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This is a 3 1/2 Ton unit that is low on R22 but still does cool enough to freeze up. The A/C tech insists that it needs over 4lbs of freon, does this seem right to you?

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Hello TF YES to make ice on low freon you lost more than 1/2 of the factory/system charge.4 lbs is about rite.I would like to find the freon leak as you will always have to replace the gas every now & again untill found & repaired.

Posted on Aug 03, 2010

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No it should only need a small amount of freon to bring it out of the freeze line but a dirty filter or evap coil or a malfuntioning evap fan will cause the same problem.

Posted on May 29, 2013

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1 Answer

How much R22 should my unit hold when fully charged


If it has enough freon to freeze up then its not that low. Normally a 4-5 ton cooling only (non heatpump) will hold 7-9 lbs r-22 or 9-11 r-410a. Freezing can be caused by dirty air entering side of the coil also. Or slow blower

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Where can I find the specs for an earlier Goodman heat pump?


You say 2 to 3 years... I'm assuming the unit is older than that. Especially being r22. What about the first 10 years??? Normally you will get 400 to 500 sqft per ton of cooling, but, that depends on heat load calculations. If the unit wasn't big enough you would have had this issue 10 years ago, not when the system kept running low on refrigerant. At first guess I would say a 2 ton unit is not big enough but if it worked fine for 10 years...wuth all that in mind, if it were me, (a seasoned professional) I would spend 1800 to fix my 15 year old r22 unit before I spent $4000 on a new r410a piece of junk. Best Wishes!!

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I i`ve got a haier split type air conditionner model HSU12XCA on R22 gaz which barely cools and freezes after a while. The suction pressure is at 120 PSI and it is freezing on the liquide line. I`ve clean...


Hi,
The unit has a leak and is low on freon...
Here is a tip about troubleshooting your air conditioner...
There are many things that can cause your air conditioner not to cool...

AirConditioner Trouble - Review the Possibilities

heatman101

Jul 12, 2011 | Haier HSU12XCA Cooling Only Mini Split Air...

1 Answer

Line from compressor to house is frozen


Hi!!

The Low Pressure or Suction line (the Fatter line) usually freezes when the system is low in R22 Refrigerant, Slowly the system starts loosing cooling capacity until stops cooling. Have an HVAC Tech check system for leaks and refill unit.

Good Luck!! Don't forget to rate this post!!


Aug 13, 2010 | Heating & Cooling

1 Answer

How do i add freon to my 4 ton bryant r22 condenser


You connect your blue hose to the low side (fat cool copper) The smaller lines is high side (hot side). Your yellow hose will connect to the jug.You want 70 PSI on the low side (no more 68.5psi is ideal) Your coils needs to be reasonably clean. If the compressor seems a bit loud you could clamp on an ammeter and check the amp draw. In fact you could charge the unit using an ammeter. Check the plate for total amp draw and reach for it. More sophisticated methods for checking sub-cooling and superheat are explained HERE
A cool from Professor Zarkalicousness:


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2 Answers

Indoor unit coil air temperature 60F - 70F after R22 charge..


Clean the outside and inside coils and filter. This could be an air flow problem

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Dometic Quick Cool compressor freezing and evaporator coil


Could be low. First check air filter, air flow, and evap coil to see if it has restricted airflow. If all seems well, its probably low. The specs will tell you what type and how much refigerant. To access system, you will need a gauge/manifold set, refrigerant, and a piercing or line tap valve for the low pressure side of the system. Of course, first, you need to locate and repair the refrigerant leak.

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I entered questions for the split Goodman HVAC system yesterday. Two people responded. In response to taa43-Tom, I will get more local opinions & quotes tomorrow. Do you live in the Southeast? ...


Better off taking good money and put into something with a warranty. its probably a 4 hour job to recover solder in new valve change drier pull vacuum recharge If your system is freezing up it may not be the valve could be a check valve. low freon dirty unit all would cause the unit to freeze up is the company competent in working on heat pumps don't get some body that can work on you want in FIXED . from what you said in your 2nd post i am not convinced its the valve. Tom p.s i am in the mid west prices are not too far out of line.

Jun 24, 2009 | Goodman CLQ36AR49 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.

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