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Sharp Air Conditioner AC09RLCSYS isnt cooling properly. Very moderate to low cold air from unit. At one point small bits of ice came out of indoor unit when on auto cool. Unit was switched off immediately and then turned back on after a few minutes with no additional problems, however still is not cooling properly. Unit is only eight months old. First used for cooling with no problems and great cold air, then for heating during winter. Now back to cooling and not getting the cold air like previously. NB - I have the larger unit (AC18RLCYS), installed the same time as the smaller unit and this is working fine.

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Unit may be freezing up if blowing ice crystals. Let thaw 24hrs try again. Make sure condensation drain line is cleaned out.

Posted on Nov 08, 2010

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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

Tip

Air Conditioner Ice Air Conditioner Problem


If you are experiencing the problems caused when your air conditioner becomes a solid block of ice then you need to figure out the real reason why it does or is doing that.

There are a few things that can happen to cause this unpleasant happening.
  1. The air flow over the coil is choked off to the point where the coil starts to become to cool because not enough air is flowing over it to keep it warm.
    1. Check air filter, if dirty clean it. (This is a very common problem)
    2. Check supply vents in building to make sure enough are opened to allow air flow.
    3. Check blower motor to see that it is operating at full speed.
    4. Return air temperature may be too cool. (below 65F)
    5. The indoor coil it’s self may be plugged with dirt. Clean with a good indoor coil cleaner.

  1. The outdoor air temperature maybe to cool which makes the indoor coil run too cold.
    1. Install a head pressure control to keep the high side pressures up.

  1. The unit may be low in refrigerant. This is often the first thing that gets the blame for causing this problem. Actually it should be the last thing to check after all the other possibilities are thoroughly checked.

If you have a coil that is froze up to a chunk of ice, then you need to remove power to the outdoor unit. Allow the indoor fan/blower to run to try to move air over the coil and thaw it out.
After the coil is completely thawed, then restore power and determine the cause of the freeze up.
A heat gun or hair dryer can assist in the deicing process. Towels and a wet/dry shop vac can help to keep the mess to a minimum also.

on Jan 03, 2010 | Heating & Cooling

1 Answer

12000 btu air conditioner is brand new but ices up when turned on. Presently it is used in an attic room that is 15x15 sq.ft. Any suggestions/solutions?


thins that can cause an a/c to ice up
1 something blocking the return air to the system (dirty filter, something in front of the unit blocking the incoming air )
2 defective thermostat keeps the unit running past the desire temperature system does not cycle off and ice begins to form.
3 low refrigerant charge this causes the unit to run constantly and the room never cools off ice also begins to form.
4 defective blower fan this is will prevent the air from circulating pas coil and ice will form.
I HOPE YOUR SOLUTION IS SIMPLE.. IF THE UNIT IS NEW IT SHOULD BE UNDER WARRANTY GET IT REPLACED THERE IS NO POINT IN GETTING IT REPAIRED IF YOU JUST PURCHASE IT.

BEST OF LUCK

Jun 01, 2011 | Sharp AF-R100BX Air Conditioner

1 Answer

My Haier wondow air conditioner seems to be blowing cold air but it is not cooling the bedroom. It worked great a few nights ago and made the room really cold but now its not cooling.


A few basic principles for air conditioner troubleshooting. For both central home air conditioner or window air conditioner, the first thing to check is whether the unit is getting proper power. If the unit uses 220 volt power be sure that the proper voltage is getting to the unit. Same for 110 volt units. A voltage meter can be used to assure that the voltage is correct.

For window air conditioning units the voltage can also be checked before and after the thermostat. If voltage is being supplied to the thermostat but not from it then the thermostat probably needs replaced. This is a fairly common problem. Another place to check is the fan motor voltage. The fan on window air conditioners runs both the indoor blower and the condenser fan. If that motor fails than the compressor may run for a short time, but will overheat and shut off. Continued operation like this will result in compressor failure. This motor can be economically replaced for larger window air conditioners, but for smaller ones the cost of replacement will be more than a new unit.

Central air conditioners for the home are more complex and there are more things that can go wrong. As with the window air conditioner the thermostat can also be a problem. The central air conditioner thermostat will only have 24 volts going to it. So don't look for high voltage there. Some units the voltage will be coming from the outdoor unit and others the voltage will be supplied by the indoor air handler or furnace. Most home central air conditioning will be supplied by the indoor air handler or the furnace. If the air conditioner is for cooling only the unit will usually have only two wires going to the condenser unit. Make sure that you have 24 volts across those wires.

The next thing to check will be the indoor blower. If your thermostat is calling for cooling then the indoor blower should be running. If there is no air moving across the indoor cooling coil then you will soon have a big block of ice formed on the coil. This can happen for a few reasons. The indoor blower is not working, the air flow is restricted and not allowing air to move across the coil. A clogged air filter would also do this. Or the outdoor condenser unit has lost the charge of refrigerant.

Finally and worst of all is when you have a complete compressor failure. Often when this happens the compressor will "lock up" or not be able to turn when power is supplied to it. Overheating or lack of lubrication are usually the main causes of compressor failure. Overheating can be caused by the outdoor coil around the compressor getting clogged with dirt, leaves, or grass. Loss of the refrigerant charge will also cause the compressor to overheat. It is the cool return gas coming back to the compressor that helps to keep it from overheating.

