Hi QHY600 fans on linux (Ubuntu 22.04)

I start capturing reference images.
I cool the camera down to -10 degrees and it stabilized there. Cooling power is about 65%
If I take lights, temperature stays constant at -10
If I take a bias frame with 0,001s exposure time, temperature rises continuously but cooler power goes to 100%.
This behavior is observable in any SDK

Any ideas why this happens ? Currently I'm not able to gather bias frames

Michel

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