Question about Fujitsu 12C1 Air Conditioner

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Iced up when first start up

Filters are clean, air coming from unit not very cold unit model fujitsu18cl

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Did the large copper line have frost on it? if so then either

1.) low refrigerant gas level. If the freon levels are low the unit will start but after about 20min the unit will freeze up
2.) do you have acess to any refrigeration tools guages ect??? I can pace u through checkout...

Posted on May 04, 2010

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Posted on Jan 02, 2017

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Front grill


Check the air filter and if it is dirty, replace..
Turn equipment off and let the ice melt.
After ice melts, place a/c in cooling mode and set the thermostat to 3 degrees below room temp display.

The indoor unit fan should start blowing cold air immediately and then turn off once the room temp drops one degree below the cooling temp setting.
If the indoor unit does cycle off, check the outdoor unit and make sure it turns off at the same time.
If the outdoor unit continues to run and the indoor fan is not running, the indoor unit will ice up.
A defective compressor relay that is stuck in a closed position will cause icing of the indoor unit because it keeps the compressor running when it should turn off with the indoor fan.

Do you have an error code being displayed on the controller?
Is there an led light that is flashing on the indoor unit?

Another possibility causing the indoor unit to ice up is if the freon in the system starts to get low.
Make sure the ice has all melted for this next check.
Pretty easy to check without special tools.
If the air filter is clean and there is no dust/ dirt blocking the fins on the indoor unit, turn a/c back on to cool and check that the indoor unit fan comes on and is blowing air good.
Once everything seems to running good go to the outdoor unit.
There will be two lines with black rubber insulation covering them.
Peel back the insulation three inches on each line and observe the copper lines.
If either line starts to frost up the a/c system is most likely low on refrigerant.


Another cause of indoor unit icing could be that the aluminum fins behind the air filter are clogged with dust or other foreign material.
This would block the air that must be pulled in causing the indoor unit coil to become too cold due to lack of air flow and it will ice up.

Operating the cooling system when the outdoor temperature is below 60 degrees can cause the indoor unit to ice up also.

I'm Robert.
Florida certified a/c contractor. 30 years experience.
Hope this helps.


Mar 18, 2014 | Fujitsu Heating & Cooling

1 Answer

After around an hour or so it starts to ice up and stops blowing cold


The problem you're having is generally caused by 2 things:

1. The air intake filter needs to be removed and cleaned.
2. Overly high humidity in your area.

Keeping the filter clean, will help the unit to move more air and slow the freezing process down, to where it will only be frost. Which is normal.

If the unit has not thawed, wait until it does before removing the filter to clean it. Be sure to turn the unit OFF & unplug it, before removing the filter.

Hope this helps you & thanks for choosing FixYa.

Jul 27, 2011 | LG Electronic Window Air Conditioner

1 Answer

The top and bottom coils ice up and there is no cold air. i'm not sure of the model #. what causes that and how to fix it?


Hello, the coil will freeze either due to low airflow or a low refrigerant charge. Many times a dirty air filter or dirty evaporator coil will cause ice to form and cleaning both will fix the problem, however if the unit appears clean then a low refrigerant charge is the problem and the unit will need to be recharged.

Jul 07, 2011 | Haier ESA3109 WallWindow Air Conditioner

2 Answers

Esco Oasis 2700L dehumidifier ices up. Is there a filter to be cleaned and if so, how to I get to it?


Hi,

The most common cause of frost and ice buildup on a dehumidifier is because the unit is operating in temperatures that are too cold. Many dehumidifiers are not equipped to run at temperatures below 65 degrees Fahrenheit.
To fix this problem, Position the dehumidifier in an area where there is at least one foot of clearance around the unit in order to allow for proper air circulation during its operation. Close all windows, doors and other outside openings to make sure your unit isn't attempting to remove moisture from areas outside of the immediate room. Determine the temperature of the room by checking a nearby thermostat or by using a hand-held thermometer.

Check the filter for dirt and buildup. Unplug the unit from the electrical source and check the filter by opening the filter compartment. If the filter is dirty, it will restrict airflow through the unit and lead to freezing. Soleus recommends lightly vacuuming the surface of the filter to remove dirt. The filter also can be washed in warm water if it is extremely dirty. Once clean, place the filter back in its compartment. Allow for the ice to melt and then restart your dehumidifier.





Jul 03, 2011 | Dehumidifiers

2 Answers

My central air unit comes on but it's not cool and


to me it sounds like filter are dirty, need to be cleaned or replaced, home systems, packaged or otherwise are hermetically sealed and should not need freon recharge. Always start with airflow and/or unit being set too low. An AC unit of any type will build ice if a) the filter is plugged up and can't move enough air, b) it has been run without the filter, clogging the coil, again, not moving enough air, c) setting an AC unit below 68 degrees F will almost ALWAYS cause icing, and d) running a standard AC when it's warm inside and cold outside (unless equipped for "low-ambient operation"). When in doubt, a bit of maintenance(thorough cleaning) by someone with AC skills can cure a b, common sense will cure c d.

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Jun 23, 2011 | Goodman CKL42AR42 Air Conditioner

1 Answer

Cooling fins surrounding coils are freezing and


mcdevito75 here, Possibly, the filter needs cleaning / replacement, unit set to too cold. Shut A/C off, let the ice melt on it"s own DO NOT REMOVE ICE YOURSELF, those coils have the fren gas in them, when the ice is all melted restart unit, set temp. not so cold, around 60--65 degrees, and have exhaust to out. This shpoul;d help, you can always check with your local A/C repair shop, they come to the house.

Jun 25, 2010 | LG Electronic Window Air Conditioner

2 Answers

1.5 ton ac. It is getting cold near the outlet but cold air is not blowing out. Instead pieces of ice are sometimes coming out. How to troubleshoot?


Is the fan running? If the fan is running you should check your filter. If it isn't running then you should check the capacitor for the fan and the fan motor. Also make sure the evaporator coil is clean. If all of this is good then get the refrigerant charge checked.

Jun 06, 2010 | Samsung AW0503B Air Conditioner

1 Answer

Ice forming on inside of unit air not cold


clean the filters and check the drain, to clear the drain run a jug of warm water down the pipe

Aug 19, 2009 | Dometic Rooftop RV Air Conditioner

1 Answer

A/C NOT TURNING ON & T-STAT IS SET AT SET POINT


it will take some times depends on ambient temp
but the probleme is to avoid freezing
-1 clean the a/c mainly (evaporator) clean air filter
-2 check and set your thermostat
if not cheak for leak of freon and recharge

May 04, 2009 | Heating & Cooling

2 Answers

Loud whistle noise kelvinator split KSR25F-01


It may be the small vent fan motor on the inside if the control panel. When the noise begins remove the panel and you may be able to catch it in the act.

Dec 27, 2007 | Carrier 36KCARMS Air Conditioner

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