Midea s 3 HP fixed speed air conditioner outdoor unit is noisy

Causes and Methods:

1. There are sundries in the outer machine.

When the household air conditioning system is running, the debris inside the outdoor unit will rub against each other and produce noise, which will reduce the life of the air conditioner in the long run.

2. The installation is not standardized.

Sometimes, when installing the air conditioning system, due to the limited level of the construction team, the level of the external unit bracket, the uneven force of the screws of the outdoor unit or the unreasonable installation position of the outdoor unit are caused by problems such as the level of the external unit support, the uneven force of the outdoor unit screws or the unreasonable installation position of the outdoor unit, resulting in the collision of various parts of the system during operation and the resulting noise.

3. Compressor noise.

For the first air conditioning system, the compressor is one of the most important components and the "heart" of the normal operation of the whole system. The quality of the compressor directly affects the operation effect of the air conditioner, and the compressor is also the main reason for the noise generated by the external machine.

4. Poor assembly of outdoor fan motor or axial fan blade.

Remove the axial fan blade of the external unit for testing, if the noise is eliminated, replace the axial fan blade, otherwise replace the outdoor fan motor.

5. The fixing screws of the outdoor casing are loose.

If the fixing screws of the outdoor unit are loose, and the external unit will resonate with the bracket when it runs, check and fasten the internal parts of the outdoor unit and the fixing screws of the casing in place.

There are many reasons for the noise of the outdoor unit of the air conditioner, the judgment is more complicated, it requires the patient inspection and screening of the repairer, and some specific situations need to be inspected and tested to make a conclusion.

1) The outdoor unit bracket device is not horizontal.

2) The force on the outer bottom screw is uneven.

3) The location of the outdoor unit is inappropriate.

4. Poor assembly of outdoor fan motor or axial fan blade.

5. The fixing screws of the outdoor casing are loose.

2. Midea air conditioner outdoor unit noisy solution:

1) The bracket device of the outdoor unit is not horizontal, or the fixing screws of the combined bracket are not fastened in place and deformed, which will form the uneven foot of the outdoor unit.

2) Loosen the foot fixing screw of the outdoor unit from the beginning, tighten the foot screws with a wrench, and tighten them evenly together, it is strictly forbidden to tighten one of the screws in place first, so that the fixed force will be uneven.

3) First of all, it is necessary to find out that the wall structure, such as precast concrete, and the indoor side is mostly a working place or a bedroom, a study, etc., which is relatively hollow, and the indoor gyration surround sound will occur, which belongs to the building structure and the interior decoration of the house, and the phenomenon is an objective factor condition.

4) Remove the axial fan blade of the external machine for testing, if the noise is eliminated, that is, replace the axial fan blade.

5) If the fixing screws of the outdoor unit are loose, and the external unit will resonate with the bracket when it runs, then check and fasten the internal parts of the outdoor unit and the fixing screws of the casing in place.

There are several reasons why Midea air conditioners are noisy:

The first reason is that the main unit of the air conditioner is not installed correctly, and the imbalance causes the sound of resonance when the compressor starts.

The second reason is that if the compressor of the air conditioner has quality problems or the compressor of the air conditioner is loose, the compressor will produce noise in the process of working.

The third reason is that the exhaust fan motor of the air conditioner loses oil, so there will be a lot of noise when it is running.

The reasons for the high noise of the outdoor unit of Midea air conditioner may be as follows:

Improper installation of the outdoor unit: If the outdoor unit is installed in a noise-sensitive area, such as a bedroom, conference room, etc., the noise will be more obvious.

Vibration of the outdoor unit: The outdoor unit will produce vibration when it is working, and if the fixing bolts of the outdoor unit are loose or the installation is unstable, it will cause the vibration to intensify, resulting in greater noise.

Failure of the outdoor unit: If the fan, compressor or other components of the outdoor unit fail, it will cause increased noise.

Improper cleaning of the outdoor unit: If the outdoor unit is not cleaned for a long time, it will cause dust and debris to accumulate inside the machine, which will affect the normal operation of the machine and produce noise.

