Reply To: Program change from drummachine change to wrong preset.

[gkellum]

Well, there's a MIDI program change receive map that maps a particular program change message to the preset that should be loaded.  The first thing I'd check is whether that's set-up correctly…  It sounds like PrgmChg 1 is mapped to preset 21.  You can find that in H9 Control under Pedal / MIDI Settings / Program Change Receive Map.