What is the reason why the Midea external unit does not start, and the Midea air conditioner does no

Are you talking about the air conditioner not starting, it's best to find a professional air conditioner maintenance person to take a look, let him check the specific reason, he generally can't solve it.

The reasons why the air conditioner compressor does not turn on are:

Clause. 1. See if there is a problem with the setting of the controller;

Clause. 2. Check whether the output of the compressor of the control board has electricity;

Clause. 3. Check whether there is a fault in the control loop of the compressor, such as high and low voltage protection and overheating relay protection;

Clause. 4. Check whether there is any problem with the compressor, such as coil breaking, etc.

If the compressor is single-phase, you should also pay attention to whether there is a problem with the capacitance of the compressor.

Giving Midea's after-sales service can be solved.

1. It may be the reason for the voltage: check whether the power supply of the external unit is electric or whether the voltage reaches the rated voltage. If it is not the cause of low voltage, please check whether the indoor and outdoor units are connected correctly, whether the wires are aging, and whether the motherboard of the indoor unit is wired correctly, otherwise replace the motherboard of the internal unit.

2. If the electric buzzer does not sound, please check the transformer.

3. If the external unit has a voltage of 220V, check whether the red indicator light on the motherboard of the external unit is on, if the indicator light is not on, check whether the external unit connection line is loose, whether there is a direct voltage of about 300V between the power module P+ and N-, if not, check the reactor, rectifier bridge and wiring. If there is, but the indicator light of the motherboard of the external unit is not lit, first check whether the signal connection cables from the power module to the motherboard (a total of 10) are loose or poorly contacted, and then replace the power module, when replacing the module, the heat dissipation paste must be evenly coated between the radiator and the module.

Ad. Wanjia specializes in air conditioner installation, maintenance, installation and quick door-to-door.

4. If the outdoor unit has a power supply, the red indicator light is on, and the external unit does not start, you can check the communication between the internal unit and the external unit, (check method: press the "test" button once after turning on the computer, and observe the indicator light of the indoor unit), any kind of light flashing is normal, otherwise there is a communication problem; Check whether the connecting wire of the internal and external machine is a special flat wire, and replace it in time if not, so as to avoid similar situations again. If the communication is normal, please check whether the indoor and outdoor temperature sensor packs are open or short circuited or the resistance value is abnormal, and whether the overload protector port is connected.

If the above two methods cannot solve the problem, replace the outdoor controller.

5. If the air conditioner is turned on for about 10 minutes and stops and cannot be started, please check whether the indoor pipe temperature sensor is open; If the machine is started again after starting, and the external fan is not started, check whether the indoor and outdoor temperature sensing heads are short-circuited.

Causes

1. The capacitor of the external unit is damaged and does not start.

2. The compressor fails to start.

3. Circuit board failure.

Air conditioning maintenance during normal hours1. Remove debris from the vent to ensure proper ventilation. Observe whether the outdoor rack is loose, and clean the outdoor ventilation grille for foreign objects. At the same time, keep the vents unobstructed.

2. Clean the surface of indoor and outdoor heat exchangers to improve the efficiency of heat exchangers. When cleaning the indoor heat exchanger, you should carefully remove the panel, scrub it with a soft rag, and use a small brush to gently scrub the heat exchanger of the internal machine, so as to achieve the purpose of removing dust and harmful accumulation of multiplying germs. However, it should be noted that since the heat sink is a thin aluminum material, it is easy to deform after being stressed, so it should be carefully brushed.

It takes three to five minutes for the external unit to produce air during heating, which is the process of preheating and 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 air, if it does not come out of the wind, it may be a problem with the wind wheel, remove the window cover, find the wheel of the fan under the air supply outlet, and turn it by hand to see if it can be easily rotated, if it does not work, it means that something is stuck inside or the motor bearing is short of oil, if it can be rotated, it may be that the capacitor is broken.

Hello answer, happy to answer your questions. Don't be in a hurry when you encounter this situation, you must carefully check the connected lines first. Then it is inferred whether the device is faulty or not. If the equipment fails, it needs to be tested with an instrument.

However, at this time, it is recommended that you contact the after-sales service in time.

Question: My air conditioner is not heating.

Question: There is also wind in the refrigeration.

What should I do if I ask a question?

Question: There is also wind when the refrigeration is turned on - that is, the external machine does not rotate.

I told you that there is a fault and needs to be repaired.

You can't just talk to each other.

Check the line first, and if you find that there is a break in the line, you can consider connecting it.

To start or not to start the external unit of the air conditioner, first determine whether the external unit has power supply? If the external unit does not have the power supply, it is basically that the electricity is not connected to the external unit, and the main test is not good for the power supply of the internal machine? If the power supply is good, it may be that the power of the circuit board is not out, just check the circuit board!

In addition, if the external unit has electricity, it generally does not start for the following reasons:

1. The capacitor of the external unit is damaged and does not start.

2. The compressor fails to start.

3. If it is an external machine with a circuit board, the circuit board should also be checked.

The reason why the Midea air conditioner does not start the outdoor unit:

1. The reason for the voltage, the reason for the insufficient voltage is an important reason why the external unit does not start, if the air conditioner can not be turned on, it is necessary to check whether the external power supply is electric or whether the voltage reaches the rated voltage. If it is not the cause of low voltage, please check whether the indoor and outdoor units are connected correctly, whether the wires are aging, and whether the motherboard of the indoor unit is wired correctly, otherwise replace the motherboard of the internal unit.

