1. Ceiling Air Conditioner Running But Not Cooling
If your ceiling air conditioner continues to run but fails to provide cooling, it's likely experiencing a malfunction.
The causes for this situation may include:
- Extended usage without cleaning the air filter.
+ The outdoor fan blade isn't functioning, leading to poor air circulation.
+ The ceiling air conditioner's capacity is significantly smaller than the room's area.
The corresponding remedies for each cause are as follows:
+ Clean the machine filter and the entire unit regularly, 2-4 times per month.
+ Replace the fan blade or motor in the outdoor unit.
+ Purchase a ceiling air conditioner with a suitable capacity for the room's area.

2. Insufficient Refrigerant in Ceiling Air Conditioner
If your ceiling air conditioner has been running for about 20-30 minutes but you still don't feel cool air, it may be due to insufficient refrigerant. Since the operating efficiency of the air conditioner heavily relies on the amount of refrigerant, a lack of it will hinder the cooling process.
The reasons for the ceiling air conditioner lacking refrigerant may include:
+ Improper installation and maintenance of the air conditioner leading to leaks in the pipes, causing the gas to escape.
+ Poor-quality gas pipes resulting in leaks after prolonged use.
+ Failure to regularly and properly maintain the ceiling air conditioner.
+ Selecting an inappropriate air conditioner capacity for the room size forces the device to operate beyond its capacity, resulting in gas consumption.
Remedies:
+ Check the gas piping: If the pipes are punctured, deteriorated, or cracked, they need to be replaced.
+ If the gas piping is still intact, simply refill the gas.

3. Noisy Operation of Ceiling Air Conditioner
Ceiling air conditioners producing noise during operation significantly affect living and sleeping spaces, especially for families with young children, the elderly, or those with sleeping difficulties.
There are numerous reasons why a ceiling air conditioner produces noise during operation, including:
+ Malfunctioning compressor and fan system.
+ Prolonged usage causing the machine to deteriorate and generate loud noise.
+ Internal components colliding.
+ Improper air conditioner installation.
Remedies: In most cases, the reasons behind the noisy operation of a ceiling air conditioner are internal components. Therefore, if you lack expertise in refrigeration, it's best not to dismantle and repair it yourself as it may exacerbate the damage. The best course of action is to promptly contact a professional air conditioner repair team.

4. Failure of Outdoor Unit Fan Blockage
Indications of a failure in the outdoor unit fan blockage include: cold air blowing out but not cooling, copper pipes covered in frost, loud noises from the unit, continuous on/off faults...
The reasons for the outdoor unit fan blockage failure include:
+ Impact of the outdoor unit thermal relay: Weak or faulty outdoor unit fan, malfunctioning compressor motor, faulty capacitor.
+ Loss of power supply to the compressor in the outdoor unit: Due to a faulty relay switch, damaged circuit board, severed power cord connecting to the indoor unit.
+ Overloading causing motor circuitry failure, burning.
Remedies: Fixing this issue requires technical skills and knowledge of refrigeration. The best approach is to immediately contact a professional air conditioner repair team.

5. Noisy Operation of Compressor
The compressor of the ceiling air conditioner's outdoor unit running noisily can be due to several reasons such as:
+ Incorrect installation of the unit.
+ Foreign object obstruction or lack of lubrication in the unit's cooling fan.
+ Loose or fallen brackets, screws attached to the outdoor unit.
+ Accumulation of dust on the outdoor unit due to lack of regular cleaning.
Remedies:
+ Apply lubricating oil to the cooling fan, remove any obstructions if present.
+ Tighten loose screws.
+ Thoroughly clean the accumulated dust on the outdoor unit.
+ If you've tried the above methods but the outdoor compressor still runs loudly, you should seek assistance from professional technicians.
We hope this article has helped you understand the common issues with ceiling air conditioners along with their causes and detailed solutions. Thank you for reading, and don't forget to visit Mytour.vn every day for more useful information!
