Midea s air conditioner does not heat and the external unit does not start

There are many reasons why the outdoor unit does not run: 1. In refrigeration mode, after the room reaches the set temperature of the air conditioner, the outdoor unit stops running, which is manifested as the air conditioner blowing natural wind. When the air conditioner detects that the room temperature is higher than the set temperature, the outdoor unit of the air conditioner runs for refrigeration again; This is a normal phenomenon (2) the outdoor unit has poor heat dissipation 3, and it may be that the voltage is unstable during the peak period of electricity consumption.

Or the electricity consumption of the electricity consumer suddenly increases, resulting in a decrease in voltage, the air conditioner will restart protectively, start, shut down, etc., the outdoor unit does not run may be the communication failure of the indoor unit and the outdoor unit, 4, this situation is generally caused by the user's unstable power supply, or the indoor evaporator high temperature protection or low temperature protection; During the peak period of electricity consumption, the power is insufficient, and the Midea air conditioner is a powerful electrical appliance, so it is difficult to start; Of course, it cannot be ruled out that the air conditioner itself is faulty. It is recommended to unplug the power supply, wait for a while, and turn the air conditioner back on. If the problem cannot be solved, it is recommended to call Midea's after-sales service **4008899315 let it deal with it!

If you still have questions, you are welcome to ask questions to the company in the United States; I wish you a smooth work and a happy life!

Dude, it's really hard for you to have such a problem, the machine doesn't start a lot of factors, you don't check that it's useless for you to ask, no matter how big the problem is, you need to eliminate the problem, if you still can't determine it in the end, call ** to the manufacturer, let them send a technician to come and see, it is impossible to have such a big god to help you solve the problem.

It's too general, the motherboard, internal and external temperature sensing heads, compressors, and poor capacitors can all cause not to start.

You need to call Midea's customer service and arrange service personnel to come to repair, which cannot be solved by yourself.

First of all, see if there is a problem with the manipulation.

I am looking to see if there is a power supply to the press.

Look at the pressurizer capacitance.

Or see if forced refrigeration can be activated.

The motherboard is broken or the remote control is wrong.

1. It takes three to five minutes for the external unit to produce air after heating, which is the process of preheating and the process of preventing cold air. The wind that blows at the beginning of the cooling process is a natural wind, and it is a wind without temperature, so you also need to wait.

2. It may be that the filter screen and condenser have not been cleaned for a long time.

You can try to clean it to see if there is any wind, if it is not windy, it may be a problem with the wind wheel, remove the window cover, find the fan wheel under the air supply outlet, and turn it by hand to see if it can be easily rotated.

If it doesn't work, it means that something is stuck in it or the motor bearing is short of oil, and if it can be rotated, the capacitor may be broken. If you can't handle it yourself, it is recommended to contact a professional maintenance personnel for maintenance.

Summary. The reason why the Midea air conditioner heating outside does not turn:

1. The pressure protection switch is faulty.

2. Too much refrigerant causes protective shutdown.

3. The ambient temperature is too high, resulting in system protection. The ambient temperature is too high, the sun is shining without shade, and the outdoor unit is poorly ventilated, which will cause the compressor to overheat in summer, resulting in the air conditioner not rotating.

4. Pay attention to whether the outdoor unit has working sound, including the outdoor unit fan and compressor. If the outdoor unit fan is shipped.

turn, it means that the control circuit is basically normal. At this time, you should observe whether the compressor starts or not, and if the compressor does not start, you should check whether the power supply is normal.

5 If there is no problem with the above checks, then you need to check whether the capacitor is damaged and whether the overload protector is short-circuited.

6. Sensor failure. Use a multimeter to measure the resistance value of the outdoor unit coil unit sensor, if the sensor resistance value deviates from the normal value or there is an open circuit or short circuit fault, the sensor needs to be replaced.

What is the reason why the external unit does not work when the Midea air conditioner is heating.

Dear, I have seen your question, I am in Wuzhen to answer your questions Mr. Su, I am sorting out the information, please wait for me for five minutes, I will immediately ask you a question, I wish you a happy life, smooth work, good health, all the best, rent careless wishes.

The reason why the heating unit of Midea air conditioner does not rotate: 1. The pressure protection switch is faulty. 2. Too much refrigerant causes the protective Sun Dadong to shut down.

