The last couple of flight I have been getting sirens going off during climb out. I have been flying this bird since it became available without any issues. Am I doing anything wrong?

 

Thanks

Adib 

Make a video showing off these sounds. Would be much easier to help you work out what they are from then.

If it's a single horn at one pitch, you might be looking at some passengers having problems breathing. What's the Cabin Altitude?

My guess is your cabin altitude hasn't been set correctly.

Bleeds........On

Packs..........Auto

Pressurization system knob.........Auto