AC function. The controller then sends a signal to a relay to energize the compressor clutch to run the compressor. If your controller has a “low Freon” fault, it will not command the compressor run relay to energize.