Im sorry you are experiencing this, have you tried making a clean install of the newest iCUE release?
https://help.corsair.com/hc/en-us/articles/360025166712-Perform-a-clean-reinstallation-of-the-Corsair-Utility-Engine-iCUE-
c-attack summarized it very well. In my opinion it is the best way to control fans depending on the coolant temperature instead of CPU temp as the latter spike up and down a lot and so would the fans. The coolant temperature is more stable and will give you a more stable fan curve.
Sounds like either the CPU-block doesnt have contact with the CPU or the pump is not running.
Doublecheck that the block is securely mounted so it has contact with the CPU and check that all cables from the H60 is installed.