2. If the indoor unit has not had a good refrigeration effect and slow cooling, and the outdoor unit does not start, it may be caused by the lack of fluorine in the air conditioner.

3. If your air conditioner is newly installed not long ago, it may be that the air in the system is not discharged when the air conditioner is installed, resulting in the phenomenon of ice blockage in the air conditioning system, resulting in an increase in the load of the compressor and an increase in temperature.

4. In addition, there may be communication problems, the power supply of the outdoor unit is normal, and the alarm of the red indicator light appears, at this time, it is necessary to check the communication between the internal unit of the air conditioner and the external unit.

If the Midea air conditioner does not start, there may be the following reasons:

1.Power supply problem: Check whether the power supply of the air conditioner is normal and whether there is a current output.

2.Fuse problem: Check whether the fuse of the air conditioner is damaged or blown.

3.Control panel problem: Check whether the control panel of the air conditioner is normal and whether there are burned out components.

4.Cleaning issues: Check whether the radiator of the air conditioner is clean and whether there is any dust or debris blockage.

5.Refrigerant problem: Check whether the refrigerant of the air conditioner is sufficient, and whether there is a high leakage of travel sensitivity.

If none of the above methods can solve the problem, it is recommended to contact a professional air conditioner maintenance personnel for maintenance and maintenance.

1. The voltage required by the air conditioner does not match the ** voltage, and the air conditioner cannot be turned on. 2. The connection between the external unit and the internal unit of the air conditioner is wrong, or the wire is replaced and the circuit board is faulty. 3. When the air conditioner is powered on, the electric buzzer does not respond to the sound, which may be due to the failure of the air conditioner's transformer device.

4. It may be that the connection line of the external unit is loose.

Suggested workaround:

1. Check whether the power supply of the external unit has electricity, and if there is electricity, you need to check whether the voltage matches the required rated voltage. Check the connections of the indoor and outdoor air conditioners for loose connections and make connections, check for damage to the circuit board, and if it does, the circuit board needs to be replaced.

2. Check the air conditioning transformer, and replace it when the transformer fails.

3. Check the reactor, as well as the rectifier bridge and wiring.

4. Replace the capacitor with a new one. Check the hail communication abnormality of the internal and external machine and call for repair. If the outdoor unit is powered on, the red indicator light is a little bright, but the external unit does not start working, it may be that there is a problem with the communication of the indoor and outdoor machines.

Reasons why the air conditioner does not start: the contactor is damaged, the voltage is too low, the circuit board is faulty, the condenser is faulty, and the freon is leaking.

1. The contactor is damaged: once the contactor is damaged, it will cause the indoor unit and the outdoor unit to be unable to connect, and the power supply will not be able to be transmitted to the external unit, which will cause the external unit to fail to operate normally.

2. The voltage is too low: In this case, the voltage is too low, which will cause the indoor unit and the outdoor unit to fail to start normally. The voltage of the fixed-frequency air conditioner must reach at least 180 volts, while the inverter air conditioner must reach 220 volts before it can be started.

If the voltage is too low or during the peak period of electricity consumption, the external unit cannot be started, this phenomenon will occur.

3. Circuit board failure: The circuit board of the air conditioner is a core rushing component, once the circuit board fails, it will first affect the operation of the air conditioner.

4. Condenser failure: Usually the air conditioner fails, most of which is caused by damage to the condenser, and the condenser itself contains a protection system.

5. Freon leakage: Freon is a limited amount, too much or too little will cause the air conditioner to fail to work normally, at this time, the self-protection system of the air conditioner will be turned on, and the self-protection will be automatically turned on and off through high-voltage protection for self-protection.

It is recommended to contact the after-sales door-to-door inspection.

Summary. 1. The main control switch has poor contact. 2. The coil has been damaged. 3. The screws between the motor of the fan and the fan blade are loose.

1. The main control switch has poor contact. 2. The coil has been damaged. 3. The screws between the motor of the fan and the fan blade are loose.

1. Poor contact of the main control switch: the switch needs to be replaced if the crude potato trillion resistance is too large or zero. 2. The coil has been damaged.

If the resistance of the electric bracelet is too large or zero, the coil needs to be replaced. 3. The screw between the motor of the fan and the fan blade is loose: the maintenance method at this time is to tighten the screw.

The role of the air conditioner: 1. The role of the compressor. A compressor pump that circulates heat from the endothermic section (evaporator) to the exothermic section (condenser).

When the temperature is too high, the compressor will automatically stop the cherry blossom ruler. 2. The role of outdoor heat exchanger. The refrigerant circulating inside the piping and the part of the air for heat exchange are made of copper pipes (U-pipes) and aluminum sheets.

Different from ordinary air conditioners, the copper pipe of the heat exchanger of the outdoor unit has a unique three-dimensional structure, which significantly increases the area of heat exchange.