3. The ambient temperature is too high, resulting in system protection. The ambient temperature is too high, the sun is shining without shade, and the outdoor unit is poorly ventilated, which will cause the compressor to overheat in summer, resulting in the air conditioner not rotating. 4. Pay attention to whether the outdoor unit has working sound, including the outdoor unit fan and compressor.

If the outdoor unit fan is running, the control circuit is basically normal. At this time, you should observe whether the compressor starts or not, and if the compressor does not start, you should check whether the power supply is normal. 5 If there is no problem with the above checks, then you need to check whether the capacitor is damaged and whether the overload protector is short-circuited.

6. Sensor failure. If the resistance value of the sensor deviates from the normal branch impulse value or there is an open circuit or short circuit fault, the sensor needs to be replaced.

Because the machine judges the communication fault, the fault range is large, and the machine, the external unit or the external connection line are possible, therefore, prepare to open the right end cover of the outdoor unit first, and prepare to measure the voltage on the communication line and the neutral line. It was measured to swing more than 14V, so it is estimated to be an outdoor problem.

After the technician removed the top cover of the outdoor unit, it was found that the 315V power indicator in the upper left corner of the outdoor board was not lit, so the 315V DC voltage on the electric board was measured, and it was found that it was very low, only 30 40V, and then the 220V input voltage on the outdoor terminal post was normal, so it was checked that the rectifier bridge stack opener of the outdoor unit was damaged.

After replacing the rectifier bridge stack, the indoor and outdoor units are working, and the refrigeration is normal. When I was about to install the top cover of the outer unit, I suddenly heard the discharge sound of "beep" on the outer unit, so I disassembled the front frame of the outdoor unit, listened carefully to the sound**, and finally found that the reactor discharged the shell. After replacing the reactor, the whole machine works normally.

This may be because the machine is judged to be a communication failure, the scope of the communication fault is still relatively large, the mechanical machinery or the external machine contact this is possible, therefore, I think your first step, is to first open the muscle stem, and then prepare to measure the voltage of the communication line and the listening scene, has been measured, in the position of more than 14 volts and swing, so it is estimated that it is an outdoor problem, under the command of the technician, remove the outdoor top cover, Found that the 115 volt power indicator light under the foot of the outdoor table is not lit, measure the 315 volt DC decompression on the pad, if it is found to be very low 30 to 4, if it is found to be very low, 30 to 40 no longer test the 220 volt input on the external terminal post Yaya is normal, therefore, check that the rectifier bridge of the outdoor unit is stacked up, the road machine is damaged, I will think that this fritter will work normally on the future generations of Wan's bacteria, and in preparation to install the top cover of the ten thousand machines, if the leader headset has the sound of pipa, the cheap god praise will start to remember the front across the front carefully listen to the training, The man finally found that if it is healthy qi for the other party's eyes, the essence of the health device, then he will work often, of course, at present, it is like this, maybe for these reasons, if this method is tried, you can't find anything, think about it yourself!

The principle of air conditioning refrigeration, it is to compress the gaseous freon into a high temperature, high pressure gaseous fluorine amount, and then send it to the condenser, that is, the outdoor unit becomes a liquid freon at room temperature and high pressure after heat dissipation, so the outdoor unit blows out the Leon Golden Retriever muscle evaporator, which will increase the space of the century, the pressure will decrease, and the liquid freon will be vaporized, and it will be sunk into Fuyang at too low temperature, so as to absorb a large amount of heat The evaporator will carry the indoor fan, and the air will be strong and the air will be blown through by evaporation. Therefore, the test machine blows out the water vapor in the cold air air, if it encounters a cold evaporator, it will condense into a water pipe of water dripping, and the water flowing out will come out of the water, and then other benefits will return to the compressor to continue compression, continue to circulate the heat, he will have a part called four, when it is hot, there will be a component called four-way valve, which is the flow direction of the condenser and the evaporator, which is the opposite of refrigeration, so when heating, the outdoor blowing is cold air, and the test machine is blowing hot air, In fact, it is the liquid liquefaction used in junior high school physics and chemistry, that is, there is a gas that is used as a teacher to remove heat and gasification and plan, that is, from liquid to other absorption of heat, this is the most basic principle of air conditioning and refrigeration.

