Replace broken swing flap - Whirlpool ACQ108XL Air Conditioner

this indicates a fault in the drive motor for the louvres. There is a small electrical motor that works though a set of plastic gears to control a plastic arm
I suggest that you talk with the parts department for availability of the part and then get the carrier technician to fit it
If it is under 5 years old it should be covered by warranty.

remove soap draw, remove screws on left hand side(T20), open drum door, three 10mm bolts around drum, open filter flap and unhook black hose from flap if there is one, the bottom left hand corner sits on top of a metal clip to hold it in position just pull to remove,

Just in case someone comes across this in the future looking for an answer like I did. I jerry-rigged a solution to keep my Tech Solution TS-4500 going as I'm in the midst of a major shred job. Here's how I jerry-rigged a replacement pin for the flap:
1) I straightened a coated paperclip.
2) Wrapped the two ends together in duct tape, fitted to the size of the insert on the top of the shredder that the pin goes into.
3) Snipped off the excess paper clip at the opposite end of jerry-rigged pin, so there isn't more metal inside the shredder than necessary. (Leave enough to attach to the flap [See next step].)
4) Duct-taped the paperclip to the flap to keep it in the correct position.
5) Inserted the hard plastic pin into its slot and then the jerry-rigged pin into its slot.
The flap is able to swing up and down, and I've had no problems using the machine and the machine has had no problems knowing when it's full and auto-stopping.

On mine one end of the spring broke off in the hole on the door. It was on top of the hinge so it looked like a pivot pin. I found that this was the second hole for the spring. I pushed the end of the new spring up under the hinge and popped the broke piece of old spring out. Now I could see the 2 holes. You then need to put the spring into each hole. The hole on the flap also needs a white plastic sleeve if that is missing. that goes on the end of the spring and fits into the flap hole. Then the trick part is understanding how the spring works? If you put both ends of the spring in the holes and shut the flap, it now stays in position to close and be flipped open by the guide that swings it open to seal.

Good Luck.

I go to the dealer spares department when I have a problem like this and have them show me a picture of the vent system in the car and I point to the bit that I want. Saves a lot of time and energy when you can point to the bit As to how to replace it the break down will also show the area and you can see if there are clips or what to get the bit replaced.

No... unless the door is removed entirely or you customize.

If you take the glovebox out, you can see the air inlet servomotor on the left side of the blower housing. (SEE DIAGRAM)

This is very likely to be what you are hearing. This is a quite common problem. This servo is electronicall controlled. When the HVAC is turned on, the servo is supposed to go through a "full swing" to test itself. Many times, things (papers, napkins, drinking straws, etc.) from an overflowing glove box get jammed in the recirc-air flap right behind the glove box. when this happens, the servo cannot make a full swing and sometimes it damages the servo, which continues to attempt the full swing and keeps clicking because it is stripping its internal gears trying to make it happen.
You will most likely have to remove whatever it is that is jamming the door and replace the servo.

Remove cover check cogs attached to motor and check if motor is moving when set to swing

Go to littletikes.com. They have a seciton to choose outdoor products and you can drill down to the swing and slide castle. All the replacement parts are available there.

If it won't latch after cleaning the latch and making sure that everything is seated well, get in touch with Dyson, they're great about making things right with their vacuums.