As you can see there are many things that can go wrong with an air conditioner and I have not come close to exhausting the possibilities here. I have just touched on the most common problems in a very basic way.
There are some basic trouble shooting things that can be done very easily. Most problems are above out of the range of comfort for many homeowners and professional help should be consulted before any attempt is made at repairs. Remember also, that the release of refrigerant gases into the atmosphere is a federal offense in the
US. Proper care must always be taken to minimize the release of any gases. A license is also required to handle refrigerants. Make sure that the professional you call has the proper certifications to handle refrigerants properly.


http://www.fixya.com/support/r3636709-size_air_conditioner_need

http://www.fixya.com/support/r3623253-window_air_conditioners_clean_every_year

http://www.fixya.com/support/r3633369-portable_air_conditioning_great_portable

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http://www.fixya.com/support/r3597468-you_can_add_air_conditioning_to_your_hot

http://www.fixya.com/support/r3583697-how_to_keep_house_cool_without_using_air

May 28, 2011 | Haier Air Conditioner

1 Answer

Poor cooling


cold air is made by refrigeration in the air conditioner. If the unit is low on the freon charge then you have a poor exchange and poor cooling. I have gotten the units to work better by putting a little water on the outside exchange coil. by bringing the temp down on the outside coil you get a better exchange and better cooling. I used a small copper tube with about 10 real small holes in it to drizzel just a little bit of water on the outside part of the machine. the fan cools off the outside coils off and gets a better exchange bringing down the temp of the air coming out of air conditioner

May 01, 2011 | Heating & Cooling

1 Answer

The air conditioner will work for a while but then shut down by itself.


Due to the many different questions I see about Air Conditioning, I am including this overview to help us better understand each other for trouble shooting. A basic air conditioning system has a Thermostat, Air Handler or Furnace Fan and a Condensing unit. In a split system, the condensing unit (Condenser) is separate from the furnace and usually in the back yard. When working properly, it blows hot air. It connects to the cooling part of the system by 2 copper lines. One large line and 1 small line. The part that cools the house is the "Evaporator" and is usually on top of the furnace inside the square metal box (Plenum). When the Air Conditioner is running, the large copper line should be cold and the smaller line should be warm. Common signs of low refrigerant are that both lines are the same temperature and/or frost or ice has built up on the large line at the condenser. The thermostat will normally display room temperature on till it is touched to change the setting. It could have a "Span" setting as well as times and temperatures. The operating "span" of MOST residential thermostats is 40 to 90 degrees. That means you can set it as low as 40 degrees and no higher than 90 degrees. It probably has a fan switch also. When in the "ON" position, the fan will run constantly, 24 / 7, but the condenser will still cycle on and off as needed to keep the house at set point. If you have a suggestion to include in this paragraph, please let me know.

Please read the above paragraph and see if we can narrow the possibilities. How long does it stay off? Does it restart by itself? Does it blow any cold air while running? Thank you. Roger

Apr 11, 2011 | Sharp AF-S100MX Thru-Wall/Window Air...

1 Answer

Sparked and now does not get cold


Hi,<br /> What sparked?? indoor unit or outdoor??<br /> High voltage or low voltage???<span style="FONT-FAMILY: 'Trebuchet MS'; FONT-SIZE: 10pt; mso-ansi-language: EN" lang="EN"> </span><br /> <span style="FONT-FAMILY: 'Trebuchet MS'; FONT-SIZE: 10pt; mso-ansi-language: EN" lang="EN">Here is a tip about troubleshooting your air conditioner...</span><br /> <span style="FONT-FAMILY: 'Trebuchet MS'; FONT-SIZE: 10pt; mso-ansi-language: EN" lang="EN">There are many things that can cause your air conditioner not to cool&hellip;<br /><br /><a href="http://www.fixya.com/support/t4975332-c_run_only_humming_noise_when_turned" target="_blank">Air Conditioner</a> Trouble -Review the <a href="http://www.fixya.com/support/t5003406-compressor_failure_sends_out_hot_air" target="_blank">Possibilities</a> <br /><a href="http://www.fixya.com/support/r3571569-air_conditioner_trouble_review_the_possi" target="_blank">http://www.fixya.com/support/r3571569-air_conditioner_trouble_review_the_possi</a><br /><br />heatman101 <br style="mso-special-character: line-break" /><br style="mso-special-character: line-break" /></span><br />

Aug 26, 2010 | Heating & Cooling

1 Answer

Ice buildup in wall mounted unit


Icing on evaporator is caused by:
Dirty evaporator
Bad cold control
Low charge
Low ambient air temp

May 25, 2010 | LG LS-L1210CL Mini Split Air Conditioner

1 Answer

My unit was'nt cooling the room like it use to and then this morning it was leaking water in the room


Hi, it sounds like the evaporator coil that is located on the inside as built up with ice, and has blocked most of the air flow. What can cause this is a very dirty filter, indoor coil that's iced up, and if the filter and coil are clean, make sure the indoor blower is up to speed. Turn it off and let it defrost. It will take some time. Turn it on fan only. If all is clean and motor is fine and it continues to ice, you are low on freon, and have a small leak causing it to ice up. It is probably a very small leak that may have taken a few years to leak to this point. I would make sure the filter is clean, coil indoors is clean, and blower is up to speed. If this is all good, you will need to get it charged. This unit holds less then 2 pounds of R-22.
Keep me posted on the out come. You can pull the indoor cover and see if you have ice on it. Let me know.
Shastalaker7

Apr 20, 2010 | Cfm Klimaire KSWG009H113 Split System Air...

3 Answers

The inside RUUD AC unit has ice and no cold air is blown


it is likely low on coolant or as some say "freon" that or the indoor fan motor has not run properly. let it thaw completely by shutting it off and just turning on your fan switch from auto to the on positon. if you begin to feel air flow eventually you need coolant added b/c you probably have a leak from the system being old

Sep 13, 2009 | Ruud UBHC Air Conditioner

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