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Iced up evaporator - Air Conditioners

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  • hdhog2001 Aug 17, 2008

    Need help trouble shooting a Air conditioning problem. The Evaporator is iced up.


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Usually either low air flow or low charge of freon.there are other causes but they are much more rare.

Posted on Aug 18, 2008

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1 Answer

Air conditioner icing over

Icing is almost always caused by one or both of two situations. Either low airflow due to clogged filter or evaporator and/or or low on refrigerant. If the filter and the evaporator (the radiator looking coil right inside the case) look clean, then the unit probably has a leak and has lost refrigerant.

May 12, 2014 | Air Conditioners

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Air conditioning blower motor work intermitant

Check if the evaporator is icing. When it's blocked with ice, no air will pass through. Dirty evaporator coils is the cause of icing. Have it cleaned.

Nov 12, 2012 | Kia 2008 Sorento LX

1 Answer

Is there supposed to have ice on the lines inside the house on the central air cooling unit?

No there is not supposed to be any ice. The bigger tubing may sweat but not ice over. If it is iced over:
1. check your filter
2. refrigerant may be low
3. the evaporator coil may be stopped up with dirt.

If there is ice on the line, more than likely, the evaporator coil (located above or below your indoor unit) is also iced over causing low air flow through your ductwork. The air coming through the vents may be real cold but there may not be much force. This indicates a stopped up or iced over evaporator coil or a dirty filter. Best thing to do is turn the unit off, let it thaw our for a few hours, change the filter while waiting, and try it again. Hope this helps you. stay cool. mark

Jul 10, 2011 | Intertherm Air Conditioners

1 Answer

My air condition blocks some ice in the system, causing not enough cool provide.

Water leak /Icing in your evaporator is the common problem in split airconditioners.. It happens due to:

1. Air filter block 2. Evaporator coil Block. 3. Less rpm of blower motor. 4.Drain line blocked.

To rectify, service the unit completely. If blower motor less rpm, replacemotor capacitor.

Dec 18, 2010 | Air Conditioners

1 Answer

The freezer side is very cold but in the refrigerator not much cold.

Check evaporator fan inside the freezer
Check condensor fan underneath in back
Check for ice buildup in the evaporator coils (Defrost Problem.)
Also ice and/or frost on the back wall of freezer (defrost problem)
Check air vent for ice block from freezer to refrigerator inside the fridge.
Should have low air volume to fridge from freezer.

If this was helpful please rate me.
Leo Ponder Appliance-Tyler,Texas

Aug 07, 2010 | Air Conditioners

1 Answer

Ice on the evaporator

Make sure the coils are not dirty,if they are not dirty,add freon to the system,not much,feel the evaporator,when the evaporator is cool all over,and the condenser is warm all over,there is enough freon,add very little at a time,this system does not hold much freon,if this was helpful,at all,please rate,thank you.

Jul 06, 2010 | Fedders A6Y12F2D Thru-Wall/Window Air...

2 Answers

Kenmore AC, no cold air

If the evaporator tube is iced up entering the coil and cool to warm leaving the evaporator, that would indicate low on refrigerant or a restriction. If it is iced up entering and leaving the evaporator, then, it could be low on refrigerant,blower not running at proper speed, dirty evaporator coil or filter.
You need to check the suction and head pressure and temperature to determine problem for sure.

Jun 07, 2010 | LG LWHD1200FR Wall/Window Air Conditioner

1 Answer

Evaporator coil continue frosting\build up ice

check the indoor fan motor, the indoor fan motor has to be running while condenser is on. make sure the filter is clean and the return vents are not blocked. Check charge.

Dec 16, 2009 | Carrier Air Conditioners

1 Answer

Formation of ice on evaporator element

hi! there,
eventually ice freezing evaporator occured two factor you have
dirty fin evaporator and undercharge system.
1. undercharge can easily detected using clamp
ammeter clamp on one line of evaporator while running
read the amper the compare this to yuor service
manual the rated current of the compressor.

2.if the reading current is below the rared current on
manual or there is tag on the body of unit specified
rated current.your unit need to recharge.

if has the same current no change at all freon is still
good, this only need cleaning of eveporator fin.

clean this by pressurise water to purge out all debris
particle on fin tube of evaporator.

cracking sound usally made by blwer or fan
misalignement or distorted bearing blower .

regards have anice day dont forget to rate me.

Apr 10, 2009 | LG Air Conditioners

1 Answer

Gold Star window A/C R5207Y3 Evaporator ice buildup

This is njormally an issue with oversizing but this should have manifested itself the 1st time you used it, unless you have relocated the unit. If you have reinstalled it in its original location and if you have cleaned the coils as required, then you have a low freon issue that only a professional should resolve.
Tip: If the ice is building up in 1 small area and not evenly across the complete evaporator coil, then you definitely are low on freon.

Jun 11, 2008 | Air Conditioners

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