Which portafilter fits a faema smart a2 - Faema Coffee Makers & Espresso Machines

First, I am NOT a Faema repairman, Though I've worked on some Faemas, and similar espresso machines.
** Your question is a bit vague so I will try to provide info.
The 'semi-automatic' means you don't have to watch the brewing of the coffee. The machine will 'Dose' out a per-determined amount of water through the portafilter. Manual machines require to operator to turn water on and off to dose. Full automatic will grind the beans, measure and pack the coffee, then brew the coffee with water. Some have the option to froth and dispense milk directly into the cup. The industry usually refers these machines as 'Super-Automatics' They are very expensive and are designed for untrained personnel (not a Barista) to make coffee. There are a number of Home use machines now that provide a similar function but can only produce a cup for personal use and not multiple cups.
** I have come across automatic milk steamer and frother. This can be a simple cappuccino attachment to your steam tip. More updated version have an auto-frother that replaces the steam wand and will do a fair job (IF THEY ARE KEPT CLEAN!). Some machines have modified steam wands with sensor probe that will measure the milk temperature and shut off the steam when heated to set point. You will find all these features handy at first as it gets a novice worker quickly up to speed to produce product. But once they get the proper Barista training, most will not use these features as it's generally faster to produce orders the standard way. (also a good Barista will always present a professional looking cup!)
** I've noted that repeat customers appreciate the effort that goes into a properly brewed cup of coffee. Otherwise we would all go to a coffee vending machine (with instant coffee, Yuk!)
Aloha! youtube; ukeboy57

You're looking for part number 3301135601. I've come across a few Smarts with Due front panels - so measure your keypad: if it's 68x58mm you need a Due version instead.

It's beeping because it's in programming mode. Usual reason with a machine of this age is that the touchpad has failed. Water gets into the touchpad membrane after a while, which makes the controller think a button has been pressed. If it thinks the STOP button is being pressed/held for more than 5 seconds, it goes into programming....
To confirm: Remove drip tray, take lid off controller box and unplug one of the flat plugs from the keypad (there will be two long thin plugs next to each other, and probably a space or two for extra plugs). When you get the correct one, the beeping will stop and the machine will resume normal operation on the working keypad.

Assuming you've got a grind which brews out correctly when manually brewed.....
Fill and tamp a portafilter, ready. Press and hold 'stop' pad until machine beeps. Tap the pad you want to program. Lock in the portafilter. Press and hold the pad until you get the volume required. Press 'stop' to exit programming, the machine will stop beeping.

It is possible that the water coming into the pump from the mains is obstructed. If you have a water filter, that might need to be replaced. Some of the pumps have a stone filter on them, you will see a huge nut on the inlet side of the pump, that might need to be cleaned. Also check all water lines make sure you have no kinks. Pay attention to the gauge on the machine when the noise is happening if the water dispensing pressure lever should be at about between 3-6 bar when not being used and about 9 when brewing espresso.

Are you installing a new element or do you need to get a new one make sure you get an element gasket as well. Element is on right side of machine. Drain water 14mm plug under boiler. There are 4 wires on element two labeled 3, and one labeled 1, the other labeled 2. Element has 4 coils in two loops, top loop and bottom loop. 1 on top loop 2 on bottom loop the 3's on the other side.

Just turn on the main on/off switch wait about 20-30 min. for the machine to get up to temperature once is ready you can use it.

To make an espresso, put the espresso in the warm portafilter and push the down oce is ready push it back up.

If you need more details, Let me know

Press the stop button and the button you are programing together, then keep them held down until you get your level then release.

It can be many things. If I understand machine start working (pouring water) itself, otherwise not working.
Probably your touch pads is bad, must be replaced. If I now more about problem mighty I can help more.