Well the thing is that you puting sheets and thing under it only make alot of things harder for you because u are just keeping the some of the water in the ac so you keep making it freeze more so this is what u do u take the ac out of ur window and put a towel on the floor but make sure it folded twice because you will have water all over the place yoyu take the ac from the back and tilled it and u will see water come out tryu front and back to make sure make sure all the water out and put it back inthe window turn it one and ur do but un mit want to do this latly so it want freeze as much
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Unit needs to be taken apart and washed out , also check to see if motor turns freely by hand , clean base of unit fans / blowers and drain ports / channels . Check outdoor motor to see if bearings are tight or fan overheats and cuts off if so replace outdoor motor .
There are a few thing's that can cause this, if the evaporator coil in the a/c is blocked a little, you could get a little cool air, it's like having a dirty filter. If the condenser coil is blocked, you won't get cold air. If the refrigerant is low, you won't get cold, cold air.
Check and clean the filter if found to be dirty. It is usually behind a decorative panel below the cold air output grates (when the cold air is on the top front).
The filter is behind the large, rectangular, slotted front panel. The evaporator coil is behind the filter. The fan behind the evaporator pulls the room air through the filter and evaporator coil where it is cooled and dehumidified. It is then discharged through the grates on the top of the front.
Direct the airflow from the unit up and away or left / right to prevent the cool air from being drawn in the front of the unit (this is where the thermostat sensor is located). Use the highest fan speed to help force the air away from the intake, too. Inspect the condenser and evaporator coils (condenser is outside and evaporator is directly behind the filter. Clean if dirty or icing over. Be sure to install a filter if none was present. There are products made specifically for cleaning between the fins of the condenser and evaporator coils. Use them only as directed.
If these suggestions do not work, you may have a problem with the thermostat, refrigerant level, condenser or condenser fan.
Go to the outside unit and see if the compressor is running. It may be hard to hear. If you need to you can disconnect one fan lead so you can hear the compressor. If it isn't running then check the capacitor. If it is running then get the refrigerant charge checked. Also check air filter(s) and make sure the coils are clean.
when is it the last time you cleaned the unit and changed the filters? it may be working good but you need to maintain the unit...clean all filters and see if you can vacum alll parts especially the condensing unit (you may need air pressure) can you move the unit to outside so you can clean it good? if you can use air or water pressur to clean it after you cover the lectrical parts. Good luck. (save your money this unit need cleaning only)
First check and clean the filters, and the evaporator coil. (thats the "inside" coil that has the indoor air sucked through it, cooling it and then pushing it out the vents.
If the filter is clogged or the coils are dirty, it will not cool properly and potentially freeze up.
Also check the condensor (outdoor) coil, if it is dirty/clogged, it will run hot and not cool properly.
If all coils and filters are clean, and the fan motors are running and in good condition and it is still not cooling then you are likely low on refridgerant. (handling/purchasing refridgerant other than R134A requres a CFC certification by law)
Heat pumps have saftey circuits that prevent liquid flooding of the compressor. Inadequate airflow across the evaporator in cooling can trip this circuit. Have your package unit serviced with particular attention to cleaning the evaporator coil and be sure your filters are clean and changed frequently in the summer months. Hope this helps GL!