chord downs one octave from note A in auto accompaniment

[skbb2003@yahoo.co.in]

Q:-While I play chords by left hand in auto accompaniment, Chords are played from C-G# in a particular octave but from A to B it plays one octave lower than the previous. Suppose C to G# chords are played in C2 octave. But as soon as you play A /Bb /B, it plays / produces the chord in C1 octave. Can you kindly suggest any solution?
I play GW8.
with regards,...