If the outdoor unit of Midea air conditioner is too noisy, it is recommended that you contact a professional air conditioner maintenance personnel for inspection and maintenance. At the same time, when installing air conditioners, you should choose a suitable location and avoid installing outdoor units in noise-sensitive areas.

If the air conditioner you bought has been running for a period of time, the noise is particularly loud, generally speaking, there are the following situations, the first situation is that the screw is not tightened when installing, it has loose places, the second situation is that the components inside your external machine are likely to be his screws off, or loose, third, that is to say that the bracket of the external machine is unbalanced, that is to say, one side is high and the other is low, this situation will also occur, fourth, it is likely that the bearing of the external machine is not good, So at this time, we should carefully observe the cause of the best to investigate? You have to know what to do.

If you have just bought a new air conditioner that has only been used for a few days, it cannot be the reason for the air conditioner, generally speaking, the screws or nuts that fix the air conditioner are not tightened.

That's the steel bracket that holds the air conditioner in place, not on a horizontal line. As we often say, one is high and the other is low. Or that the steel bracket is not flat.

1. If the air volume of the air conditioner is adjusted to a particularly large amount, the natural sound of the indoor unit of the air conditioner is also relatively loud when the air is out, so you can appropriately adjust the air volume of the air conditioner to a little smaller, and then you will find that the noise that makes us irritable disappears.

2. The noise of the indoor unit of the air conditioner is likely to be the phenomenon of the blades being stuck, if the noise heard is a creaking sound, it generally means that there is indeed a problem with the air conditioning blades, and it is necessary to do lubrication treatment in time, and then when the air conditioner is started, it will be found that the problem of loud noise has disappeared.

3. When considering the reason for the noise of the indoor unit of the air conditioner, the installation of the indoor unit of the air conditioner should be taken into account, if the installation of the indoor unit is not stable, the air conditioner will emit shaking noise after running for a period of time, and if it is not dealt with in time, the noise will become louder and louder, so when solving the noise problem, it is necessary to check the stability of the indoor unit, and if there is indeed a problem, it is necessary to adjust it.

4. The service life of the air conditioner is relatively long, if you pay attention to maintenance, you may also extend the service life of the air conditioner, but at this time the air conditioner is already very "old", and the compressor is also very difficult to run, so the indoor unit will also make relatively large noise when the air conditioner is running.

There may be several reasons why the outdoor unit of Midea's 3 HP fixed-speed air conditioner is noisy:

The outdoor unit is placed improperly and comes into contact with the support surface of unstable spring combustion, resulting in large vibration noise.

The fan is unbalanced, dirty, worn, etc., resulting in a large fan noise.

There may be a problem with the compressor of the outdoor unit or the fan of the indoor unit, resulting in high noise.

The air conditioning duct is closed and vibrates loudly, resulting in an increase in the noise of the outdoor unit.

Therefore, it is recommended that you first check whether the outdoor unit of the air conditioner is placed in a stable position, and check whether the fan, compressor and air conditioning duct are normal. If the above inspections are normal, it is recommended that you contact the air conditioner manufacturer or maintenance personnel for further inspection and treatment.

The noise of the outdoor unit of Midea 3 HP fixed-speed air conditioner may be caused by the following reasons:

1.Equipment quality problems: The noise level of the outdoor unit of the Midea air conditioner itself may be high, or the equipment may have manufacturing defects.

2.Installation location problem: The outdoor unit of the air conditioner is installed in an unreasonable location, such as close to the window or door of the house, or installed on the open-air balcony and other locations that are prone to noise.

3.Environmental problems of using the air conditioner: The ambient noise around the outdoor unit of the air conditioner is large, such as traffic noise, factory noise, etc., which will also have an impact on the noise of the outdoor unit of the air conditioner.

It is recommended that users pay attention to the brand and quality when purchasing air conditioners, and at the same time choose a reasonable location when installing air conditioners to avoid noise affecting themselves and surrounding residents. If you have any problems, you can contact the manufacturer or after-sales service department to solve them.

The reason for the noise of the Midea air conditioner host.

1. The main noise of the air conditioner is the air outlet of the air conditioner, when the air conditioner turns on the wind speed, the noise value of the air conditioner will of course slowly increase, which is the air conditioner.

