Question about Whirlwind FH-778 Air Conditioner

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I Have a doublewide, im wanting to know who i install freon and stop leak in my indoor central heat and air pump.

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First you have to have a EPA certification too purchase, and to handle Refrigerant. in order to stop the leak first it must be located and in most cases soldered shut depending on the leaks location if the leak is in the tube sheet of the coils it my be better to replace the leaking coil. if the leak can be repaired the refrigerant must be removed from the system, leaving it in a vacuum then bring it up to atmospheric pressure (0 psi) using dry nitrogen. then the leak can be repaired, after leak has been repaired pressure test system at 120 psi for 20 min. watching gauges to see if pressure drops. If pressure holds, release nitrogen then evacuate system with vacuum pump. most manufactures require a 500 micron of less vacuum to ensure no moisture is in system then charge system according Manufactures Specification. charging and service ports are normally located at outdoor condensing unit where copper piping connects too condenser, charging manifolds are a necessary tool for this repair. I would highly recommend having a HVAC contractor preform this repair, amount of refrigerant that goes into the system is critical to performance of heat pump operation.

Posted on Sep 16, 2010

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1 Answer

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How a Central Air Conditioning System Works
amn_howac.jpg


Facts:
  • The typical central air conditioning system is a split system, with an outdoor air conditioning, or "compressor bearing unit" and an indoor coil, which is usually installed on top of the furnace in the home.
  • Using electricity as its power source, the compressor pumps refrigerant through the system to gather heat and moisture from indoors and remove it from the home.
  • Heat and moisture are removed from the home when warm air from inside the home is blown over the cooled indoor coil. The heat in the air transfers to the coil, thereby "cooling" the air.
  • The heat that has transferred to the coil is then "pumped" to the exterior of the home, while the cooled air is pumped back inside, helping to maintain a comfortable indoor temperature.
  • Central air conditioning can also be provided through a package unit or a heat pump.

Benefits:
  • Indoor comfort during warm weather - Central air conditioning helps keep your home cool and reduces humidity levels.
  • Cleaner air - As your central air conditioning system draws air out of various rooms in the house through return air ducts, the air is pulled through an air filter, which removes airborne particles such as dust and lint. Sophisticated filters may remove microscopic pollutants, as well. The filtered air is then routed to air supply ductwork that carries it back to rooms.
  • Quieter operation - Because the compressor bearing unit is located outside the home, the indoor noise level from its operation is much lower than that of a free-standing air conditioning unit.





















ed.

Sep 10, 2008 | Amana Heating & Cooling

1 Answer

Ice on coils of heat pump not cooling


Which coil?, indoor or out? Indoor coils freeze due to clogged filters, low freon, blower motor not working. Outdoor coil freezing could mean, in rare cases in cooling mode, reversing valve not shifting.

Oct 02, 2013 | Carrier 52CQ-312-4 Comfort Series Heat...

1 Answer

My Goodman GSC130361DE 60 Htz has problem with coils iceing up. Cleaned several times.


Hi, I am assuming you are talking about the indoor coil icing up when you are in cooling. The reason I am asking this as this appears to be a heat-pump and they will ice up in the winter at the outdoor unit. I will go with the indoor coil. If the indoor fan is blowing up to speed and you have cleaned the indoor coil but still have this ice forming, it could very well be that you are low on freon. This will also cause the suction line, the large copper line outdoors to ice and on into the indoor coil. This will happen if you have developed a leak some where. Also, make sure you have good strong return air coming back through the air filter, because if you have problems with the duct work like holes from varments, or you have had any repairman around the duct work, sometimes they will flatten it causing no air flow and you will have ice. My bet is you are low on gas. Shut the unit off to make sure it has no ice on the coil, and go to the outdoor unit. Have someone turn it to cooling and put your hand above the fan on the condenser coil. The air should start to get warm and then hot if the freon level is ok. This also depends on the outdoor temperatures. The hotter it is outdoors, the hotter the air will be. If it is rather cool, around lets say 75*F, and this copper suction line is starting to form ice, the problem is it is low on freon. In this case, this is something you will need to call a tech out to charge the unit. You have to be certified and be able to buy the right freon which is only available to a/c and refrigeration tech's. If this is a heat -pump, and it is winter where you are and the outdoor coil is icing up, let me know and I can go through the steps to check this out. I do believe this is a summer problem where you may be, but you never know unless you ask. Please don't forget to rate me on this post as I am sure you will be kind. I wish I could save you a tech call, but if its low and you have cleaned the indoor coils, and filter is clean, then this is the problem.
Sincerely,
Shastalaker7
A/C, Heating, & Refrigeration Contractor

Sep 26, 2010 | Goodman CLQ36AR49 Air Conditioner

1 Answer

Hi We have just arrived back in Wellington from overseas. Our house has a gas central heating system - the unit is Brivis Buffalo 20. What we would like to know is how cost effective the Brivis Buffalo 20...


