The air conditioning in our home was beautiful! I haven t been refrigerated for less than two years!

It should be that the refrigerant is insufficient. There are roughly six situations in which the air conditioner is not refrigerated, and after understanding, it may be of great help to you. 1. Not enough freon (also known as "refrigerant" is not enough) This is a normal situation, generally appearing in the use of three to four years of old air conditioners, air conditioners are not completely not refrigerated, but the effect of refrigeration is not good enough, this is because the old air conditioners are using freon as refrigerant, and it will volatilize after a long time of use, in addition, it is not excluded that improper installation causes freon leakage and problems of the machine itself.

Solution: Supplementing refrigerant can solve the problem of air conditioning not cooling 2. The power supply voltage is not enough: the normal starting voltage of the air conditioner is 220V+-10%.

In China's power supply system with a phase voltage of 220V and a line voltage of 380V, almost all compressors above 200V can be started. At 180V or more, 70-80 can be started, and at 160V or more, only a few can be started. I've done it myself.

Below 160V there is almost no possibility of starting. As a rule of thumb, the compressor starting voltage is more reliable above 190V. 3. The power of the air conditioner is not enough

The general selection principle is: 150-250W square meters for cooling and 250-350W square meters for heating, in addition to comprehensive consideration of factors such as space height, level orientation, sealing performance and residential population. 4. The external ambient temperature is too high

There is a common saying: when the outdoor unit is in an environment above 43°, most air conditioners are difficult to transfer the heat from the indoor to the outside, resulting in no refrigeration. 5. The air conditioner is not cleaned and maintained for a long time

If you want the air conditioner to operate normally and not affect human health, but also to prolong the life as much as possible, obviously, it is impossible to leave it alone as soon as you buy it and install it. Because the outdoor unit is exposed to the outdoors, it is easy to absorb dust and debris, and if it is not cleaned for a long time, it will affect the heat dissipation performance of the machine, resulting in the reduction of the cooling effect of the air conditioner. The indoor unit is related to the health of the human body, and if it is not cleaned for a long time, it will breed bacteria, pollute the air, and make people sick.

6. The copper pipe connecting the indoor unit and the outdoor unit is too long: the maximum allowable length of the connecting pipe of the air conditioner shall not exceed 8 meters for one horse, 10 meters for the horse, and 15 meters for more than 2 horses. The height difference between indoor and outdoor units shall not exceed 5 meters.

The last case is rare, unless it is a special house type and there is no reservation to prevent the air conditioner from being outside, otherwise it is generally not necessary to use such a long connecting pipe. Dehumidification won't solve your problem. FYI, meanwhile.

There are many reasons for non-refrigeration, and the possible cause is the phenomenon of the compressor protection device tripping.

Compressor overload protection will trip, indicating that the system is too high-pressure, the pressure is too high, or the overheating current is too high.

Causes and elimination of high pressure and overheating:

1. Too much refrigerant. Reduce the refrigeration dose appropriately.

2. Poor heat dissipation. Check the condenser pipe for dirt and dirt and clean the condenser.

3. The pipeline system is blocked. Refer to the pressure gauge to judge, eliminate, and re-process systematically.

4. Dust and fouling of the evaporator or filter screen. The airflow becomes smaller, the system pressure and temperature are unstable, and the evaporator or filter is cleaned.

5. Fluoride deficiency is also possible. When there is a lack of fluorine, the compressor discharge temperature will overheat, causing the overheating load protection switch to trip.

The electrical problem is:

1. Control circuit board failure.

2. The temperature sensor is overloaded and the information is wrong.

3. The power supply wiring is loose and the contact is poor.

4. The starting capacitor or compressor starting coil is burned out.

The information is insufficient, it can only be analyzed in this way, and there are many other possibilities, it is recommended to find a professional maintenance personnel to check it.

Hope it can help you, satisfied. Thank you.

The fixed-frequency and fixed-frequency air conditioner may be an external unit, the compressor capacitance is problematic, and the compressor starting capacitance capacity is low, which will support this situation. There is a phenomenon of open welding.

Car air conditioner does not refrigerate reason 1: lack of refrigerant Car air conditioner will generally add refrigerant once every 2 or 3 years, and some cars even have a very large head of the car owner in a year, and the refrigerant in the car has flew? Why do you want to add it frequently, doesn't the air conditioner have a sealing device, and according to the air conditioner, refrigeration is a physical reaction and does not need too much loss of refrigerant, why is it gone. Affair.

Midea air conditioners sometimes cool and sometimes don't, what's going on? I think Midea fans are sometimes cold here, sometimes not cold. Then it may be the reason why the motherboard is broken.

