Ive experienced Alfa lava purifier after major overhauling, when purifier is in auto mode, Leakage alarm will come. However when switch over to manual for troubleshooting the bowl opening and closing is normal.
Settings can be changed in the system. The time for operating water being fed, time for closing water feed and time for opening water, also time interval between each sequence. The Method of setting these are all inside the manual.
Ive also experience ships fitted with auto system, but purifier is running in manually because no one knows how to alter the setting.