I recently purchased a new air conditioner that was slinging water from the condenser fan, onto the siding of my building, causing a mess.

I placed some gauze carefully in the back of the unit, and it acted as a wick, removing excess water on humid days.

The design of these units, is to collect water in the hot condenser coil, and have the fan sling water into the coil, improving subcooling.

When the weather is humid, the condensation is collecting faster than it can be evaporated by the hot condenser, so it gets kicked out by the slinger ring in the fan.

I only use this method, because my apartment complex was not thrilled with having to pressure clean the wall recently.

hope this helps you out in some way.