I moved into an apartment which had a Samsung window unit in the bedroom. After a year, it has quit cooling (the fan still works well). I also noticed I don't hear the compressor kick on and off any longer. I asked at the manager's office and discovered that the unit was left by the previous tenants and doesn't belong to the apartment complex! I loved having this air conditioner. Is there something short of hiring a serviceman that I might try to see if I can (or my boyfriend can) repair it?
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Re: Window unit no longer cooling
You could pull the front cover off and see if there is a loose wire in the control box (behind where the control knobs are). it could just be a bad thermostat. you will see a copper wire with a silverish end on it coming out of the t-stat, try holding it between your fingers for a few minutes to warm it up, turn the t-stat to coldest setting possible, turn unit on, and then see if the compressor will kick on. if neither of those things help you could try replacing the thermostat, probably not expensive from samsung if the unit isn't too old. if that doesn't help either then the compressor probably bit the dust. but if not its worth fixing! hope that helps.
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How long has it been running since taking it back out of storage? I have heard that noise from many a AC unit and its usually the refrigerant moving around on the first startup, but usually goes away. The other things i could think of is if its really humid it could be condensation build up thats getting splashed by the outside fan, not the blower that moves the room air through it but the fan that blows the hot air out the back side on the outside. If it has a condensation drain that allows the water to drip out the bottom on the outside make sure its not plugged up, and also make sure the AC has a bit of a downward angle to it, so that the outside end is slightly lower to allow condensation to flow to the outside. If none of that solves it you could have developed a leak and lost some refrigerant and what your hearing is the compressor sucking at the refrigerant, think of a water pump with an occasional air bubble in the line, or when you turn on the garden hose and it has to purge the air out before you get a solid stream of water. But i would check the easy things first because most window units now days are throw away, can't repair or recharge them.
Since you don't give a model number, I will have to assume that it is a window unit, if not this probably won't apply. When a unit freezes up - as in ice on the evaporator fins it is usually either a low freon condition or the fan is not moving air accross the unit.
With the supper high temps that we are experiencing, many units that are undersized for the area that it is trying to cool are having serious problems. One client called us out to respond to a similar problem, so we charged the unit to factory specs. A few days later she called and said that the unit wasn't cooling properly, so we went back out. Since it was a window unit that was in the bedroom, it was a small unit. She was leaving her bedroom door open with fans to draw the cold air out to the rest of the house, which the unit was not sized to do.
The problem with window units and any service tech will tell you it cost more to repair than you can buy at Walmart or home depot. Unless you know someone who can charge it for you. Window units are a sore subject. A 200 dollar window unit might cost 200 dollars to charge system. SORRy rusty
I would consider replacing the t'stat if it does not seem to cycle at the desired temps. Also, the outside air allows fresh air to be introduced into the conditioned space but it will also effect, to a degree, the units ability to cool the conditioned space. Once you get the unit running, try it with the baffle on and closed and see which one you like. Remember, the outside air has and add humidity and can make it seem hotter than it really is in the room.
I recommend that if you have animal and you want to have the unit on all day that is fine if you have an ac unit with a thermostat and it is big enough to handle. The unit that is in the window is ok if your home but it could cost alot if there is no thermostat because it will run and run and run. Then if it don't cool the house enough means its not the right size. The unit / compressor could overload and kick on and off and might not work when you get home and the house will be like a firecracker.
Best bet would be to replace it with a unit for the size needed for the apartment. It would be effecient.
if we can help further just let us know.
This question is really to broad to answer. There are several things that could cause it to stop running. I think I would turn everything off, let it cool down for several hours and try it again. When you kick it back on, take note of what is running and what's not running. Inside fan, outside fan, compressor. If the outside unit will not run at all it could be as simple as a grasshopper caught in the contacts. If you hear the compressor running outside but no outside fan, The fan motor probably needs replaced. Please make sure that all power to the unit is TURNED OFF before removing cover plates on outside unit and before trying to remove insects from contact points. Check all wiring inside outside unit while it is open. Also check capacitors for swelling or leaking. If you don't know how to turn all the power off or open the outside unit, you need to call a professional AC technician. Hope this helps.