I wonder if anybody with the Kawai NV5 uses the sounds which are called "Program Change Number List" in the manual. For example my daughter would like to hear the "Horse Gallop." I have asked the dealer and they do not know - is this sound feature part of something else that I have to rig up ?
As others have noted, the sounds listed in the Program Change Number List in the back of the owner's manual are intended for General MIDI playback (either loading a file via USB, or sending MIDI data to the instrument), and cannot be selected directly from the panel.
However, it should be possible to transmit the correct program change number to the instrument in order to select the sound, and then play it from the instrument's keyboard. This can be achieved by using MIDI tools running on a PC or Mac, or even an app running on your phone or tablet. The NV5 features Bluetooth MIDI, so the mobile route might be the most convenient. I haven't tried it myself, but the MidiPad app for iOS should be able to do this.
Whether or not the "Horse Gallop" sound will be enjoyable enough to make this a worthwhile exercise, is perhaps another topic,however...
I hope this helps.