Domestic air conditioner is used to optimize the microclimate in apartments and office premises, the area of which is not more than 90 square meters. m. Models of units are monoblock, two-block and multi-block.
In household air conditioners, buyers pay attention to the presence of a large number of functions, control, heating system and the option to improve the air quality in the room.
Principles of operation of a domestic air conditioner
The household air conditioner is able to maintain the set temperature in the room, working in the periodic shutdown and on mode. The air is cooled by blowing a powerful jet from the distribution louvers. The flow temperature is 11 ° C, which is not so safe for human health.
This problem was solved with the advent of innovative inverter units. The new design involves smooth temperature control, neutralizes the negative effects of the cold flow, gently changes the speed of the compressor. The technical characteristics of such an air conditioner suggest a wide range of power for the supplied air.
Air conditioning and ventilation
When you turn on the air conditioner, the fan turns on, but do not confuse these concepts. To maintain a healthy microclimate in the room, it is necessary that fresh air enters it. This provides ventilation. The air conditioner can help with this, but is not able to perform the named function on its own.
Fans operating in the outdoor units of the air conditioner do not belong to the ventilation system and do not supply fresh air to the room.
The stores offer models of air conditioners with a fresh air supply of up to 20 cubic meters. m / hour. But this is not enough to maintain a healthy microclimate. If you rely on building standards, the level should be 60 cubic meters. m / hour per person.
In modern devices, the air masses coming from outside are subject to heating or cooling by the system, after which they are fed into the room.
Why the unit is not working
It so happens that the air conditioner does not turn on. The first indicator of a malfunction in the operation of the equipment is the absence of a signal from the remote control.
Check if the unit is connected to the mains. Disconnect it for a period, and then reconnect. The same thing needs to be done with the remote control. Check if the batteries are dead in it.
Causes of malfunctions in the air conditioner
The reasons why the air conditioner does not turn on are many. Sometimes the user cannot figure out the problem on his own.
- The air conditioner does not turn on due to voltage instability in the mains. In our country, this is a fairly urgent problem. This factor contributes to the fact that the unit operates smoothly at high temperatures, which causes drying of the insulation and breakdowns in the winding of the housing. In the absence of grounding, the air conditioner poses a threat to the life of the user. Ignition of the unit is not excluded.
- Temperature changes can also cause breakdowns. For climatic zones characterized by instability of temperature indicators, the devices are made of certain materials that can withstand both heating to 100 ° C and cooling to -40 ° C without the presence of degradation of parameters, cracking, melting, loss of color, strength and other indicators . Metal parts are also manufactured taking into account the level of expansion from the heat of materials and have appropriate tolerances and fits . Such models have a high cost. Air conditioners for tropical and northern countries are produced taking into account the presence of stable temperature indicators. Their materials endure a cold and hot climate, but the range of capabilities of such an aggregate is not so wide.
- The negative effects of icicles, stones and household garbage, which damage the integrity of the unit, become the causes of malfunctions. Stucco molding, tiles or window cornices sometimes fall off old-style houses. Various items fall from the balconies.
Why the compressor failed
Why doesn't the air conditioning compressor turn on? The failure in his work is characterized by noise and oil smudges on the body. Often the part does not turn on due to refrigerant leakage. Loss of substance is provoked by cracks in the body, malfunctions in the trunk, as well as the wear of the rubber gasket.
The air conditioning compressor does not turn on even when the tensioning belt is loosened, the shaft seal is worn out, the power supply is damaged, and there is dirt.
The compressor is called the "heart" of the system. This is an expensive item. Its construction is very complicated. Damage to the compressor requires serious troubleshooting.
If the part is noisy, then this indicates a malfunction in its system or wear of the coupling bearing. The noises from the bearing and compressor are different. The first is heard regardless of compressor operation. The second appears when the air conditioner is turned on.
With the timely detection of a malfunction, the compressor can be repaired. In the event of a component jamming, it must be replaced.
Before installing a new compressor, it is recommended to figure out what caused the old one to break. In the event that wear products enter the system, there is a high probability that they will clog a new part.
Flush the entire system with a special fluid before installing the compressor. It would be better to dismantle each system individually. Without this, purification will not be of high quality.
Fault diagnosis in electromagnetic clutch
Compressor jamming may also be caused by jamming of its electromagnetic clutch. Despite the fact that it is tightly pressed to the pulley, its functionality may be impaired. In a similar situation, it can be assumed that the piston is defective. The air conditioner clutch does not turn on when there is insufficient lubrication.
Its repair includes checking for oil in the rotor or pressure plate. There must be no leakage in the clutch bearing .
Cause of fan failure
Sometimes the air conditioner fan does not turn on. Why is he out of order? Some failures are displayed by the indoor unit panel. It displays a specific code.
In the event of a fan malfunction, the air conditioner does not turn on at full power. The unit only lasts a few seconds and then shuts off again. There is an explanation for this:
- damaged fan blades;
- his motor burned out;
- the capacitor of the electric motor of the part has failed.
In all three cases, the fan must be completely replaced.
Condensation or water in the air conditioner
This is a fairly common problem. Most often, such a violation is caused by the operation of the unit at low temperatures for cooling.
Be careful as the water that appears on the indoor unit can turn into an ice plug. If it appeared, then the air conditioner does not turn on until warming.
Indoor unit filters clogged
Often the filters on the indoor unit become clogged. This may affect the operation of the unit negatively. The main symptom of this malfunction is the low level of room cooling.
This problem is inherent in large cities in which factories and factories operate. Poor quality carpets also adversely affect the condition of the filters, as the smallest fibers clog them, interfering with optimal functioning.
Neighborhood with other electrical appliances
Do not forget that the air conditioner can break down when located next to other units. When choosing a device with the power level suitable for you, keep in mind that the load on it increases significantly when you turn on the gas stove or electrical appliances.
What to do in case of malfunction
Why doesn't the air conditioner turn on? The reasons are not always clear. Only an experienced master will open them. If there is a serious breakdown, it is recommended to consult a specialist.
Self-intervention will only exacerbate the matter. Restoring climate technology requires some knowledge. Moreover, in most cases, without special equipment, the problem is insoluble.
Advice
To avoid damage to the air conditioner, it is recommended to adhere to a number of certain rules:
- Once every three weeks, clean the filters. This procedure does not require time and effort. Rinse the parts, dry them and replace them. If the filters have not been cleaned for a long period of time, this will lead to overheating of the unit and, as a consequence, to a malfunction in its operation.
- Call a specialist at least once a year and a half to prophylactically clean the unit.
- Observe the level of freon content. A leak is considered normal with an indicator of 6 to 8% per year. Such numbers are optimal. Loss of substance will be observed even if the installation of the air conditioner was carried out at a professional level. The main reason is the connection of the pipe by flaring. To maintain the required volume of freon, preliminary refueling is carried out. The frequency of replenishment of the lost gas is carried out in accordance with the intensity of use of the unit. Usually it is carried out 1-2 times a year.
- Carefully monitor the operation of the device in the winter. It is not recommended to be included at air temperatures below 0 ° C. In particular, this should not be done if the air conditioner is not equipped with a unit designed for all seasons. An icy drain pipe causes condensation obstruction. As a result, after 30 minutes of operation, water will flow into the room.
- Do not put different objects on the air conditioner, do not cover it with a curtain. Such actions are strictly prohibited. When ventilating the room, turn off the device. Drafts contribute to the creation of an additional load on the unit, which can lead to jamming.
- Do not place the device at maximum cold or heat. Heating and cooling are gradual, and extreme operation will overload the air conditioner.