I have a 2022 International LT 625 with a Cummins X 15 motor.
The issue I’m having is that all of a sudden, the in cab heat stopped working. I’m barely getting any response from turning the fan on and the system is not blowing hot air, even turned all the way up. I’m not entirely sure what is going on here, but its getting to be a bit of an issue.
My bunk heater works just fine, but that doesn’t help me when I’m driving.
does anyone have any advice or experience with a similar issue?