When we use air conditioners, we inevitably encounter all kinds of faults. Air conditioner not starting is one of the very common faults, and there are many reasons why the air conditioner won't start can be found more easily after understanding these reasons. The reason for the failure of the air conditioner in your own home, let's talk to you in detail about the specific reasons why the air conditioner cannot be started.

The power supply is not connected or the socket of the power lead is not in good contact, and the diameter of the power lead is thin or aging. The power supply voltage is low. Fixed-frequency air conditioner operating voltage:

187V, voltage change range: 198-242V, inverter air conditioner operating voltage: 156V, voltage change range:

176-264V, it is recommended to install a voltage regulator at home.

Delay protection. In order to protect the life of the press, the control circuit of the air conditioner computer board is designed with a protection circuit, and the press is delayed for 3 minutes before running. Prevent heating and cooling.

During the heating operation of the air conditioner, when the temperature of the coil unit of the indoor unit is lower than a certain value, the internal unit does not operate, and generally after 3 to 5 minutes of preheating, the internal unit starts to work. The air conditioner computer program is messed up and the machine doesn't work right away. Functional lock protection.

Some brands and models have a child lock function, if you lock the model and cannot do anything, please refer to the manual to remove it.

There are garbled characters or pins on the screen. Press the reset button to release or the battery is low. The temperature cannot be displayed.

In air supply or automatic mode, the remote control cannot display the temperature. If the connector is damaged or cannot work properly due to moisture, check the transmission status of the remote control signal. Point your digital camera (or mobile phone) at the transmitter port of the remote control and press any button on the remote control to see if an infrared signal is emitted.

The remote control mode is incorrect or the temperature setting does not meet the operating conditions. When cooling, the setting temperature should be lower than the indoor temperature, and when heating, the setting temperature should be higher than the indoor temperature. If the battery of the remote control is low, the distance of the remote control will be shortened or the remote control will not be possible.

It is recommended to remove the remote control battery when the air conditioner is not in use, and reinstall or replace it when in use.

The above is what is the reason why Midea's air conditioner cannot work, and now everyone knows it. There are many reasons why Midea's air conditioner doesn't work. First of all, check whether the remote control is good, whether there is electricity, confirm that there is no problem with the remote control, it is the problem of the air conditioner, and ask the air conditioner maintenance master to help repair it.

1. During the heating process, it takes 3 to 5 minutes for the external machine to expel the air. This time it's the process of preheating and preventing cold air. And the wind at the beginning of refrigeration is natural wind, and there is no temperature, so you also need to wait.

2. It may be that the filter screen and condenser have not been cleaned for a long time. You can try wiping them clean and see if there's air. If there is no air, it may be a problem with the air wheel.

Remove the window cover, find the fan wheel under the air supply outlet, and turn it by hand to see if it is easy to rotate. If not, it means something is stuck in it or the motor bearing is short of oil. If it can rotate, the capacitor may break.

Refrigeration Is the external unit started?

There is also how many degrees of heating you adjust the outdoor unit can not afford, it should be higher than the indoor temperature, I generally put it at 30 degrees (room temperature is about 20 degrees) when heating, the external machine does not turn, the internal machine will not turn.

If you adjust it to 30 degrees Celsius to refrigerate, the outside machine turns (the indoor temperature is about 20 degrees), which is that the temperature sensing head is broken, sometimes the heating can not be turned on, and the temperature sensing probe may be broken.

1. If it is a single-cooling air conditioner, it will not start.

Looking at the model of the air conditioner, KFR is a cooling and heating air conditioner, and KF is a single cooling air conditioner.

The other is to see whether the external machine has a four-way valve or whether the internal machine has a four-way valve control;

2. The indoor ambient temperature is lower than the set temperature, and the air conditioner will not heat up.

Possible causes:

1. Your air conditioner does not have a heating function, but the remote control does, because the remote control is generally shared by various models, and it does not work if you modulate the heat.

2. Your air conditioner has a heating function, but the room temperature is higher than the temperature you set, so of course the air conditioner will not start heating.

The temperature is not set, and the indoor temperature is higher than the temperature you set.