I have two ASI cameras, an ASI 183 MM pro, which I purchased to be able to cool and operate at a fixed temperature. I have an ASI 120 mini as well. When using these, in any software I use (ASI studio, MaximDL, Sharpcap, APT) I see temperature displayed for the sensor in the ASI 120, but no matter what I do with the ASI 183, the temperature remains at 0. I can turn the cooling on, (yes, I have a 12V power supply connected, the red light on the camera glows and the fan spins) and the power consumption will slowly and steadily climb to 100%, but the temperature of the sensor remains stuck at 0. Capturing an image results in the same information in a FITS header as well.