The LED light is out for the climate control on the AC.

Might try disconnection of battery as link below
https://www.chryslerforum.com/forum/chrysler-pacifica-15/2004-chrysler-pacifica-climate-control-problem-29267/
https://www.youtube.com/watch?v=BcDg-5kkCzE
https://www.youtube.com/watch?v=0iOTjoVDy48
click on see more on link below
https://www.youtube.com/watch?v=0iOTjoVDy48

Umay hava failn instrument cluster where u swap it at napa for a rebuild. Olders cars also hav wiring issues n connection flaws. Unplug any usee ..clean n plug back in..half the time it fixes it. If its in the harness it cud b game over..consult apro..but worthit..newer cars r worse. U may not really needa display if ugit use to it

sounds like a blower motor resistor or bad relay. Blower motor resistor is so you don't burn up the blower motor.

the vacuum pipe to the heater core in the engine compartment is either cracked ,holed or even just come off the fitting

its one of 2 1st eather your battery needs to be replaced or the dynamo needs to be repalced try to replace the battery first

your blend door motor is stuck or it may need to be replaced. the blend door controls the temp from heat to a/c

If the air blows out of all of your other vents then you have either had an actuator go bad which controls which ducts the air flows through, or the shaft that has the "flap" on it has popped loose and no longer moves which will only allow air to go to the vents that are not locked. The easiest way to find out would be to get under the dash and start at the fan and trace air flow til you find the problem.

I looked over all the wiring diagrams can't find anything. I would check all your fuses under hood black box by battery

Under the dash drivers side there are mode motors that control where the air comes from replace bad one or both the bottom one is recirculate. You could take a volt meter and see which one has power when you push button

The fuse for the radio/CD/DVD is seperate from the AC/Heat. Open fuse box under hood on right. follow fuse schematic to ac fuse position (note there are two so if not one, then it is the other) use the fuse puller that is in the fuse box, then replace the fuse. Good luck.