My fan blows a lot of air out on the high setting. Is your AC still cold? If not, it could be an AC issue. If its still cold and the fan speed doesn't respond to higher setting, then it may be the fan or the fan switch. Check the switch first. It could be it's not changing speed because its worn out or not connecting from setting to setting.
The AC is cold but is very low when at max setting. it is not much difference from low to high setting. thanks I will look into switch. Thank You very much, i appreciate your help.