The cool part of it works great, no complaints. During the process of cooling, some water will be extracted from the air into the unit. I found a plug on the floor tht had come out of the air conditoner where the water was leaking. Delonghi portable air conditioner troubleshooting The instructions for apparatus contain a detailed description of functions, usage modes, as well as the Delonghi portable air conditioner troubleshooting system, ac unit helping to cope with small hitches and significantly accelerate diagnostics and repairs. It does the job cooling the room, the problem is that the drain pip from the back continually puts out water. My portable air conditioner is filling up with water? This is a feature not found in most Portable Air Conditioners. I recently purchased a used portable air conditioning unit (Tili TM09vr), set it up and got it up and running. I have a portable air conditioner in my bedroom that I run at night. It’s one of the hottest days of summer. If you saw any amount of frost on the interior of your portable air conditioner when you removed the filter, you should keep your air conditioner off and let it defrost. I noticed the carpet around my air conditioner was sopping wet. This prevents air flow. Window and central air conditioners work basically the same way. If the unit is operated in VERY HUMID air, water … Wipe out any excess water with a rag. Keep reading to learn more about why your air conditioner is spitting out water and what you can do to fix it. But now i'm trying to use the heat mode and it seems to fill up with water in 30 minutes. Air is taken in from around the unit, and a fan inside the air conditioner blows the air … Most of this water is used to cool the unit and make it run more efficiently. The other night I had I empty it for the first time and now every time I try to use it, it says I have to empty the water. I ve had it for a few years now and have never had to empty the water. You come home from a long day at work to discover that your air conditioner isn’t working properly.You inspect your A/C unit and find that the drain pan your unit sits in is completely full of water. I bought a Hisense Portable Air Conditioner, model # AP1319HR1G. I have a pie tin underneath and it fills up twice an hour. When water doesn't drain properly from a portable air conditioner, it builds up and can freeze around the coils. How Air Conditioners Work. This has a 4 modes, cool, fan, dry, & heat.