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Re: portable a\c unit
If the air
doesn't seem cool enough it is necessary to use a thermometer to check
the difference in temperature between the air going into the unit and
the air being blown into the room. Ideally, the temperature difference
should be more than 15 degrees. For example, if the temperature going
into the air conditioner is 80 degrees, the temperature coming out of
the unit should be at least 65 degrees or less. If the difference is 15
degrees or more there is probably no cause for concern. If the
temperature difference is less than 15 degrees you should check the
Check to make sure the air damper is closed. If it's open, it will bring in outside air and reduce the efficiency of the unit.
the winter season many people cover their air conditioners to protect
the unit from the weather. In the spring or summer they will sometimes
forget to remove the cover. If your unit has a cover on the outside
portion of the air conditioner remove the cover first.
condensing coils will always be on the "warm" side of the air
conditioner. That is, on the side that faces outside of the room to be
cooled. Air is drawn into the back of the air conditioner on the sides
through vent slots and is blown directly out through the condenser
coils. If the coils get clogged with lint, dust and dirt the cooling
system cannot provide the cooling necessary. To clean the coils it will
be necessary to remove the entire cover of the air conditioner or pull
it out of the wall to gain access to the coils. They can be cleaned by
blowing compressed air at them or by using a soft bristle brush to wipe
the dirt off. It is important to also clean any dirt or lint build-up
in the bottom of the air conditioner so the condensate water will be
picked up by the condensing fan slinger properly.
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It sounds as if warm outside air is being drawn back into the room when the unit is not actively cooling. Portable units depend on room air to carry the heat outside, & therefore will not work properly if the room is too airtight. Provide a makeup air passage by leaving the door slightly open, & see if this helps. Use a room thermometer to see if your desired temperature is being reached. Note that if the wind is strong & coming from the wrong direction, it may not be possible to prevent warm air drawback.
I would drain the water out of the machine via the plug on the back once the unit is drained turn on, wait a few minutes. If compressor does not come on or comes on and does not cool, you need service beyond diy.
Is this a window unit? Sounds like the compressor may be cutting on and off. That would cause the alternating air temp you are feeling. Make sure the condenser fan is running. If it isn't running head pressure will build up on the compressor until it shuts down. Then the pressure will equalize and the compressor will kick on again. Also check your filters and the condenser coil to make sure it is clean. Let me know what you find.
well it sounds like the compressor is not turning on. does it have thermostat? if so turn it way down. clean any filters. is it a window unite or portable most of them are too costly to repair unless you do it your self.
sounds like the compressor is turning off cause of high pressure. check the coil that the exhaust hose connects to, if dirty clean it. if the fan is not blowing enough air threw the coil the unit will build up high side pressure and cut out, but will turn back on when pressure drops. if that dont help, maybe the fan motor is bad or needs taken apart and oiled.
you need to disassemble the rear fan shroud and clean the back of the condensor. If the compressor runs and the lines are cold, it is dirty. The rear condensor is the one discharging the hot air. Both sides must be clean and free of dirt/grime
Either the unit is really dirty or it is low on refrigerant. A unit tha is low on refrigerant will start off cold and withing a few minutes, start warming up. If you aren't seeing any water its because of one or both causes listed.