for example "Wobble 1" or 10047..

I bet you have the "Arpeggio" -> "Common" (touchscreen menu), "Key Mode" (parameter) set to "Sort".

To fix this, change the "Key Mode" to "direct".

Arpeggios traditionally come from a world where the arpeggio is controlling notes. When you press a note on the keyboard - this will "trigger" an arpeggio. In traditional usage - when you trigger the arpeggio - you'll hear the keyboard playing some pattern which follows the arpeggio programming and the keyboard is playing notes - and not you "playing" the keyboard.

The "sort" and "thru" KEY MODEs are built for note data. The "Thru" type is built for controller data where the arpeggio turns knobs, but doesn't deal with notes. What this does is allows for YOU to play the notes and the trigger will just start the controller movement. If you have the mode set to "sort" or "thru" - which FILTER out the notes you play on the keyboard (because these modes are built for the arpeggiator to play notes) -- then you will hear no notes when using an arpeggio that does not have any note movement such as controller-only arps.

For more information, see: http://www.yamahasynth.com/blog/arpeggiator-key-modes

From the page:

If you are working with the Arpeggiators you need to know about KEY MODES, here's the fundamentals...

There are several different "Key Modes" for the arpeggiator. Each has a different reaction to when you trigger notes. It will be important for you to get this point clear in order to understand how an arpeggio works:

Settings: sort, thru, direct, sort+direct, thru+direct

sort
-----
When you play specific notes (for example, the notes of a chord), the same sequence plays, no matter what order you play the notes. The "trigger notes" are not heard, only the output of the arpeggiator phrase.

thru
-----
When you play specific notes (for example, the notes of a chord), the resulting sequence differs depending on the order of the notes. The "trigger notes" are not heard, only the output of the arpeggiator phrase.

direct
--------
Note events of the Arpeggio sequence do not play; only the notes you play on the keyboard are heard. When the Arpeggio plays back, the events such as Pan and Brightness are applied to the sound of your keyboard performance. Use this setting when the Arpeggio types includes non-note data or when the Category type "Ctrl" (Controller) is selected.

sort+direct
---------------
The Arpeggio is played back according to the "sort" setting here, and the note pressed is also sounded.

thru+direct
---------------
The Arpeggio is played back according to the "thru" setting here, and the note pressed is also sounded.

The "Sort+Direct" and "Thru+Direct" KEY MODE types allow both the "direct" trigger notes to pass, and the sorted or thru'd notes that are generated by the arpeggio pattern to pass. Because of Velocity Limits to the Elements and precise Velocity values in the arpeggio data - these are used to create the feel of a Performance in VOICE mode. This is why these Voices (found in PRESET 7 'Musical Effect' Category) are so rich and complex. In order to record Voices that contain these two unique combination Key Modes, you must use separate Tracks for each type of data... the sustained/held (pad) sound data to a separate track from the sorted (arpeggiated) sound data.

Arg. No edit feature. Correction:

The "Thru" type is built for controller data where the arpeggio turns knobs,

should be

The "Direct" type is built for controller data where the arpeggio turns knobs,

hey thanks Jason.. that worked!