Afternoon chaps,
I have also had a problem with a Ctek connected to my Aero. The suppliers have told me to perform a "reset" procedure. Which is to disconnect the charger from the battery, but leave connected to the mains. Hold down the Mode button for 15/20 secs. This resets the units memory. That said, mine still randomly trips into fault at step 5 and then seems to discharge the battery if you don't catch it in time.
