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Ice in unit and on outside lines - Heating & Cooling

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Hey there, first, check to make sure your filter, fan blades on inside unit, and indoor coil are clean. If they are not, that may be the issue. If not then, defrost the unit (off for a couple of hours), turn it on, if the larger line in black insulation is warmer that 55 (probably like 75) then chances are you are low on refrigerant. If you need to get recharged, make sure the person doing it can find a leak or it is going to be an ongoing issue

Posted on Jun 27, 2009

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Temperature in house want go down. Don't know if it's the therostat or ac unit


Most likely the A/C unit if the house doesnt feel cool. Look on your refrigeration lines and check it for icing up anywhere on the line if you have that shut the unit down immediately. That means your possibly low on freon, dirty filter. If there is no ice on the line check the condenser (outside unit) and see if the air is hot which it should be if its not your compressor might not be kicking on. hope this helps

May 10, 2011 | 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

1. what are reasons why refrigerant compressor burn-out? 2. ice build up on suction line. 3. Insuffecient cooling. 4.Outdoor unit not running, but indoor is operational.


On the split system 1. Can burnout from defect, lightening, etc .. 2. Only way ice will buildup back to outside unit is LOW LOAD.. either from dirty filter, dirty coil or fan blades caked up with dirt. 3.. Poor airflow will cause the poor cooling $ Outdoor unit most likely has a low pressure switch causing the outside unit to shutoff until pressure rises.. Has this helped ?

Sep 03, 2010 | Heating & Cooling

2 Answers

Outside unit iced up how do de-ice


As with the simplest way to thaw ice is with heat.

If you are running this unit in cooling and have ice outside, then you most likely have a freeze up inside as well. If this is a heat pump unit, then frost is normal during operation, however, ice build-up is an indication of a problem.

There are 2 effective ways to remove the ice build-up. The first is the simplest. Get your water hose and hose it down. Be sure to turn off the breakers to the unit and avoid spraying the electrical compartment. If you have the ability to hook the hose into a hot water line, then this process with be extremely fast. Let the unit sit for about 20 minutes to dry out and turn it back on.


The second can be a little more complicated if your not tech savoy. You can turn the system on in the cooling mode. This will make the outdoor coil the condenser section. Then, either block the airflow through the coils with an object, put an object over the fan to increase pressure, or if you can, disconnect the fan so it does not run. This method is essentially the same as a defrost cycle.

As with any failure, you can fix the problem at hand, but it will return. After you get past this, your real challenge will be determining what caused the freeze-up.


If you were running your system in cooling already, then you will need to ensure the system has de-iced on the inside as well.

Jan 12, 2010 | Heating & Cooling

1 Answer

Nordyne AC unit works at first but later provided cool air. Thermostat set to 65. Power running to unit outside. Noticed ice around line outside and can send a picture. Chipped ice away. Want to know what...


If the inside fan motor is running OK you are low on refrigerant. If the inside fan motor is not running, repair the inside fan motor. Could also possibly be dirty inside coils.

Jul 20, 2009 | Heating & Cooling

1 Answer

Ckl60-1l outside fan runs good,compressor do not run


Reasons for icing up are dirty filters,dirty indoor evap coil or low on refrigerant. Check these. Your compressor is probably overheated. Let it go for a couple of hours if you are in a hurry. Run a water hose over it. Rus

Jul 15, 2009 | Goodman CKL60AR60 Air Conditioner

2 Answers

Line to evaporator iced over


I am not exactly sure as to the type of unit you have. If it is a ductless split system (inside unit on the wall, never seen Lennox make one) you could be low on charge, the metering device to drop the refrigerant pressure is in the outdoor unit. If this is a whole house system, you may have a restriction in the outdoor section somewhere. If you look into the unit while it is running, try to find a filterdrier. It is a cylinder soldered into the small line. You can also see exactly where the ice starts, that is where your restriction is. Let me know what you find out.
seth

Jun 26, 2009 | Heating & Cooling

1 Answer

Not blowing cool air on my Ruud, 18 years old, outside unit.


If you have ice on the Line you are iced up. If coil is iced no air can get thru. Now First. Turn of ac and turn fan to on posotion. That will thaw unit. Let it run 45 minutes. That should do it. If the fan is not running you amy have a bad fan relay. One of the reason iced up unit is dirty evap, coil inside. Try to thaw it out first. You can clean the coil with a stool brush. Does not damage the coils. Good luck

Jun 07, 2009 | Ruud UBHC Air Conditioner

1 Answer

The unit outside is getting ice around the line close to where you put refrigerant in. House not as cool as needed.


Freon is low. Sounds counter-intuitive, but the large return line should be cool( even have condensation on it) but never cold enough to freeze.Either use factory pressure settings or add just enough Freon until Ice melts. If unit has a high-side sight glass there should be no bubbles present. Do not overfill.

May 28, 2009 | Whirlwind FH-778 Air Conditioner

1 Answer

The unit is not cooling. have noticed ice on the line in the unit outside.


if one or few pipe may not aproblem may be the thermostat is aet to very low cool anf the fan on low speed or the thermostat is defective also if this icing is growing up means
-1 evaporator need cleaning
- 2 a smll freon leakage

May 04, 2009 | Heating & Cooling

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