Hey I have a case 235 excavator that I have next to no cabin air flow the diverter flap knocks when i turn it on and then when it stops the fan turns on and the dude sitting down flashes on the screen and it only let's it stay on high for a min or 2 and won't let me change air flow to different ports
Just noticed as well the at 68F the fan will go to high but at 67F and lower it drops to 2 bars
Found out this might be because the door was open