Had the same problem (happened after months of error-less working without any changes at the system/aquaero :
). Try this:
Start the aquasuite
Change the settings in whtat you like to have
go to the tab "Profiles" and safe the settings
loaf the new profile into the aquaero and make the settings permament by clicking "safe to eprom" in the meün
This did work on my auquaero (and never happened again till now
)