Question about Fujitsu 18RC Air Conditioner

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Condensation from wall unit

Excessive water from the indoor unit at relatively low humidity (68)

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Try making sure the filters are really clean. Blocked filters cause insufficient airflow and the inside coil 'over cools' icing up.

Posted on Sep 19, 2008

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I have the same problem.  Does anyone out there have a solution?

Posted on Aug 14, 2008


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How do I determine whether or not condensate should be dripping from a window ac?

The amount of condensate depends upon the relative humidity of the air. When the humidity is high, the AC unit will create more condensate and when humidity is low less is created. As long as the AC unit is working properly, I would not get overly concerned about it.

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Fujitsu wall mount ac ductless is leaking water from unit. How do i fix it?

This unit - like all A/C units, produces condensatiopn when warm, humid air is passed through the cooling coil. Below the coil is a pan that is designed specifically to catch the condensate (water) droplets, and a drain opening that should have a pipe connected that carries the condensate outside.

You should check outside to make sure the drain pipe is not blocked. Next, check the inside of the indoor portion to make sure there is nothing blocking the drain opening in the pan. It is not unusual for spiders to set up in these cozy areas in the offseason.

You will need to consult the manual (if needed) to learn how to remove the cover for access to the pan. Be sure to unplug the unit / shut off the circuit before beginning any work.

Once you've cleared the line, the condensate should empty outside as it did before. Good luck!

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R22 systems should run a 68# to 70# suction pressue. If you look at the suction guage at 68# that is a 40 deg evaporator coil temp.

Nov 18, 2012 | Ruud Central System Air Conditioner

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Sounds like dripping water when on

Water, or in this case - condensation will be created and drip from the cooling coils inside the unit outdoors, if installed correctly. This is a normal condition. Like a cold glass of water sitting on a table or counter on a hot, muggy day; condensation will form. The amount of condensation forming on the glass - and cooling coils of the A/C - is directly related to the amount of humidity in the air.

Some A/C units have fans that not only force cool air out the front of the unit - but also spray condensate on the condenser coils (the coils that get hot and are visible from the outside) to help cool them down.

If water is dripping indoors - the A/C is tilted inward or drain holes on the bottom edges of the rear (outdoors) are clogged. Adjust the A/C support(s) so that it is tilted back (the bottom rear should be about 1/2" or 10mm lower than the bottom front) and inspect & clear obstructions from the drain holes as needed.

I hope this helps & good luck!

Sep 15, 2011 | Daewoo DWC060CL Wall/Window Air...

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Indoor coils freezing up

You have a low refrigerant (leak) problem or poor airflow due to dirty coils or bad fan motor.
Maybe a combination of all 3.
Check the coils for dirt and lint. Check the fan motor blower wheel for lint on the blades. Check the condensing unit refrrigerant operating pressure. Low side for R22 should be approximately 68 psi, R410 pressure should be approximately 135 psi.

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I have water at the base of my bryan central air unit


Sep 18, 2009 | Heating & Cooling

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Tank full after 5 hrs of use.

The amount of water (condensate) that your unit produces is directly related to the setting you have the unit set to and the relative humidity of the air/

That being said it has been a much more humid summer this year almost everywhere, so I'd venture a guess that your A/C is working very well, based on the extra moisture (condensate) that it is pulling out of the air.

A/C and Dehumidifiers both tend to run longer and produce more condensate when having to deal with excessive humidity. But, that's what these machines were designed to do - extract moisture from the air where they are placed to keep us cool and dry feeling!

Enjoy the cool air and remember, Winter is coming!

Hope you find this Very Helpful and best regards!

Aug 24, 2009 | DeLonghi Pinguino PACL90 Portable Air...

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8 bottle wine cooler unit won't cool

First, see if the fan is actually blowing anything out of it. YOu may have an obstruction. If not that...Generally, there are three reasons that you won't get cooling:
  • The condenser radiating fins on the unit are dirty which won't allow cooling air flow to liquify refrigerant. Clean them.
  • The unit is frozen up inside because of excessive humidity. Defrost the unit by leaving it off and open for a day.
  • The unit is low on refrigerant. Check this by leaving the unit off for one hour. Locate the pipes coming out of the compressor. Turn the unit on. If the larger pipe stays frosted up for more than 15 minutes, you need to get the unit charged.

Jan 04, 2009 | Dryers

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I have a Promac 15000 btu (4 years old), indoor unit (wall unit), model ps150cri. When I turned it on for the first time this year, some water keep on coming out from it inside the house. What might be...

You may have a blocked drain or the filters may need cleaning..

pull the filters out of unit and clean with water.

check if the drain is working you can do this by pouring water into the drain tray if the water does not drain away the drain is blocked.

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1 Answer

Samsung 8000 btu window air conditioner

Air conditioners rely on a difference in pressure between the "high side" and "low side" in order to perform. Of course, a/c's are designed to work in the heat. Having a cooler outdoor temp of 70 degrees probably is not sufficient to maintain adequate head pressure and will result in reduced cooling capacity. Also, since it was 68 in the morning in the room, it is possible that the indoor coil began to freeze up. Basically, you have a cold coil that you keep warm by moving air over it. If the air doesn't have enough specific heat (what your thermometer measures) it can allow the coil to get colder than 32 degrees and the condensate from all of your humidity will begin to freeze on the coil. My recommendation would be to check the a/c on a day that is 80+ degrees. If you have an avarage indoor temp of 70 degrees you should be able to look for the air coming out to be approximately 20-25 degrees colder than the air being sucked in.

Jun 10, 2008 | Heating & Cooling

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