I changed the filter in the house and cleaned the coils outside with a chemical cleaner, they were really dirty. The fan in the house is still constantly running, it will kick the outside fan on when you hit the reset button and when it reaches the temperature the outside fan shuts off but the inside one keeps running and the outside fan won't kick back on unless you hit the reset button.
Check your wall thermostat to make sure the "fan" switch is in the "auto" position. If it is set at the "on" position, the indoor fan WILL run continuously. Not really enough info as to what type of split system you have. Gas? Electric? Heat pump? Oil? Wood? Newspapers? See what I mean? Is it variable speed? Do you have a "special" thermostat for certain operations? Does your system incorperate inverter technology?
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Hello, air conditioners will freeze either due to low airflow.....such as dirty filter, dirty evaporator coil, weak or not running blower motor. Also, a low refrigerant charge can cause the unit to freeze up.
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works by exchanging heat from inside a building to the outside air. To do this
some very basic refrigeration principles need to take place. One of the most
critical pieces that make this happen is the condenser coil. This is usually
the aluminum coil the surrounds the air conditioning compressor. What
happens inside this outdoor unit is a very basic state change of the
refrigerant inside the air conditioning unit. The refrigerant that changes from
a liquid to a gas inside the indoor coil moves to the outside where the
compressor compresses the gas under high pressure. When this happens the gas
also becomes very hot. The hot gas then leaves the compressor to start
traveling through the many feet of tubing in the condenser coil. As the gas
cools it changes back to a liquid form going back indoors to start the cycle
all over again. Big
problems start when the condenser coil becomes so blocked up with dirt that the
hot gas in the condenser coil does not cool enough to change the hot gas back
to a liquid form. If this happens the cooling process does not happen and then
air conditioner runs but is not cooling. The compressor starts to get very hot
and the ultimate result will be the death of a compressor. For these reasons
the condenser coil must be kept clean and free of debris at all times when the
air conditioner is running. Cleaning the coil is a fairly simple process, Here
are a few guidelines to follow when doing this. To clean
the coil a few simple tools are needed. A garden hose with a nozzle, wrenches
to remove the condenser fan, a garden sprayer for applying the cleaning
solution. The first thing is to disconnect the power to the outdoor unit. There
should be a disconnect switch of some type near the condenser. Then remove the
fan from the condenser unit. Usually this will be the top of the unit. The fan
can usually be laid aside carefully without disconnecting the wires to the
motor. Carefully wet down the coil with the garden hose. If you have very high
pressure water where you live be careful that the water pressure does not bend
over the fins on the coil. These are very thin and fragile. If they get bent
over the air will not be able to freely flow through them. Using the cleaning
solution from the garden sprayer, coat he inside and the outside of the coil.
Let the solution work on the dirt build up before washing it off. If you use a
foaming type coil cleaner then let the foam cook the dirt out of the coil. Then
use the garden hose to wash the dirt out of the coil. I often work from the
inside spraying out through the coil. This is the reverse of the usual air flow
and it washes the dirt out easier. Rinse the coil with water till it is clean
with no more dirt or cleaner coming out. Replace the fan and start the unit
back up. The
cleaning solution for the condenser coil can be any good household cleaner.
Many automotive type radiator cleaners will work well. For very dirty
condensers it would be good to buy a foaming coil cleaner made specifically for
cleaning condenser coils. A local plumbing and heating supply house should
stock coil cleaning solutions. Most of these solutions are very strong
chemicals. Be sure to wear gloves and eye protection when working with them. By
keeping your air conditioning condenser coil clean, you will help to have your
air conditioner running at the best efficiency possible. A clean condenser coil
is one of the easiest ways to save electric while running your central air conditioning
system. A clean coil will allow your compressor to run cooler and help it to
last longer. Your condenser coil should be thoroughly cleaned at least once a
year. If in you live in very dirty areas like along a dirt road you may need to
clean the condenser coil more often. Also do not do things that would clog up
the coil. Blowing grass clippings into the condenser coil is one common thing
that happens. Keep shrubbery from growing into and around the condenser coil.
This stops the air flow to the coil. Large flowers planted too close to the
coil can do the same thing. As you
can see there are many things that can cause your air conditioner to work
harder and cost you more money. By taking a the time to look over things and
give it a cleaning you can save a lot of money.