2. Loosening of the air conditioning panel Loosening of the air conditioning panel. When the air conditioner is used for a long time, the panel of the air conditioner is easy to loosen due to various reasons, so that the vibration generated by the air conditioner during operation will make the panels rub against each other, resulting in noise.

3. The installation of the indoor unit of the air conditioner: The installation of the indoor unit of the air conditioner and the connection of the outdoor unit also affect the timing, use and noise of the air conditioner. If the installation of the indoor unit is not stable enough, when the outdoor unit is running, the copper pipe is connected to the indoor unit, and the indoor unit is not stable enough, it will be affected by the compressor, resulting in the resonance of the indoor unit.

4. Air conditioning compressor Air conditioning compressor This is also one of the best air conditioning noise, the noise value of the compressor is too large, which will also affect the use and rest of our normal users.

The reason for the noise of the external machine:

1: The working frequency is unstable due to voltage instability, and the external machine has frequent up-and-down noise.

2: Due to the installation problems of the installer, the bracket is not installed against the wall, the screws are not fixed firmly, and the quality of the bracket is poor, and the 4 fixing points are not in a plane, resulting in the machine not being fixed.

3: Due to the quality of the air conditioner, the noise adjustment caused by the vibration of the casing or the collision of the pipeline, the vibration of the general casing is more, and the compressor is stuffed nearby, and the effect is good.

4: The humming sound generated by the resonance between the working frequency of the air conditioner and the wall.

5: For individual models, short circuit of reactor, tilting of compressor fastening bolts, aging of compressor damping pads, compressor bottom shelling, loose four-way valve coil, fan motor, fan blade, etc., resulting in large noise of the external machine. It can be replaced or re-reinforced.

The internal machine is noisy:

1: There is a friction sound in the internal machine [the internal fan rotates and rubs against other objects, and it is easier to find the fault part.]

2: AC sound [the "hum" sound caused by the operation of the fan caused by the poor shock absorbing pad of the general fan and the capacitance of the fan].

3: Throttling sound [half or slight plugging of heat exchanger, lack of fluorine, slight blockage at the input end of the capillary, and disadvantage of connecting pipe].

Midea and Gree have been used for a long time, and Gree's noise is louder.

The main reason for the noise of Gree's external unit is that the installation of the air conditioner is not in place, and this problem is mainly because the installation of the installation worker's technique or technology is not in place, which leads to the installation of the air conditioner, which will lead to the louder sound of the air conditioner; The bracket of the air conditioner is not stable enough, this problem is mainly because the bracket of the installation of the air conditioner is not stable, or there is a loose situation, you have to find a professional maintenance worker to deal with it.

Or the wind speed of the air conditioner is too large, this problem is mainly because the wind speed is the largest when the air conditioner is started, and the change of the wind speed is changed with the change of the compressor, as long as the low frequency operation will reduce the noise.

Air Conditioner Purchase Guide:

1. Choose energy efficiency.

Level 1 means that the power saving of the product has reached the international advanced level, and the energy consumption is the lowest; Level 2 indicates that the product is relatively power-saving; Level 3 indicates that the energy efficiency of the product is the average level of the Chinese market. The smaller the energy efficiency value, the smaller the power consumption, and the better the performance and quality of the product.

Suggestion: Priority should be given to the first level of energy efficiency, followed by the second level. However, Level 1 energy efficiency** is higher than Level 2 energy efficiency, so you can choose according to your needs.

2. Choose a way of working.

Fixed-frequency air conditioner: refers to the air conditioner in which the compressor uses a fixed-frequency motor to run at a fixed speed. When the room temperature reaches the set value, the air conditioner stops running; If the room temperature exceeds a certain range of the set value, the compressor will be restarted.

Inverter air conditioner: mainly includes DC inverter and full DC inverter air conditioner. Among them, "full DC inverter" means that the air conditioning compressor and the internal and external fans are driven by DC inverter motors.

Suggestion: It is generally not recommended to use fixed-frequency air conditioners in bedrooms, and try to choose full DC inverter air conditioners, especially first-class energy-efficient full-DC inverter air conditioners.

The above content refers to the early Zhaokao Zhihu - whether the noise of the air conditioner is loud or the sound of Gree.