Nvidia RTX 3070 fans out of control

I have a rig with 3 RTX 3080 plus 2 RTX 3070, all cards are non LHR:

The problem is that the GPU 3 fans seem to work full 100%, but hiveos shows 0% even though:

I set autofan Off.
I set manually any % fan speed.
I stop the miner.

The only moment fans are off is when I reboot and the miner does not start yet. But as soon as the rig connects to the pool and starts to mine, fans go to full and then they are impossible to control, neither to stop.

What could it be happening and how to solve it before those fans die?

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