Hi, if you are planning to change this system out, please stay with a gas fired central system as compared to a heat pump, they are much more cost effective. Heat-pumps have so many problems as there are more parts on them to go wrong. The compressor and condenser fan motor run year around as with a heat-pump they use what is called a reversing valve that changes the flow of freon making the indoor coil the outdoor coil and the same with the outdoor coil becomes the indoor coil in the winter season. I can recommend excellent gas fired units compared to the Brivis unit you have that is much more cost effective, such as the Bryant, Carrier, Goodman. I would go with a Bryant and talk to a dealer. Stay away from a heat-pump no matter what they tell you as I have worked on them for many years and if you have gas available, stay with gas. You will heat your home much faster and save on electricity as this heat -pump units need heat strips for back up heat as they can't keep up the temperature with out them. I hope I have been of help to you on this, and you will be kind when rating me as I know you will. Please contact a Bryant dealer as you will not regret it.
Sincerely,
Shastalaker7
A/C, Heating, & Refrigeration Contractor.

Sep 05, 2010 | Heating & Cooling

2 Answers

My heat unit will not blow hot air unless we go outside and hit a button on the back bottom of the unit. Once we do that it will blow hot air for that cycle. when it is time for it to come on it is cold...


If it does not have a furnace or heating elements for heating, then it is a heat pump, which is rare for a central AC system, but makes sense of the fact that it blows warm air when you reset the pressure switch, which may indicates freon pressure charge problem if your AC system has a reverse valve and uses freon to for heating (heat Pump).

Do you get heating when outside unit runs? if you do, check freon pressure levels and top up to required pressures. The button you depress is a pressure reset switch ... that is if your AC system is a heat pump ... which, as pointed above, it is not common for central ACs.

Nov 07, 2009 | Ruud Central System Air Conditioner

1 Answer

Not blowing cold air


Your in house core could have frozen over. check the core inside the indoor blower unit. it may have frozen over. this will interrupt the cold air function.

May 28, 2009 | Weather King 10AJA6001AH Air Conditioner

1 Answer

Air conditioning unit


On a "Non Heat Pump" unit, icing of the pipes is not good. It is an indication that you either have a low freon level (Charge), low load, wrong superheat.
A low load usually means, in this case, something wrong with the air flow. Clogged filter, wrong fan speed, something blocking the return air grill, like a chair/ blanket, etc.
If low on charge, the evap (Indoor Coil) will ice up and the ice will then slowly creep along the pipe untill it gets to the outdoor unit. This is really no good. Air cannot go thru solid ice so naturally there is no cooling happening.
If a company replaces the outdoor unit (Condensing Unit), there is no warranty on the indoor unit. I do not know of any company that will repair an indoor coil (Evap). Just not smart money. They have to capture the freon, open the system, make the repair, ensure the correct level of freon is in the system, and most time, add a filter/ dryer for additional filtering and drying of the freon. With all that, no one is going to patch a leak on an old coil because if it leaks now, it's going to have another soon. You'll just be chasing leaks and spend money after money. Hope that makes sense. HVAC companys have to follow the EPA rules too. Leaving a system leaking above a certain percent of it's total charge is a major no-no. They will not do it.
Hope this helps clear up a few things and good luck.

Jul 11, 2008 | Goodman CLJ30AR32 Air Conditioner

1 Answer

Heat pump not running


Depending on the age of the unit it could be several things, does it have a circuit board? Contactor could be bad, freon leak if it has a low pressure switch, burnt wires, connections, etc. Do a complete visual and check for 24 volts, does the indoor unit run? Transformer may be bad.... No indoor unit - no outdoor unit, most of the time the outdoor unit gets its 24 vac power from the indoor unit which runs them both, look for fuses (like car fuses)..

Apr 26, 2008 | Heating & Cooling

1 Answer

AC WON'T COOL


Sounds like you have a freon leak or your compressor has stopped working. You will probably need a service tech. If it is out of freon, don't let them just add more freon, make them find and repair the leak first. Good Luck.

Mar 27, 2008 | Intertherm P3RA-048K Air Conditioner

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