Why Is My Aircon Not Cold?

aircon not cold

Has it ever happened to you that your air conditioning unit starts to expel hot air instead of cooling your room as you expected? Although this problem can make you nervous especially during hot days in Malaysia, it is more common than you think. There are several reasons why this can occur. Keep reading, find out what the possible causes of aircon not cold and how to solve them.

1. Dirt in the air filter

dirt in air filter causing aircon not cold

The most common reason why any type of air conditioner stops cooling is due to dirty air filters. If this important piece is not cleaned frequently, it becomes clogged by the accumulation of dust and dirt, causing various problems such as blocking the passage of cold and warm air inside the ducts.

It also affects the thermostat and freezes the evaporator coil.

To solve this problem you should check the condition and integrity of the filter and change it as soon as possible, in case it is clogged.

You can also make it a habit to clean the aircon filter in a timely manner.

2. Incorrect thermostat setting

This could be the problem if your air conditioner starts by blowing out cold air and then warm air.

In this case, you have to change the thermostat setting to automatic mode, so that the fan works only when the air is cooling.

3. Dirty condenser

To understand this problem you must have an idea of how the air conditioning works. There is an indoor unit or evaporator that absorbs heat from the air and transfers it to the outdoor unit or condenser, which condenses the hot air into cold air.

If this outdoor unit is clogged, proper cooling of the air conditioning system will not occur, as debris and dirt will prevent heat transfer.

To solve this problem, you must clean the condenser leaving ample space for it to perform its function.

tenant feeling the heat because the aircond is not cold

4. Engine defects

If the fan motor is broken or defective, the condenser will not be able to dissipate heat, which will interfere with the cooling capacity of the air conditioning unit. Which requires the intervention of a professional for aircon repair service.

5. Low coolant level

The cooling system of the equipment requires a fluid refrigerant substance that adsorbs the heat from the surrounding air , the loss or absence of this substance causes that cooling does not occur.

If your air conditioner is not cooling, it could be because the refrigerant is leaking. This problem can be identified by strange sounds.

6. Compressor problems

A compressor manages the flow of refrigerant between the evaporator and the condenser, for this reason if it fails there can be no air cooling.

If this happens, it must be replaced and therefore, you must hire a professional.

To keep your air conditioning unit working properly, you should plan for regular maintenance.

It is recommended that it happens every 3 months, so you will take advantage of the efficiency and performance of your equipment.

If you do not do the required maintenance, your electricity bill can skyrocket and you will have to suffer from high temperatures.

Avoid overpaying and even having to buy new equipment and properly maintain the one you already have.

7. Outdoor fan blocked

bird nesting by outdoor aircon unit

Another reason why aircon not cold is because the outdoor fan is being blocked by some object. Thus, it is not allowed to rotate.

Check if the fan rotates correctly and make sure that nothing is blocking it. Sometimes, birds can fill the outdoor unit with sticks and grasses to build their nest.

As the bird sees your aircon being a free real estate, their house building project can hinder your aircon fan from turning.

8. Other possible faults why aircon not cold

More and more inverter air conditioner are being sold in the market.

These types of aircon are more complicated and sometimes the reason why aircon not cold is because of faults related to the electronic boards.

This can prove to be quite difficult for inexperienced people to determine and repair the air conditioner.

Hence, it is always advisable to contact professional aircon technicians to find out and solve the problem.

You can contact us at Sol Aircond Service and we will take care of the stress for you! We provide aircond service in Cyberjaya, Seri Kembangan, Puchong and anywhere in Selangor and Kuala Lumpur.

Categories: Blog


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