[E_ri_k (Erik)]

The cooler on my QHY9 was behaving a little strange the other night. First night of imaging it was fine, -35 at 60%-70% power. Next night it was as if it was struggling? Sat at 100% power but only managed to reach -25 or so, and it was freezing outside!

After a little fiddling around, I managed to get around it by setting the cooler to say -6, and watch the cooler power drop quickly to say 50%, while the sensor temp remained quite cold, then set it back to -35 pretty fast. Like fooling it into working?

Tried both DC 201 power supplies and same problem? Any ideas?
Erik