Sounds like it's frozen up. Turn the unit off, pull the filter out. Probably gonna find a block of ice. Hair dryer or heat gun and thaw that ***** out. Should get you through the night... They ususally freeze when they are low on freon (which is kinda the opposite of what you would think). Have someone re-charge your system tomorrow. Turn it off during the day while you're not there to help it stay thawed out.