Common problems with Split/AC Units | DamaTajhiz HVAC Group

As you know, Split AC Units are commonly Split AC Units widely used for independent and sufficient heating and cooling of the environment; but like other equipment, they can have problems. In this article, we are going to examine common problems in the use of Split AC Units and splits. Please stay with us.

Exhaustion or lack of refrigerant is a common failure in split AC units

Refrigerant absorbs heat from the internal environment and expels it through the condenser coils as it passes through the evaporator coils. Refrigerant gas therefore plays an important role in refrigeration systems such as Split AC Units and split systems. For this reason, if the refrigerant gas is reduced due to reasons such as leakage, partial blockage in the connection pipe or completion during the annual charge, the Split AC Unit will have problems such as insufficient cooling, freezing of the internal panel and its coils, and wind blowing. warm from the Split AC Unit and will face an increase in electricity consumption and resultant costs.

Therefore, if there is a refrigerant gas leak, it should be detected and repaired using a sensor or soap foam or, if necessary, the Split AC Unit should be recharged; these operations are carried out by authorized air conditioning service centres.

Filter contamination is a common problem with split AC Units

The air (especially in metropolitan areas) contains a lot of airborne particles and harmful substances, and the Split AC Unit filter absorbs part of them. Over time, absorbing these particles will block the filter and prevent cool air from circulating. It can also cause other problems in the Split AC Unit unit, such as the coil freezing or water droplets being thrown from the inner plate (evaporator) to the outside. For this reason, the filters should be removed from the panel at regular intervals, at least every 3 months, and cleaned in warm water or replaced as necessary.

One of the most common problems with Split AC Units is dirty coils

The condenser in the Split AC Unit is responsible for the transfer of heat from the indoor air to the outdoor air. Over time, particles such as dust, dirt, etc. accumulate on the surface of the condenser coil and form a layer. This layer acts as insulation on the surface of the capacitor, reducing its heat exchange with the outside world. As a result of this phenomenon, the cooling rate of the Split AC Unit system is reduced and the air conditioning system does not cool down.

Therefore, the prevention of this problem should be a priority, which can be achieved by regular cleaning of the condenser coil with compressed air. However, if the coil surface is heavily contaminated and cannot be cleaned, an authorised service technician is required to wash and clean it with special chemicals.

Hot wind is a common problem in air conditioning

Split AC Unit has many applicants among other air conditioning units due to its proper and independent cooling. However, one of the most common problems in gas and Split AC Units can be the reduction of cooling and hot air blowing out of the unit. This problem can occur for many reasons, which are as follows:

• Accumulation of dirt in the filter
• Condensing and evaporating coils are not clean
• Leakage or loss of refrigerant gas in the unit
• Improper installation of the Split AC Unit internal or external panel
• Faulty compressor in the appliance
• Faulty fan
• Faulty thermostat
• Defective electronic board or condenser
• Extremely high air temperature

Watering is a common air conditioning problem

One of the most common problems with Split AC Unit units is water leaks and splashes, as you can see from drops or water falling from the inside of the unit. Leaking or splashing from the inner panel of the Split AC Unit unit can occur for the following reasons:

• The drain pipe is out of place
• Damage to the inner plate tray
• Defect in the drain pump
• Blocked drain pan outlet of the Split AC Unit
• Blockage of the drain pipe
• Freezing (due to malfunction of the refrigeration cycle or lack of refrigerant)
• The Split AC Unit filter is not clean

Incorrect fan operation is a common problem with air conditioning systems

The internal fan of the Split AC Unit unit is responsible for transferring the cool (or warm) air produced by the unit to the passenger compartment. It goes without saying that if the fan of the Split AC Unit/conditioning unit develops a problem or fails for any reason, the transfer of cold (or warm) air to the interior may become inefficient or the unit may fail to start at all. In addition, if the fan is damaged or unbalanced, the inside of the unit could become very noisy, disturbing the occupants.

One of the most common problems with air conditioning systems is the spread of unpleasant odours

Another common problem encountered with Split AC Units is that of emitting an unpleasant odour. In such a case, the cause is identified and remedied under the supervision of a qualified service engineer. Some of the reasons for an unpleasant odour coming from Split AC Units and air splitters include

• Leakage of refrigerant gas
• The coils are not clean
• The split A/C filter is not clean
• Melting of plastic parts in the air conditioner
• Compressor heating up from running the A/C unit and split for a long time
• Problems with appliance wiring

Compressor failure is a common air conditioning problem

One of the most common problems with Split AC Units is improper operation and compressor failure; because the compressor is the most important and central part of the Split AC Unit, and if it is damaged, the operation of the whole unit will stop, requiring a lot of money to spend. Air conditioner and split compressor failure have the following warning signs, and if you see any of them, you should contact the authorised Split AC Unit service centre to check and repair:

• Insufficient cooling of the desired room

• The air conditioner switches off spontaneously and does not switch on again.

• Hearing an unusual noise from the unit

• Vibration of the Split AC Unit when it is switched on

• Hot wind blowing from the unit

Note: It should be noted that any of the following symptoms may occur for other reasons, such as failure of the electronic board, sensor, etc., which will be identified by an expert.

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Coil freezing is one of the most common problems in Split AC Units

Freeze-up or icing is one of the most common problems in Split AC Unit systems, which occurs on the internal coil plate, external coil plate and connecting tubes, whether the air conditioner is in cooling or heating mode. Evaporator and condenser freezing can occur for:

• High humidity
• The air conditioner and split filter unclean
• Lack of refrigerant gas in the unit
• Blockage in the refrigerant path
• Internal fan or blower panel failure
• Split compressor running for a long time (for any reason, such as sensor failure or unit electronic problems)
• Electronic board failure

The problem of freezing and formation of frost on the external panel (heating mode in winter), air conditioning and split can also be caused by the following:

• Lack of refrigerant gas
• Faulty condenser fan
• The condenser is not clean
• Damage to the defrosting system of the Split AC Unit
• Air circulation path in condenser blocked by a foreign object
• Failure of the condenser sensor
• Solenoid valve malfunction

If this problem occurs, it is necessary to contact the Split AC Unit service centre so that the problem can be solved by authorised service personnel.

Spontaneous shutdown of the most common problem in air conditioning systems

One of the most common problems of the Split AC Unit is its spontaneous shutdown, which can occur for the following reasons

• The filter of the Split AC Unit is not clean
• A faulty thermostat or its inappropriate location (near heat sources).
• The unit's condenser coil is not clean
• Selection of the wrong capacity with the environment (more than necessary)
• Split AC Unit compressor defect
• Leakage of refrigerant gas from the air conditioner
• Freezing of the internal coil plate (evaporator) of the Split AC Unit
• Air conditioner compressor overload
• Sensor failure
• Condenser and electronic board failure
• Blocked drain pipe
• Failure of the start relay
• As you have seen, the spontaneous shutdown of the air conditioner and split system can occur for many reasons; for this reason, in case of this problem, it is necessary not to rely on your own experience and to contact the authorised air conditioner and split system service centre.

As you have seen, the spontaneous shutdown of the air conditioner and split system can occur for many reasons; for this reason, in case of this problem, it is necessary not to rely on your own experience and to contact the authorised air conditioner and split system service centre.

In this article we have tried to talk about common problems in air conditioning and split systems; we hope that the presented content was useful and practical to you. For more information, call +98 21 88822550 during office hours and get advice from the air conditioning experts of DamaTajhiz HVAC Group...

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