Regular Central Air Conditioner Icing Up.

by Sally
(Utah)

About a week and a half ago, we noticed that our central air conditioner did not seem to be working properly.


We went outside to look at the unit and there was ice forming all over the coils inside the unit and on the tube leading to the house and ice ran down into the unit inside the house.

We changed the air filter and cleaned the coils inside the unit inside of the house and vacuumed around the motor. A repairman came and said that we needed to add more refrigerant. He charged us 330.00 to add the refrigerant and said that our motor was very dirty.

Said he could clean it for 100 more but it did not need to be done any time soon. Air conditioner worked great for a week and a half and then we noticed the same problem. The house did not seem to be cooling off enough and ice was forming again. What do we do now?

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Sep 28, 2015
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Air Conditioner NEW
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Jul 10, 2013
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Ice Build Up on Inside A/C Unit NEW
by: CJ

I am dealing with a similar issue with ice build up on the side of the A/C compressor/coils. This unit sits directly on top of my gas heating unit. I was away a few days and upon my return the air was running hard and the thermostat registered 73 degrees (I left the setting on 80 degrees). Why did the unit keep running? And why didn't the thermostat shut it down when the temp.fell below the set temperature, i.e. 80? This caused a huge water leak in my basement -- the air filter and a laundry rug rug were completely soaked. I shut the unit down but the water is still leaking. Any and all ideas are much appreciated. Thank You.

Aug 13, 2010
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Icing Up Central Ac Unit
by: Dadan

Hey, Sally

Sorry for the late respond. This is regular split central ac unit, right? If the blower outside is having a problems, it shouldn’t freeze up. It should cause the compressor to heat up.

The air flows could cause the central ac unit to freeze up. He should has realize that the first time he arrange at your house?

“thousand dollars worth of cleaning done” What part of the central ac unit is the tech planning to clean? Yes, leak is sometime hard to find and time consuming.

The puddle of water under the furnace is normal and it should be moving outside through your PVC or this kind of pipe.

Regards,

Dadan

Aug 06, 2010
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Central Ac Icing Up
by: Anonymous

So repair man came again. Said that yes there was probably a leak, but that he now thought that the blower outside was having problems. He then said he would top off the refrigerant again. He also changed the schrader valve.

Said that hopefully that fixed it. He also told me that our air flow is bad in the house. I have not noticed this before our current problem.

Said that we need about a thousand dollars worth of cleaning done and even then we might just need to replace the whole thing. I am so very confused.

I guess we will wait and see what happens over the next week and if we have problems again we will get a second opinion. He said that to find a leak would be very hard and very costly. I do not quite understand this.

We have a very small house and all of the work is basically exposed in our basement. I can see where it comes into the house and where everything connects basically.

Why would the leak be so hard to find? Also, the AC is running right now and there is a puddle of water under the furnace? We turned AC off yesterday at first. Why a puddle now?

Aug 06, 2010
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Freon Leaks
by: Dadan

You said, the ac filter, indoor coils was clean and vacuumed. There have to be restriction within the big copper line or leak. I don’t know what is between your compressor and indoor coils.

The leak had to be big enough to remove refrigerant within one week and a half. This big enough leak could occur anywhere within the central ac system.

If the tech charge 330.00 dollar to add a refrigerant, your central ac unit missing a lot of refrigerant, do you know the amount of refrigerant the tech adds? Ex. 3 lb, 4lb…

The only thing you should do is call the technician, who had added the refrigerant. He didn’t fix the problem or a new problem could have occurred.

Not knowing the ending of a story is terrible, so come back here and tell us what happen.

Thanks.

Dadan

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