Hello!

What about a reset of the A-190 module If you don't know how to: you
must switch the power off, push AND HOLD the four buttons of the A-190
(labeled "Group", "Menu", "Inc./+" and "Dec./-"), turn on the power
and LET THEM HOLD. The LEDs flashes about five seconds slow and then
again about five seconds fast. After then you can release the buttons.
Perhaps this could help...

Best wishes

Robert!