HVAC problem

[Roger1965]

I did a search but didn't find anything like what is going on in my car:

1) No heat unless I put unit in High setting. Then I get full blast heat.
2) No A/C unless I hit snowflake, then I get full cold A/C

In auto mode fan comes on full speed with no heat or ac, regardless of temperature selected.

The way I have been using it is to leave temp at 85 in manual mode, which just gives me fan with no heat or AC. Then if I want heat one click up puts me in high, where I get full heat. One click down from high gets me back to 85, turns off the heat and puts me back in fan mode. If I want AC, I just hit the snowflake.

Also odd is in manual mode the unit says "Manuell' on the display



I have replaced the little sensor fan on the passenger side of the dash but I can't tell if it comes on