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Clean indoor filter , and coils in unit (you must remove from window and remove top from unit to expose coil, After cleaning coils prop up unit so it slopes to rear and spray back and forth at bottom of front coil until drain is clear . Never turn unit upside down , and do not get water inside of fan motor . Also clean evaporator blower wheel . With unit clean and drained out place in direct sunlight for at least 2 hours to completely dry before replacing top and reinstalling in window , or just drain out , reinstall and leave unit unplugged for at least 24 hours to dry before testing . If unit is clean and still icing , check to see if thermostat works (place object in front of unit to direct cold air from top of unit onto thermostat temperature sensor and compressor should cycle off, if not replace thermostat . If unit still ices you will need a pro to repair sealed system of unit or simply buy a new one .
What you are hearing is a water buildup in the drip pan under the unit. This is caused by a clogged drain hole and/or not enough downward tilt on the rear of the unit. The rule of thumb is 1/4" to 1/2' rear downward tilt. This allows the water to flow to the rear of the drip pan and out thru the drain hole. The spitting ice, is from the fan blades hitting the water in the drip pan. Turn the unit OFF & unplug it. Then check and adjust if necessary, the things I mentioned above. Aslo, be sure that the air intake filter remains clean.
Hope this helped you and thanks for choosing FixYa.
After I opened the front of the unit and discovered it full of ice, I left the unit off until it defrosted, so to speak, after the ice had melted, I turned the unit back on to see what happened. It is working fine now, I'm not sure why it iced up, if this is normal or not, but after it melted the problem was solved.
Yes this occassionally happens when the humidity is high.. Also it is ok to run the air conditioner for about 18-20 hours a day but try to switch it off for a while if possible. This will improve the life of the air conditioner.. if you have any further queries do ask me..