A line or coil freezing is a sign of restricted air flow or low on freon. Make sure the fan that circulates the cold air is working and the filter and coil at the filter are clean. A dirty coil can be cleaned with coil cleaner and a water hose. You will need to remove the unit and take it outside. (window units only) You can buy a bottle of coil cleaner at any hardware store. Follow the instructions on the bottle but basically you spray the coil until soaked wait 5 minutes and flush it clean with water from a hose. Repeat if necessary. Try not to get water and cleaner on the controls. Be careful water will be trapped in the unit you may want to tip it toword the back for 10 minutes or so and if possible let it set outside to dry. Reinstall the unit and put a clean filter on it and give it a try. If ice forms again it is low on freon and will require a repairman to fix it. Freon is a restricted item and you have to have a license to buy it. good luck..
the unit needs to be pulled out and taken outside and cleaned we clean the frt coil , drain, and rear coil. that should take care of problem. we pull them and chemically clean them out with a product called coil cleaner roughly 145-225 depending on size and were u live . if you do it yourself may need 2 people to pull out and can buy the coil cleaner for about 25.00 dollars
Your problem is there is debris inside of the casing blocking the drain hole in the back of the unit.. Go outside and look under the unit and you will see several holes throughout. These holes allow the condensation to drain out from the bottom of the unit. The best way to clean the unit is to remove the unit from the sleeve take the unit outside and you can wash out the system with a water house as long as you make sure that you don't wet any of the fan motors. The metal thing you refer to is the evaporator coil. If you go to the home improvement store you can purchase a can of coil cleaner. This cleaner is sprayed into the coil at which time it foams up like shaving cream. Let it sit on the coils as directed on the can. Once the time has elapsed rinse the coils well remembering not to get any electrical parts wet (I suggest purchasing a pump up garden sprayer for this because it is easy to control where the water will go) After this is done let the unit sit until the water has disappated then reinstall into its sleeve. The dust by the fan can be removed with a brush and a vacuum (wet Vac). Good luck on repairs
#1 problem with AC units - dirty coils, this leads to many other problems and is caused by neglecting to change filters monthly. You can buy coil cleaner commercially, but it is not the coils you see that get dirty. There is another set inside that is usually not visible. If you look outside and your unit is "iced up" there is a 98% chance that is your problem. Sometimes it could be iced and you can't see it from the outside. Solution, turn AC off and blow fan to thaw. When thawed, clean coils with coil cleaner and coil comb.
Relay switches, you already pushed it so you may have a bad switch.
These are the two most common problems. A mechanic will be quickl to say it is your compressor for $. There are normally only half a dozen things that go wrong if your AC is 10yrs or less. If it is over that, it could possibly have a more serious problem. (Secret hint - I have known AC's to last 30+ years if the filters are changed regularly. Letting dust and dirt build up on coils invites a host of other problems due to the stress it puts on the other components.
Low on refirgerant, or dirty coil, or it was run on a cold night. Either way, the only way to take care of it is to start by running the fan only, and shutting the cooling off. This will melt the ice on the coils. It is going to make a mess. Have the unit serviced if it is not dirty, if it is dirty clean it with an approved cleaner. Your local hvac repair shop should be able to recommend a good cleaner.
If you have ice on the Line you are iced up. If coil is iced no air can get thru. Now First. Turn of ac and turn fan to on posotion. That will thaw unit. Let it run 45 minutes. That should do it. If the fan is not running you amy have a bad fan relay. One of the reason iced up unit is dirty evap, coil inside. Try to thaw it out first. You can clean the coil with a stool brush. Does not damage the coils. Good luck
Check t-stat and make sure fan is set to "Auto", that might be why fan is running all the time, or it could be a fan relay that is stuck closed. It sounds like you A/C is over charged or you have a bad high pressure switch, this was a common problem with this manufacture especially in the heat mode.
An a/c coil freezes up because there is no heat load on the coil. It's either dirty, low on refrigerant, filter dirty, the fan is not running. Defrost the coil by leaving the unit off until defrosted. If the coil is accessible you use a coil cleaner thru a chemical sprayer and spray coil. Do not use the stuff they sell at Home Depot or Lowe's they don't work. get some from an a/c contractor or supply house. After with the chemical sprayer rinse the coil with water. You may have to repeat a couple of time to get it good and clean. If you can not access the coils then you will need to pull and clean the coils. To do this you'll need to pump down the refrigerant into the condenser coil and cut the evap. coil out of the system clean and reinstall. With this you'll need refrigerantgauges and know how to solder and have access to refrigerant. The same if your low on refrigerant you,ll need access to gauges and refrigerant. Depending on system it's either R-22 or R-410 refrigerant.