I'm using a ZWO EAF (firmware 3.3.7) and it was working perfectly until I did an EKOS/Kstars update. I'm using Kstars 3.6.6 stable, stellarmate 2.6.5 and ekos 1.7.8.
Issue is whenever I hit the autofocus button, it tells me two things and the focuser beeps once :
[ERROR] Failed to read temperature. Error: 4
[ERROR] Failed to read position. Error: 4
Thank you! Turns out I found the issue and it's not related to the EAF. My dew heater was causing the EAF to not move, not sure why but I unplugged it and everything works fine