My cabin heater officially has a mind of its own. Windows were all steamed up so i turned the fan to max as it was on auto and blowing at a 'medium' speed and pressed the screen vent selector.
Fan speed didn't increase when set to max, so turned to it min (one orange dot) fan speed still didn't change. Pressed auto and it dropped to its usual minimum/off setting. Manually selected max again and this time it worked! Changing to min also worked.
It's completely woof woof barking mad.
If it was a computer I'd re-flash the firmware
but it's a land rover so I'll just put up and call it a feature