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The coil is full of ice

My set is split unit.....when i on it at night until morning arond 8 hour...my indoor coil is all ice and all the is coming out from the blower.

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Is your filter dirty... is the blower running ... is the refrigerant charge correct

Posted on May 31, 2009

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1 Answer

Stops after 30 minutes


The thermostat should run at the temperature desired for as long as your setting. If it cuts out early, then in some cases the humidity is causing ICEING (Ice buildup on the coils) and needs to sit for a time until it melts off. A manual override will keep the device in operation, but the cooling is usually the air crossing over the iced coils and entering the house. Factory service will locate the problem.

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Make sure the indoor filters are clean. The outside unit will continue to run until the indoor reaches the temperature you have selected. Dirty filters can throw the temperature out. Its common for outdoor units to freeze up when on heating mode if the ambient air temperature is below 5 degrees Celcius.. The machine should however, defrost itself. There could be a problem with one of the pipe or air sensors on the outdoor unit.

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Split AC whole unit turnig off at each compressor start up!


Dirty coil wash outside unit with water and change indoor unit filter

Jun 08, 2017 | Heating & Cooling

1 Answer

The line coming into my indoor unit gets iced up. The ice extends the length of the line out to where in connects to the outside unit.


Icing in door due to 1. Less rpm of indoor fan motor (Replace capacitor or motor). 2. Indoor coil and blower wheel, filter dust blocked. (Service the unit). 3. Short of gas. ( Find for leak and arrest. Then vacumise and do gas charging)

Dec 24, 2010 | LG LS122CE Split System Air Conditioner

1 Answer

Spits out water from the indoor unit


indoor coil icing up .gas leak the water is from the dripping coil . or you have left unit on for to long on a low setting

Nov 10, 2010 | Cfm Daikin R410a Split System Air...

1 Answer

Our SRK40H-s1 keeps icing up,


Hi, if you are running this in cool when the icing occurs, there are several things that will cause this. #1, make sure the indoor fan is running up to full speed. #2, make sure that the indoor coil where the air comes in is clean and that the filter media is also clean and not clogged with dirt. The reason I asked if you were running it in cool when this happens is if this were a heat-pump and you were running it in heat, the ice would build up on the outdoor unit and you would have a defrost problem, so just forget that unless this is happening. If fan is running up to speed good and strong, the filter behind the cover on the indoor unit is clean and not clogged and the coil behind the indoor unit is clean, you will have a freon leak somewhere in the unit. Check what I have told you first. Use a ladder if you need to reach the indoor unit. Make sure all is clean and if the foam type filter is old and rotten, you can get some at a hardware store, like Home Depot, Ace Hardware, and so forth. If it continues to ice up, you do have a small freon leak and this will take a certified service tech to locate leak and recharge the system. Most leaks occur on these ductless splits at the freon lines where the lines screw together at the indoor coil to the outdoor unit. I have seen this happen many times as a A/C Refrigeration contractor. You do have a top of the line system I have to say, very little calls to make repairs on the Mitsubishi split system. Lets hope its just a coil or filter that is plugged up not letting air through the coil which will ice up the unit. Keep me posted and feel free to correct me if I was wrong about the way the unit is set up.Also, keep me posted on what you have found and if you have or have not solved the problem. Please get back to me.
Sincerely,
Shastalaker7

May 11, 2010 | Mitsubishi MSZ09UN 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...

1 Answer

My mini split turns on but is not cooling. It comes and goes... sometimes it cools, and the majority of time it doesnt. Plus, is leaking water. I live in an island and is hot! I need help!


With out looking at it, I can give you some ideas that could cause these problems. I need to know where the water is coming from? If it is leaking on the inside, this narrows it down some. It sounds to me that the evap. coil is icing up which the unit could be low on freon, you're indoor fan motor may not be running up to speed, a dirty filter or evap. coil. You need to shut the unit off, maybe through the night. Get a latter and remove the cover on the indoor unit. Check and wash the foam filter and look the coil over for excess dirt build up. Leave the cover off for now, and go outside to the outdoor unit. Have someone turn the t-stat to on. Watch and make sure that the outdoor fan stays on and listen very close to see if you can hear the compressor running. It sounds to me that one of the named items I have listed is causing the evap. coil indoors to ice up and blocking the air flow to you're home. Let it run with the cover off and just watch it for a few hours. If it starts to ice up and the filter is removed with cover, and the indoor fan is also blowing air, more than likely, you have a small freon leak which is causing the problem. If I were there, I would know in a few min. what the problem is. As far as the leak, it is the ice melting off and running over and the condesate line may have a partial plug in it. If it is low on freon, you can go outside and put your hand on the larger copper line to see if it is warm. It should be sweating or condesating if it is charged properly. If warm or barely cool, more than likely it needs a charge and leak check.

Oct 28, 2009 | LG LS-L1210CL Mini Split Air Conditioner

1 Answer

Ice formation in the indoor unit


you need to have the unit checked for the amount of freon in the system this must be done with a gauge set the freon amount is obviously incorrect
also the a-frame evaporator must be sealed in the furnace cabinet

May 28, 2009 | LG Heat cool Window Air Conditioner

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