Question about Sharp Air Conditioners

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Hi the outdoor unit turns on ( fan runs) the indoor unit does open, no heat or cold air blowing. In just fan mode the unit works fine etc speed setting ok. Its a sharp split type air model # ae-a244j outdoor,ay-a244j indoor unit what would be the problem, theres only two parts in the outside unit behind the side plate where the wires info is,small black box three wires and a round unit with wires. I hope this is help full cheers andrew

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My gut says that this is evidence of a bad control board(circuit board). As usual, double check that your batteries are good in the thermostat. I have seen some weird things happen when the batteries are low. This one may be a job for your local contractor.

Posted on Jun 23, 2008

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I have a neo plasma lg 7kw will not heat LG Air conditioner


Make sure the setting on the remote is correct . Sun symbol for heating. Make sure the filters are clean. On heating, the indoor unit will 1/2 open the flap but the fan shouldn't start. The outdoor unit should start and if working properly, will be blowing cold air. The indoor unit will open the flap fully and the indoor fan will start once it gets hot then you should feel warm air. If the outdoor unit is blowing warmish air, I would say the reversing valve coil has failed or one of the indoor temp or pipe sensors are faulty. If a sensor fails, a "CH" error should appear on the display.

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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.


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1 Answer

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Hello,
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1 Answer

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1 Answer

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1 Answer

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