Cause. 1. Failure of refrigeration circulation system and control system.

1. Insufficient refrigerant. A simple self-test can be performed to identify whether there is fluorine leakage.

2. Four-way valve gas crossing. Heat pump air conditioners switch between cooling and heating through a four-way valve. Some of the refrigerants that should be involved in heat exchange are directly returned to the return air pipe from the compressor outlet pipe at the four-way valve, resulting in a decrease in the refrigerant involved in heat exchange, and a decrease in heat exchange efficiency, resulting in insufficient heat production.

3. Check valve (also known as check valve) leakage. The difference between high and low pressure in the refrigeration system decreases, the temperature of the outdoor heat exchanger rises, and the heat obtained from the outside world decreases, resulting in insufficient heat production. When the pressure of the system is detected, it will be found that the pressure on the low pressure side rises, and the pressure difference between the high and low pressure decreases.

4. The defrosting controller is out of order. If the air conditioner cannot be transferred to the defrosting operation state in time, the evaporator will frost during heat pump heating, which will affect the heat exchange efficiency of air conditioner heating, resulting in insufficient heat production and even shutdown. It should be important to observe whether the defrosting temperature sensing device is misaligned, the contact is sticky or the contact is poor, the fan impeller is slippery or the air duct is blocked, and the solenoid valve or starting relay fails.

5. The auxiliary electric heating function fails. If the electric auxiliary heating control circuit or electric auxiliary heating equipment fails and cannot work normally, when the ambient temperature is relatively low, it will lead to insufficient heating of the air conditioner, or even no heating at all when the environment is bad.

6. For heat pump-assisted electric heating air conditioners, if the ambient temperature is high (above 5) and the heating is normal, while the ambient temperature is low (below 0) the heating is insufficient or not heated, it should be suspected that the electric auxiliary heating control circuit or electric auxiliary heating equipment is faulty, and these two parts should be checked during maintenance.

Reason 2: Improper use.

1. The air conditioner does not clean the filter screen in time after long-term use and the air circulation is blocked, which will affect the heating effect of the air conditioner to a certain extent.

2. If the dust scale of the evaporator and condenser is too thick, it will also reduce the heat exchange effect, resulting in a decrease in heating capacity and an increase in power consumption; The heating temperature is set too low.

3. The door cracks and wall holes in the air-conditioned room are not blocked, or the windows and doors are opened frequently, resulting in indoor heat loss, etc., which will inadvertently cause the reason for the weak heating of the air conditioner.

If your new Midea air conditioner neither cools nor heats, there may be several possible reasons:

Power Issues: Make sure the air conditioner is properly connected to the power source and powered on properly. Check that the socket and power cord are working properly, and try using other appliances to verify that the power supply is working properly.

Temperature setting issues: Check if the temperature setting of the air conditioner is correct. Make sure that the temperature is set within the desired range and that the cooling or heating mode is selected correctly.

Air Conditioner Mode Issue: Confirm that the air conditioner is in the correct working mode. If the air conditioner is set to:"Dehumidification"or"Air supply"mode, it may not cool or heat.

Remote Control Setup Issues: Check if the settings of the air conditioner's remote control are correct. Make sure the remote control's battery is working properly, the signal is sending properly, and it is paired with the air conditioner.

Air Filter Cleaning Issues: Check if the air filter of your aircon is clean. If the filter is clogged or too dirty, it may affect the air flow and cooling heating effect.

Failure or Damage: If all of the above checks are normal, but the air conditioner still fails to cool or heat, there may be other faults or damages. In this case, it is recommended that you contact Midea's after-sales service center or professional air conditioner maintenance personnel for inspection and repair.

Please note that the above are only some common possible causes, and the specific problems and solutions may vary depending on the specific aircon model and situation. If you are not sure how to deal with it or need professional help, please consult Midea's after-sales service or professional maintenance personnel. Wang stool.

There are two main reasons why air conditioners do not cool or heat.

First, the refrigerant of the air conditioner is not enough. Air conditioning is to compress air through the compressor, so as to increase the temperature, and then release air from the compressor to reduce the temperature, the process of releasing air to reduce the temperature requires the refrigerant to act as a refrigerant to transmit the cold air to the indoor unit. If the refrigerant of the air lead is insufficient, it will lead to a great reduction in the refrigeration performance of the air conditioner, and the solution is to fill the air conditioner with enough refrigerant to operate normally, refrigeration and heating.

Second, the compressor of the air conditioner is faulty. If the compressor fails, the air conditioner can not be refrigerated or heated, and it is necessary to find out the cause of the compressor failure and repair it, or replace the compressor, and then restore the normal refrigeration and heating function.

