Hi, I have a question regarding the fenix a320. 
So when I start a flight and I turn on the autopilot, the flight plan on the navigation display is a dotted line instead with of a continuous one. Because of that the autopilot isn’t able to take any turn by itself and it requires me to change the heading. Why does it do that and how can I fix it?

Here is a video:

 

I'd need to see the MCDU, but I'll assume you hit TEMP Insert on the flight plan page.

However, you have a heading selected of 206. The auto pilot will fly that heading. You need to push that knob in so you get the "dash dash dash dot" to indicate managed mode for heading. That basically arms the LNAV.

^ This. And if you're not currently on an intercept course to the managed plan then you might need to do a 'direct to' as well.

Edited June 26, 20232 yr by ConstVoid
typo

Yeah, I tried a direct to the next waypoint and that seemed to fix it. But now another problem occurred. The speed stopped increasing for some reason and I can’t get past 205 knots. It’s always that or lower. The autothrottle isn’t helping and because the speed is to low the autopilot disengaged.

look:

 

 

also my center fuel tank control button says ,, fault’’ on it.

At 34,000 feet...why are you still using knots instead of MACH?

2 minutes ago, charliearon said:

At 34,000 feet...why are you still using knots instead of MACH?

Even if I use Mach, the speed still isn’t increasing.

Unless you get a command from ATC, everything in the Airubuses (Airbeese) should be in managed mode. If you see a value for heading or speed instead of the "dash dash dot" you are telling the airplane to use that speed.

Also, same kinda with the alt. If there is the dot after the value, the plane will manage getting to that altitude. If there isn't you will need to set the vspeed to get there.

So, as with my comments on your heading, the plane is doing exactly what you are telling it to do.

The way I learned it was "push the knob in to have the airplane control it/ Pull it towards me (out) to have me manage it.

20 minutes ago, Hyper14 said:

Yeah, I tried a direct to the next waypoint and that seemed to fix it. But now another problem occurred. The speed stopped increasing for some reason and I can’t get past 205 knots. It’s always that or lower. The autothrottle isn’t helping and because the speed is to low the autopilot disengaged.

look:

 

 

also my center fuel tank control button says ,, fault’’ on it.

It is hard to see, but likely your throttle is not in the clb detent?  So it is limiting what the auto throttle can do.  In automatic flight in the Airbus, you put the throttle in flex or toga to take off, decrease it to the clb detent shortly after takeoff, and leave it there until you are landing.  

10 minutes ago, charliearon said:

At 34,000 feet...why are you still using knots instead of MACH?

He’s learning, most likely.  Which we all have done at one point or another. 🙂

4 minutes ago, ShawnG said:

He’s learning, most likely.  Which we all have done at one point or another. 🙂

Yeah, I am quite new to this:)

14 minutes ago, BrammyH said:

Unless you get a command from ATC, everything in the Airubuses (Airbeese) should be in managed mode. If you see a value for heading or speed instead of the "dash dash dot" you are telling the airplane to use that speed.

Also, same kinda with the alt. If there is the dot after the value, the plane will manage getting to that altitude. If there isn't you will need to set the vspeed to get there.

So, as with my comments on your heading, the plane is doing exactly what you are telling it to do.

The way I learned it was "push the knob in to have the airplane control it/ Pull it towards me (out) to have me manage it.

Thanks, that’s really helpful, I finally managed to get the speed to increase, but I am not able to get the heading in to managed mode. How do I do that?

5 minutes ago, Hyper14 said:

Thanks, that’s really helpful, I finally managed to get the speed to increase, but I am not able to get the heading in to managed mode. How do I do that?

I posted a tutorial on the MCDU, sounds like you need to watch it and learn how to fly the A 320. 

4 minutes ago, Hyper14 said:

but I am not able to get the heading in to managed mode. How do I do that?

Most likely becasue you are not on a course to intercept the programmed flight path. For instance, if the flight plan says "go from AAAA to BBBB" and you have passed AAAA, but are on a parallel heading, you can't just hit managed heading. You either need to turn the heading knob until the projected heading intercepts the FP, or you need to do a Direc to, and then once it's on its way set it to managed.

This guy has some of the best A320 tutorials out there: 

 

27 minutes ago, BrammyH said:

Most likely becasue you are not on a course to intercept the programmed flight path. For instance, if the flight plan says "go from AAAA to BBBB" and you have passed AAAA, but are on a parallel heading, you can't just hit managed heading. You either need to turn the heading knob until the projected heading intercepts the FP, or you need to do a Direc to, and then once it's on its way set it to managed.

This guy has some of the best A320 tutorials out there: 

Ohh it all makes sense now. 
One more question, if I keep the speed in managed mode, will the plane aver go overspeed?

Edited June 26, 20232 yr by Ray Proudfoot
Embedded video removed.

38 minutes ago, Hyper14 said:

One more question, if I keep the speed in managed mode, will the plane aver go overspeed?

Yes. If your descent angle is steep, or too fast you, will go over speed. Same with applying flaps at the wrong speed.