Why is the air conditioner not cold? The cause and how to fix it
Air conditioners are essential electronic devices in every home, office, school, etc. During use, the air conditioner may have some errors and malfunctions such as not cooling, loud noises, etc. to our living, studying and working. So why is the air conditioner not cold? How should it be handled? The following article will guide you to solve the above problem.
Causes and solutions to handle the air conditioner not cold
Air conditioners and air conditioners still work normally, but poor cooling capacity is quite common, warning many problems. This condition can be caused by many reasons, including:
The air conditioner runs without enough power or voltage overload
Overvoltage is one of the typical reasons why the air conditioner is not cold. Compared to rural areas, in big cities, this situation is less common, but in the hot season, high electricity consumption will lead to overload.
Overcrowding occurs, causing the air conditioner to not cool the room. In particular, using the air conditioner when the power is overloaded not only causes poor cooling performance but also reduces the life of the air conditioner.
Quick solution:
- Use a voltage meter to check your household current. Low voltage and not cold air conditioning are signs that an electrical overload is occurring.
- Use a voltage stabilizer to make the power supply more stable.
- Avoid using the air conditioner at peak times to limit the above situation.
The air conditioner is not cold due to poor hygiene
Air conditioning is not cold due to less hygiene and cleaning is one of the eternal problems that many families encounter. Parts such as indoor unit, filter mesh over a long period of use, not cleaned regularly will reduce the performance of the air conditioner.
Therefore, to ensure the ability to cool, homeowners need to clean the air conditioner regularly, periodically, at least once a year. During the cleaning process, you need to use specialized tools such as pressure hoses, etc. to ensure effective cleaning.
Quick solution:
- Remove the indoor unit cover, take out the filter, spray water to clean the filter. Reassemble the parts in the original order.
- In case the owner is too busy and does not have time to clean the air conditioner by himself, you can look to the service providers. Cleaning units with extensive professional experience and professional equipment are guaranteed to make you satisfied.
Turn on the wrong mode of the air conditioner
Turning on the wrong mode is one of the common reasons why the air conditioner is not cold. Depending on the brand and company, the cooling function will be designed and arranged differently.
However, usually, the deep cooling mode is usually designed with a snowflake shape with the word cool next to it. Therefore, if you want to use the cooling function, you just need to turn on this mode, wait for the room to gradually cool down and enjoy the cool and refreshing space.
Quick solution:
Check your family's air conditioner control to see if the modes have been adjusted correctly. In case it is hot outside, turning on the coldest mode Cool (snowflake shape) is the most reasonable choice, so that the room is cooled deeply and quickly.
Air conditioner leaking water
This is a phenomenon that often occurs in daily life. The cause of the above situation may be due to clogged drains, long-term use of water pipes.
Besides, it also does not exclude the possibility that the machine was initially installed incorrectly, causing the drainage to become slow. To know for sure the cause of this situation, you need to ask specialized units to check it so that there is a suitable solution.
Calculate the wrong capacity of the air conditioner for the room
Choosing to buy an air conditioner, homeowners need to choose a capacity suitable for the room's capacity to ensure maximum use of the product's performance as well as save energy. Accordingly, if the bedroom area is about 15m2, you should choose an air conditioner with a capacity of about 9000BTU.
With a larger and larger living room, an air conditioner with a capacity of more than 9000BTU will be a reasonable choice, ensuring the best cooling capacity.
Quick solution:
Choose an air conditioner with a capacity suitable for the area and volume of the rooms in your family. Here are some tips you can refer to.
- Room with an area of less than 15m2, choose an air conditioner with a capacity of about 9000 BTU.
- Room area from 16m2 to 22m2, choose an air conditioner with a capacity of about 12,000BTU.
- Room area from 23m2 to 30m2, choose an air conditioner with a capacity of 18,000BTU.
- Room area is larger than 31 m2, choose an air conditioner with a capacity of 24,000BTU.
In case the room has an even larger area, you can use a combination of multiple air conditioners to ensure the best cooling of the room.
The air conditioner is short of gas or out of gas
The new air conditioner has very good quality, the ability to cool quickly and deeply. However, after a long time of use, the outdoor unit is affected by weather factors such as sunshine and rain, causing the welds to leak gas and open. If the above situation takes place for a long time, it may cause the air conditioner to lack gas or run out of gas, affecting the cooling performance.
Quick solution:
- Use a pressure gauge to check if the gas in the tank is lacking and how much. If there is a shortage of gas, the owner needs an additional pump to ensure the cooling of the machine.
- Check welds and pipes for leaks or electrical leaks. If there is, it should be treated immediately by re-sealing the leak or replacing it with a new one.
To ensure safety, you should seek the help of service providers. In particular, a service provider with high expertise and specialized equipment will ensure that the repair is done quickly and with quality.
Air conditioner compressor not running
The compressor is an important part that affects the cooling of the air conditioner. If this part malfunctions, does not run, the air conditioner will not be able to cool. Here are some reasons why the air conditioner compressor is not running.
There is no power supply to the compressor.
The contactor does not close (Because the machine has a capacity of 1.5hp or more, there will be a contactor, when the current flows through the contactor does not close, no current will pass through the compressor).
Burning of the internal motor windings: This situation may cause the power CB to jump.
Tecmit failure: Tecmit (Relay) is a part that plays the role of protecting the air conditioner from short-circuiting and fire when electrical overload or unstable current occurs. This part is designed in such a way that when an overload current passes through the tecmit bimetal opens and, therefore, no current flows into the compressor.
Damaged circuit board: Damaged or damaged circuit board affects the operation and operation of the outdoor unit.
The control wire from the indoor unit to the outdoor unit is broken: This situation occurs, causing the hot tail to not be powered, so the compressor does not have electricity to operate.
Quick solution:
This is a complex situation that is difficult to handle. Therefore, to ensure safety, it is best to call the air conditioning repair service and units so that they can send technicians to check and repair.