Newly purchased Midea air conditioner, generally the whole machine warranty scattered chiki tong 6 years, air conditioning quality problems, immediately contact the manufacturer's after-sales service personnel, door-to-door repair can be.

There are many reasons for this, mainly the following:

First, the system pipeline lacks fluorine.

The second is that the air conditioner is too dirty, which hinders ventilation.

The third is that the fan blades are too slow, which affects the temperature exchange.

Fourth, the system pipeline is blocked.

Fifth, the compressor itself has poor performance.

As a user, the first thing to do is to make sure that the inside and outside of the air conditioner are clean and clean regularly.

When the air conditioner is working in refrigeration, check the situation of the connecting pipe joint of the external unit, under normal circumstances, there should be condensation, and it should feel cold when touched by hand, especially the thin pipe.

If it does not feel cold, or if there is frost, it means that the air conditioner is faulty, and you should contact the after-sales service or ask a professional for maintenance.

The air conditioner is still functioning normally, so there are 2 common problems:

1. There is a leak of refrigerant, and the refrigerant needs to be replenished, which is the most common problem. The indoor unit of the air conditioner is an outdoor unit with two copper pipes connected, and the sealing of the two ends of the copper pipe is squeezed by the nut and the cup mouth, which may cause leakage if the force is too large or too small.

2. The heat exchanger of the indoor and outdoor machine has dust, etc., and the heat exchange is not good, so it needs to be cleaned up.

There may be a variety of reasons for this, it may be that the refrigerant is insufficient, or it may be that the heat sink of the external unit is too dirty, resulting in a decrease in heat exchange efficiency, and it is very likely that the cooling fan is stalled, and the maintenance master needs to come to check to confirm the fault.

The most intuitive and simple judgment of the refrigeration effect of air conditioning, 15 minutes after the refrigeration is turned on, look at the condensation of the high and low pressure pipes of the outdoor unit, and the best performance of the refrigeration effect: the high and low pressure valves are condensation.

The common reasons for poor air conditioning are as follows.

1. The indoor unit filter is dirty, or the ventilation is poor (relatively high furniture, fan speed) 2. The outdoor unit condenser is dirty, or the ventilation is poor, which affects the heat dissipation.

3. The refrigerant of the system is insufficient, and when you look at the outdoor unit after 15 minutes of refrigeration start-up, only the thin tube is cool or even frosty, and the thick tube is not cool.

Air conditioners are like this, the cooling effect will become lower after a long period of use, you can try to clean the air conditioner, or whether it is time to add fluoride.

This is probably related to the location of your air conditioner, which is not cooled due to poor heat dissipation during the day.

Then you can clean the heat dissipation network of the outdoor unit, and also observe the condenser of the indoor unit, whether there is frost, if there is frost, it means that the refrigerant is not enough, and it should be added.

Analysis of the causes of non-refrigeration and solutions:

1. Whether the air-conditioning compressor is working normally, whether the fan is started, check whether the air-conditioning compressor, the starting capacitor and the fan are damaged, and check and eliminate.

2. Whether the air conditioner radiator is dirty and blocked, resulting in the air conditioner not being able to dissipate heat in time, causing the air conditioner to suddenly not refrigerate the fault, and the air conditioner radiator should be cleaned regularly.

3. Detect whether the air-conditioning system is deficient in fluoride and add fluoride to the air-conditioner in time. Check the method, turn on the machine first, after the compressor of the air conditioner runs continuously for 30 minutes, touch the condensing louver fan behind the air conditioner with your hands, if the temperature is not cool or hot, and the compressor is still working, it is likely to be fluorine leakage and lack of fluorine.

4. Check whether the temperature sensor of the air conditioner is damaged, whether the remote control and receiver are out of order, which are all reasons for the sudden failure of the air conditioner, please check and rule it out.

For details, please call us or make an appointment for maintenance.

See if it's a problem with voltage or heat dissipation, and the new machine doesn't consider it bad.

There is a problem with the installation location or voltage.

It could be due to the following reasons:

1.The air conditioner filter needs to be cleaned or replaced, resulting in poor air flow and affecting the cooling effect.

2.The air inlet of the outdoor unit of the air conditioner is blocked, which affects the heat dissipation effect and leads to poor cooling effect. Brother Oak.

3.The electronic components of the indoor or outdoor unit of the air conditioner are faulty, resulting in unstable cooling effect.

4.The air-conditioning pipeline leaks and loses the fluorine, resulting in poor refrigeration effect. withered and.

It is recommended that you contact a professional aircon repairer for inspection and repair.