Hard to say but there is probably a software conflict of some kind. For example, I found that when using Aida for importing temperatures, also running HWINFO or Gigabyte SIV can interfere somehow with the Aquacomputer service. Not sure who is at fault though.....everyone says their program is not the culprit so who knows......
I had the same problem when I used HWINFO to import temperatures as I do with Aida.
So basically if I only use one program at a time all is good, which is nonsense this day and time....
I've read in some international forums that Aida doesn't work well with Aquasutie. But maybe is some kind of problem in the Aquaero Service itself.
Software sensors are very important for me. Aquaero 6 have 8 connections for temperature sensors, that can be filled very quickly if you want to measure the liquid temperature in different points (as in the imput and outputs of two radiators), temperature of some blocks (using metallic tape and the included sensors of Aquaero 6 to paste them in the exterior metallic part of the blocks, never in the face that makes contact with the item cooled) and ambient temperature inside and outside the PC. Software sensors improve the control of the temperatures, and also provide vital data for my system in order to control fan/pump speeds and alarms. I can make it work without software sensors, but it will be less reliable and safe cooling system.
I wish next updates will make "Aquaero Windows Service" more stable and reliable (maybe some kind of "autochek" that the service is running and, if it has stopped without an action of the user, re-activate itself...).