The air conditioner does not cool the air: reasons

climateservice.com.ua

Although air conditioners are equipped with a heating function, most users use them to cool the air. In winter, cooling is not important, so split systems have a period when they are not used. If after a long period of inactivity you turn on the air conditioner, but it does not cool or blows warm, then read below the reasons why the air conditioner does not cool the air.

Before moving on to the main content of the article, make sure that the problem is not due to external causes. These reasons include:

Device operating time. After starting the split system, you need to wait 10-20 minutes for a significant change in the temperature in the room. The heating time depends on the area of the room being cooled, the indoor and outdoor temperatures, and the power of the system itself.
Insulation tightness. Poor cooling occurs due to holes in the insulation of the room. Open doors, windows, other openings and turned on ventilation can affect the rate of cooling of the air in the apartment.
Obstacles. Cooling problems can be caused by various objects blocking air flow or flow.

If there is enough power, the room is isolated, there are no obstacles, but it does not get colder, then diagnostics of the device is necessary. First, measure the air temperature: place the thermometer near the air intake grilles, and then hold it at the outlet. Be careful not to place the thermometer inside the grilles - it may fall through and get caught under the fan. If the outgoing air is 6-14 degrees colder than the incoming air, everything is fine.The temperature difference between the intake and exhaust air is indicated in the device passport.

If it doesn't match, the problem is with the device. Next: a list of reasons why the air conditioner does not cool, how to fix it.

Fan mode is on. A common mistake, especially on older models. Error sign - the device is turned on, but does not blow cold air. To fix it, change the mode using the remote control.

The device operates in heating mode. Again, a common mistake for older models. Its sign is that the device blows warm air. To fix it, change the operating mode.

The filters are clogged. Split systems are equipped with filters to clean the air from large contaminants that settle on the heat exchanger (its plates). Because of this, the radiator absorbs heat worse - the air conditioner cools poorly. If the hose is heavily contaminated, the condensate will not flow through it; it will accumulate in the pan and then flow out of the unit. Signs of clogging are frostbite in the evaporator tubes, the device cools poorly, condensate does not flow down the drain hose (it can accumulate in the indoor unit). To fix the problem, disassemble the external unit of the split system (if you don’t know how, refer to the instructions), disconnect and remove the clogged elements of the filtration system, wipe the components, wash the filters (use only cold water, because hot water will deform the filters), install them back and check the operation of the device.

The radiator of the external unit is dirty. The same large contaminants such as dust, lint and wool can clog the radiator fan of the device, so the fan rotates less well and, as a result, the air conditioner cools worse.If the device is heavily soiled, the compressor will overheat. Signs of this problem are lower performance of the device, the fan in the external unit does not make noise. To fix the problem, you need to clean the radiator from contamination. To do this, you need to open the external unit and clean the fan. Use brushes, rags, sponges or specialized devices.

Low voltage. The split system does not receive electricity with the required parameters, so the rotor or its winding may overheat. This also causes the motor to turn off. Signs of a problem are warm air being blown out, the compressor does not work or is not noisy (may work for short periods of 2-4 minutes). To fix it, you need to install a relay. It can be located either inside the device together with stabilizers, or separately.

These were the main problems why the air conditioner did not cool. You can eliminate them. Other problems require the intervention of specialists. Among them: