Air conditioner has to be reset --E1

If your a/c unit is portable,and E1 code most always is "air filter cleaning time" or" water level to high ".
To reset air filter interval turn unit off at power switch then unplug.Hold power switch down while plugging in....unit will go through a short self check then beep.Release power button after beep.Unit should now be reset.
To reset water level....just drain some.....not all.
Most portables use water for increase cooling......so leave some in.