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Have a goodman ckl-24-il unit with txv.need superheat,and sub-cooling chart

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Here is a link to a pt chart click at top right all you need. just google how to take super heat or sub cooling if you dont know how. super heat should be @ 7-12 and ur fine. if you are over 32 deg f or 55 psig u should also be fine

Posted on May 30, 2010

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What range should your super heat be on txv ?


I normally don't take a superheat reading when I have a txv. That can fool you. A sub cooling reading is the best when a txv has been installed. I've seen normal temp readings of 0° superheat and 16-20° sub cooling with "factory specs". And that was normal! That valve will open and close changing superheat values. Sub cooling is the way to go! Find some manufacturer specs if possible.

May 27, 2015 | Heating & Cooling

1 Answer

What range should your super heat be on the txv ?


I normally don't take a superheat reading when I have a txv. That can fool you. A sub cooling reading is the best when a txv has been installed. I've seen normal temp readings of 0° superheat and 16-20° sub cooling with "factory specs". And that was normal! That valve will open and close changing superheat values. Sub cooling is the way to go! Find some manufacturer specs if possible.

May 27, 2015 | Heating & Cooling

1 Answer

My Goodman condenser which was recently replaced is making a severe swashing noise when it stops. Like a back flush or something. Need to know if this standard.


Normally if it does not sound right, it is not right. By your discription it sounds like your compressor is having a problem with flood back caused by a txv not metering properly, or an overcharged system. You will need a tech who can determine superheat and subcool for your refrigerant system. Find a tech who can determine these values. Superheat and subcool is normally around 8 -12 degrees. Superheat is the amount of additional heat the refrigerant picks up in the evaporator once it is turned to gas and is needed to keep liquid refrigerant from flooding back to the compressor. Compressor are designed to compress gas not liquid. Subcool is the additional cooling refrigerant undergoes once the refrigerant turns back into into liquid in the conderser. Subcool ensures the refrigerant remains in liquid form until it reaches the metering device. Only liquid suppied metering devices will pass the required amount of refrigerant to achieve the rated cooing or heating rates. If it is liquid flood back, your compressor will be damaged and will need to be replaced. Hope this helps

Oct 07, 2014 | Goodman Manufacturing Goodman R410A 13...

1 Answer

P3ra-048k uses what type of refrigerant and manufacture charging chart


This sounds like a trick question. Are you a service man? You must know HVAC well if you know sub cooling! There is a tech info plate on the unit that tells you how much and what type of refrigerant. Check the fan direction and if indeed it is running at all. If its icing up back to the compressor is the condenser fan running? Make sure you thaw it completely before trying to recharge it. Also check for plugged filter dryer, and as a last resort see if it has a plugged or incorrectly sized orifice or TXV. Charge by superheat method.

Jul 15, 2014 | Intertherm P3RA-030K Air Conditioner

1 Answer

Charging chart missing. Goodman 4-ton AC (model CK 49-18) What are the high and low suction pressures at 90 degrees F?


Hello, if this is a R-22 unit your low side should between 70-75 psig and high side should be between 225-230psig. But keep in mind always measure the superheat if it is a fixed orifice and subcooling if it is a txv unit

Jun 07, 2011 | Amana Heating & Cooling

3 Answers

Not cooling as it should


If you have a crushed, kinked, or otherwise restricted fitting in the system, it's possible the cooling may be affected. Pressure readings can be thrown off, and refrigerant flow can be inhibited.

Since the unit is new, you should have a complete parts and labor warranty, so ask the installer what the reason is that the system doesn't provide the cooling you were probably promised when they sold it to you. They should have taken into account the location of the condensing unit, the size and insulation in your house, indoor and outdoor conditions, your geography/climate, and any other load factors before selling you the system.

Jul 22, 2010 | Goodman CLQ36AR49 Air Conditioner

1 Answer

Goodman 2.5 ton 14 seer with txv. low compressor amps


no it's good,man. LOL. The RLA is a max not a target. What is the RLA for the compressor?

Aug 12, 2009 | Heating & Cooling

1 Answer

Goodman a/c unit


The pressure depends greatly on the ambient temperature outside. There are two methods I use for charging a system

1. Is calculating the superheat
2. Is calculating the sub cooling.

Any good service technician will use these methods.

Jul 09, 2008 | Goodman CLQ36AR49 Air Conditioner

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