If your central air conditioner will not cool but you can hear it running, it may just need to be cleaned. Whether or not this is the cause of the problem, it’s the first remedy to try. Plan to do this on a relatively warm day. The following are guidelines; always refer to your owner’s manual. 1Turn off the power to the AC unit. There is normally a shut-off or disconnect panel on the wall next to the outdoor compressor. Also shut off the air conditioner’s 240-volt circuit at the main electrical panel. 2Rake leaves and debris away from the outdoor condenser. Trim any bushes that might block airflow. 3Unscrew and remove protective grilles and the top cover or grille from the compressor. If the fan is attached to the grille, be careful not to pull any wires loose. 4Use a soft brush to clean dirt and debris from the fins, and then vacuum the fins with a brush attachment (taking care not to damage them). 5Use a hose and nozzle with a trigger grip to spray debris from the fins (from inside the unit).

Protect the wiring and motor from water with plastic sheeting or a large plastic garbage bag. If your owner’s manual calls for lubricating the motor, do that now—but don’t over-lubricate. 7To test it, turn the thermostat to OFF, reset the power at the disconnect next to the compressor and the main panel, and then set the thermostat to ON. To avoid straining an air conditioner’s compressor, wait at least five minutes between turning it off at the thermostat and turning it back on. single room heat and ac unitsLet it run for a few minutes, and then feel the two pipes that connect the condenser unit to the air handler (slide any insulation back). one ac unit 2 story houseOne should feel warm, the other cool.how to make air handling unit

For more on maintenance tips, see Preparing Your Air Conditioner for Summer. Top 5 SRCOOL12K Support Issues 1. The unit has insufficient cool air flow. Not enough space around all sides of the portable air conditioning unit. The SRCOOL12K is a portable air conditioning unit that takes in room air, cools and recirculates it, and then exhausts heat and moisture to the outside via ducting. When you move it too close to the wall, you are decreasing intake air flow and impeding ventilation. This causes a decrease in its cooling capacity. Relocate it so there are at least 20 inches of space on all sides of the unit. Relocate the unit so there are at least 20 inches of space on all sides of the unit. 2. The air conditioning unit cools poorly and then turns off. Obstructed exhaust air flow. The SRCOOL12K must be ventilated in order to work properly. Ventilation is performed by the exhaust ducting attached to the rear of the unit. If you have too many sharp bends in the ducting, exhaust air flow is restricted, which can cause back pressure, overheating and inefficient cooling.

While straight or shallow ducting bends are best, the unit will operate normally with one 90° angle in the exhaust and cooling ducts. Verify there is only one 90° angle in the exhaust and cooling ducts. 3. The air conditioning unit's fans run but the unit does not cool the room. Dirty air filters impede intake air flow and decrease the unit's cooling capabilities so it is important to keep the filters clean and free of dust. Clean filters prevent the accumulation of dust on the evaporator coils so they are more efficient at cooling. Furthermore, never operate the unit without an air filter, which can also cause an accumulation of dust in the unit. Verify the air filters are clean and properly installed. 4. The air conditioning unit works but the room is warm and humid. The room is sealed or the unit is not vented. The SRCOOL12K is a portable air conditioning unit that needs ventilation to exhaust hot air outside the room via a window, wall or ceiling ducting.

It will not cool without ventilation or in a sealed room. If you are not venting the unit, hot air will be exhausted into the room, and the room will remain warm. In addition, since the exhausted hot air contains some moisture, the room may feel humid if it isn't vented. Ensure the room is vented and not sealed for proper venting. 5. The air conditioning unit cools the immediate area of the room only. Facility air conditioning is not operating. The SRCOOL12K is a portable air conditioner designed for supplemental, emergency or off-hours cooling. It does not have the capacity to be a replacement for facility air conditioning. In the event the facility air conditioning is not operational, the SRCOOL12K will only cool its immediate area. Distant areas of the room or adjacent, open areas will receive residual cooling only. Ensure the facility air conditioning is functioning. 1,776 posts, read 3,071,907 times 605 posts, read 3,791,517 times 1 posts, read 9,343 times

Originally Posted by IZthe411 You may simply have low freon and need to charge your system. If no water is coming out of the drip line your coils could be frozen. This is a total shot in the dark but you may want to try running your A/C on "Fan Only" for a few hours (like 4 or 5), then set the selector back to "Cool" to see if the performance is any better. Either way, you will need the HVAC guys to come charge the system - should be about an $80 visit. 3,131 posts, read 8,979,570 times Originally Posted by ealvarado1 What type of filters are you using? Also are the coils possibly clogged. The outside may be clogged with grass from mowing. Explain click noise please.... The compressor unit runs- but there's a clicking sound in the background that's not present in the downstairs unit. They sit side by side on the side of the house, and all things being the same, there's a click noise in the upstairs- a slight click like something is rubbing against the fan as it turns.