The air conditioner is cooling but it is dripping water on the floor, lots of it, I mopped up more than a gallon for less than 24 hours use.

The DeLonghi PACA120E Portable Air Conditioner quickly cools rooms up to 400 square feet and comes equipped with several functions that make operation easy and low maintenance. Its 3 operating modes are supplemented with no-drip technology, an adjustable thermostat, 24-hour timer, and much more. This unit truly takes the work out of cooling medium- to large-sized spaces. Multiple Modes and Functions The DeLonghi A120E-also known as the Delonghi Pinguino PAC A120E-offers 3 operating modes and 3 additional operating functions that make this model versatile and energy efficient. Cool Mode: 12,000 BTUs of cooling power help cool large rooms, offices, or basements. Dry Mode: Reduce room humidity by removing excess moisture from the air. Fan Mode: Circulate air to keep your room comfortable without using a lot of energy. Low, medium, high, and an auto-speed are all included (auto speed selects a fan speed for you). Smart Function: Your AC uses Cool and Fan mode based on ambient room temperature. This function will also select your fan speed and keeps your room comfortable without wasting energy. Sleep Function: Using a low fan speed, the AC gradually reduces operation so your room remains comfortable but the AC runs more quietly and efficiently while you sleep. Boost Function: This function is ideal for the summer months and uses the maximum fan speed to rapidly reduce your room temperature. Useful Features Using DeLonghi's patented no-drip technology, this unit is "dripless" under normal conditions, meaning the AC will discharge all of the moisture collected from the air-so you typically won't have to worry about draining the water. When dehumidifying a lot of moisture in Dry mode, excess water may collect in the internal collection tank. Once the tank is full, the air conditioner will automatically turn off to avoid overflow damage. You can also use the included continuous drain hose as a no-fuss way to eliminate excess water as needed. An adjustable thermostat provides additional convenience by allowing you to set your room temperature. The DeLonghi portable AC will cycle on and off to eliminate over-cooling and maintain the set temperature. Additional Features Washable Air Filter: A washable air filter helps remove allergens and other particles from incoming air and saves you money on replacement filters. Quiet Operation: High efficiency compressor and components result in quiet performance. Electronic Controls: The LCD screen displays the timer and temperature settings, while intuitive indicator lights accompany each operating mode. 24-Hour Timer: This feature lets you program your AC to turn on or off up to 24 hours in advance, so it only runs when needed. Window Bracket: Double window bracket is included with purchase for flexible installation. Self-Diagnosis System: The unit includes a self-diagnostic maintenance system that identifies malfunctions should they occur. Remote Control: Use the full-featured remote control to change modes, set the timer, and select a fan speed up to 23 feet away from the receiver (on the front of the unit). Portability: Easy-roll casters and dual carrying handles make it simple to move this model from space to space.

I figured out the problem. My Amcor portable started leaking after the fill light came on for the first time in years. After doing some research I saw that it uses the water to cool some other part of the system to evaporate out the exhaust. So I took the ******* apart and messed with things. Finally I started pouring water into different trays and noticed it would not drain down from the top tray even when running. So I removed the top part and found the drain hole. Blasted that sum ***** with some compressed air and WAMMO it works again.

-madmanmarz

If it's a car air conditioner, your condensate drain line is clogged. If it's a home window unit, it needs to be tilted outward more. The downward tilt should be no less than 1/4" per foot. If your unit is 18" from the window to the back of the unit, the back should be 3/8" lower that at the window....minimum.

Hi

These units rely on air being transferred from the freezer to the fridge, so to make sure that the air ways are clear follow the steps below.
1. Empty the fridge and freezer and store the food elsewhere.
2. Switch off and unplug the unit and leave for 24 to 36 hours with the doors held slightly open. You may get quite a lot of water on the floor, you just need to mop it up, this is normal.
3. Wipe out the inside of both sides to leave them clean and dry.
4. Plug in and switch on, wait around 4 hours.
5. Re stock the unit it should be OK.

If there is still a problem please come back to me

Regards

Gordon

Two issues are possible.
First of all check for dirt accumulation that is blocking the water to drip but is diverting to the front panel section to flow into the wall.
Secondly the A/C must be mounted with a slight tilt thereby making the water condensation to flow/drop into the tray. If not you can remove and make a small wedge on the mounting to tilt.
Also use a good air jet or a water jet( if taken out) to clean the coils.

You have a clogged condensate trap and or line

The outside setting is for bringing in the out side air,the closed keeps the air from the ac circulating and closes outside air off.The unit needs to be remove and took out side and cleaned out with a water hose,dirt and debris is keeping it from dripping out side,

Probably the drain is clogh (it's a p.v.c. pipe , or could be a 3/4 or 1" hose comming out of the inside unit) , to clear the drain , the best thing is to blow air pressure thruogh it , and keep it clean by pouring about a cup of bleach every 3/4 months.

Your aircon probably needs refrigerant recharge.

• if the door was not closed correctly for a while then a lot of condensation will be accumulated on the freezer coils. 
• then when going into defrost it melts this ice/frost and overflows the pan or container under the machine which relies on evaporation to dispel  of the water.
  
• empty the pan under the refrigerator if you can, then give it another day, it will get back to normal.

if you already checked this and think it is a different problem then let me know, i will help you figure it out. 
Mike