Our Ac wall unit is about 3 years old. Noticed that the coils and the insie of the unit is iced up and causing the ac to leak inside the house.riella
It is cooling, but need to make sure we are not in any danger if still operating it.
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Please check the filter. The filter is located behind the front grill. If there is a lot of dust & dirt on the filter, it will reduce the airflow over the coil significantly - causing freeze ups. A filter that is missing will require a thorough cleaning of the coils to remove the dust and dirt, then installing a replacement filter. There are products sold at hardware stores, home improvement centers, etc. designed specifically to clean these coils easily. You should be able to get a replacement filter for the AC from Sears.
If the filter is present and clean - there could be a problem with the refrigerant charge, or other problem. Many times, an AC units of this small size, it is cheaper to buy new than invest in repairing a 3 year old unit.
#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.
1 and 2 there two type of motor 1 has lubricating acces this youshould lubicate the other no noacces. but commonly if you lubricate and still noisy you change the bearings qty2 or sleeves qty2
2- common cause of ice
- thermostat on min setting
- thermostat defective
-air filter is very dirty
-evaporator is cloged no air pass throu
- loss of freon ( a/c is leaking)
Four things cause icing up:
( 1 ) Is your filter clean? dirty filter blocks air flow causing iceing up. replace filter
( 2 ) Do you hear the Indoor fan running? If the fans not running the unit ices up. Check Capacitor to fan if good.
Bad fan motor... replace fan motor and cap. If both good
( 3 ) Check Air Handler evap coil if dirty and or clogged, restricts air flow causing unit to ice up. Use toilet brush to clean.
This is always a big possibility if you have pets.
( 4 ) If the above are not present then you are low on refrigerant.
Low refrigerant will cause icing up because the gas does not flash properly. This will require a service tech.
refrigerant leaks can be as simple as a loose cap on the king valve, leaking schrader core, to coil leak.
Have the service tech show you the leak. If it is in a copper line it can be fixed. If the system is over 10 years old limit the amount you want to spend. 10 years is the standard life expectantcy anymore. Good luck
set your unit to fan mode only, to thaw the ice, after the ice melts, look at your evaporator coil, see if its dirty, if its dirty, then you might just need a good cleaning. if the coil is clean, look at your thermostat setting. it should not be all the way cold. the compressor would run continously and it would freeze the coil. third, the refrigerant system could be partially clogged up or it lacks refrigerant. these problems initiate freezing of the coil.