Coffee bean light won't go out when full and coffee won't work

SOURCE: After using oily coffee beans the machine drops

Hi
The ventilate is just opening the steam valve for just water. Don't push the button for steam. Your grinder needs to be a little coarser. Turn the big know in the bean hopper to a larger #, about 2 to 4
# higher.
You need to clean the brew head in the brew unit.
Holding the handle, the top left side is the brew head. There is an outlet pipe that exits the front, towards the door (looks like an "L" pipe). 2screws hold it to the top. Remove the 2 screws while holding the manifold ("L" pipe assembly). Once they are removed, lift the l assembly off (be careful, there is an O-ring, spring with a black seal (don’t loose it or your out of luck).
Now remove the brew screen, by holding the screen with your finger and twisting the thumbscrew (remember thumbscrew, DON’T use the key to install the screen, use your fingers...
Once the screen is out, look at where the screen was. There are 2 holes. 1 big one in the center and a small one to the side.
With the brew unit upside down over the towel insert a paperclip into the small hole and force anything out the other side. I have gotten worms almost a 1" long from this passage. The paper clip has to go from this side to prevent damage to the seat on the other side.
Clean then reassemble. Brew unit on towel right side up. Then the spring with black seal down.
Now the O-ring over the spring, then place the manifold on top of that with the pipe towards the handle side. Insert your screws (I turn them backwards a little with a little downward pressure until they feel like they drop into the threads. They should turn down easily, if not back them up a little more ( we are trying to find the old threads) and tighten. Install screen, and tighten with your fingers. The screen just needs to be flush with the bottom of the brew head.
Install in machine and test