There are more than a dozen air conditioner malfunctions, that require diagnosis, because to say exactly, what happened, quite difficult. The fact, что некоторые симптомы при неполадках разных исполнительных элементов выглядят одинаково. 
For the average user, any unstable operation of a split system - a solid mystery. To quickly and efficiently fix the air conditioning, required experience and qualifications of the master, so the repair is best to book in professional service center. specialized workshops specialists have the necessary skills and have at their disposal the necessary tools and equipment, that allows you to accurately determine the cause of failure.
How to diagnose a breakdown
Diagnosis - an important part of repairing of air conditioners. Depending on, the behavior of climatic equipment, check in a given situation may be different. But in any case, the technique is considered for mechanical damage and clogging air filters.
If it's all right, checked by the inner and outer mounting blocks, and the quality of clamps system compound, through which Freon circulates. refrigerant leakage - the most common fault. Since the split-line systems are connected by mechanical means, errors may occur during installation, due to which the entire freon can emerge in a few days. Due to leakage of refrigerant often fails compressor, so that delay the dressing can not be. Replacing the motor - the most expensive type of repair.
Internal and external modules are checked for dirt, the presence of which increases the load on the actuators, which leads to premature wear. Furthermore hydraulic and mechanical component of air conditioners are equipped with electrical, which also requires verification. Failure can leave capacitors, blower motor, motor, breakage may occur in the wiring. Diagnosis in this case reduces to the verification of resistance in certain areas using a multimeter or ohmmeter.
Check Control
One of the tools the master is auto-diagnostic system. Modern air conditioners are equipped with lamps, which are associated with the program will automatically check. In the event of certain failure indicator reports a problem flashing. Based on the frequency of the on / off light bulb, you can speed up the search for the cause of the problem.
So, one flash indicates the thermistor faulty indoor unit, twice - about a similar issue with an external module. If the lamp is blinked three times - is a high probability, that included both heating and cooling mode, four - including the compressor overload protection program (should check, Whether working properly protection mode). Five times - violation interaction between the indoor and outdoor units of split-system (check cable), six - increasing electricity consumption outdoor unit (verification subject power transistors.
signs of damage
As already mentioned, there are more than a dozen major breakdowns, faced master service centers. Consider the typical signs of malfunctions.
Condensation on the indoor unit
Since the cooling air is condensed moisture therefrom, It must be provided with its outlet. It is responsible for this system of pipes, through which water comes out. If the tube or drain sump clogged, the liquid will drip from the indoor unit to the floor. It is necessary to clean or purge the pipe tray.
Insufficient cooling facilities
reasons, the air conditioner cools the bad, may be not only to his failure. The first step is to check the settings. maybe, set too high temperatures or dry mode. Insufficient cooling may also be associated with malfunctions of the compressor of the external unit, check that may be performed only by a specialist.
Extraneous noise during operation
Crackling and other extraneous sounds typically associated with clogging or breakage of the outdoor unit compressor. It is urgent to carry out checks, that in the future do not have to change a burned-out unit. Also, noise may be due to blockage or malfunction of the indoor unit of the fan impeller, Clean or change that has to master.
Triggering electrical machines when the
Plugs can be sputtered due to a short circuit in the cable, leading from the shield, or incorrect connection of the wires to the terminals. In the first case it is necessary to change the wiring, Second - connect the air conditioner properly. it happens, that the machine is activated due to a malfunction of the control unit of a split system. The wizard verifies the payment and decides, whether it can be repaired or need to be replaced.