What s going on with Midea s air conditioner showing E7?

Midea inverter air conditioner has E7 failure**, indicating that Midea's inverter air conditioner indoor and outdoor communication is out of control, if it is a newly installed air conditioner, it may be that the connection line is wrong, resulting in Midea inverter air conditioner E7 failure**. 1. Check whether the outdoor fan line and feedback are off or damaged. If it falls off, it needs to be sure to be returned, and if it is damaged, it needs to be replaced.

2. If the outdoor fan does not rotate, the fan motor needs to be replaced. 3. If the outdoor fan can still operate, the outdoor substrate has been damaged. Replace the control circuit board.

Midea air conditioner common faults**maintenance: Midea's air conditioner failure**ee, which proves to be a compressor phase sequence reverse connection fault. This fault occurs because the connecting cable winds or pulls off the indoor fan hall feedback wire or display panel connection cable from the computer board after winding it during installation.

Solution: (1) After threading the connecting cable from the skeleton behind the indoor unit, be sure to check whether there is any entanglement with the inner fan motor line and display panel line (intertwined or the connecting line passes through the middle of the multi-core line) or press the above two lines, and try to separate them; (2) After confirming that there is no problem in the first step, after fixing the connecting cable on the terminal row of the indoor unit, when wrapping the connecting cable with the connecting tube, pay attention not to pull the connecting cable too tightly, let alone pull it vigorously first, so as to prevent the wiring harness in the indoor unit from being loosened or pulled off.

Midea's air conditioner displays E7, indicating that the speed of the outdoor fan is out of control and faulty. Check whether the outdoor fan line and feedback are off or damaged. If it falls off, it needs to be reconnected, and if it is damaged, it needs to be replaced.

If the outdoor fan does not rotate, the fan motor needs to be replaced. If the outdoor fan is still operating, the outdoor substrate is damaged. Replace the control circuit board.

Hello, if it is the U R series DC inverter hang-up, general inverter cabinet, Haier air conditioner KFR-60LW BPF, Haier air conditioner KFR-26 (35) GW V (DBPZXF) and other models have E7 faults**, then there may be the following possibilities:

1. Check whether the power supply voltage is too low.

2. Communication failure of the external machine.

3. Outdoor defrost sensor failure.

4. Protection from low power supply voltage.

5. Over-temperature and over-pressure protection of the press.

Maintenance method: 1. Check whether the power access mode of the internal and external units is the same, and whether the fire and neutral lines are installed correctly. It is also necessary to check whether the signal connection wires of the internal and external units correspond one-to-one, and cannot be misaligned.

2. Check the voltage, if the phase sequence is found to be opposite, the phase sequence of the external power cord can be changed.

The reason for the failure of the air conditioner shows the E7:

Check whether the outdoor fan line and feedback are off or damaged. If it falls off, it needs to be reconnected, and if it is damaged, it needs to be replaced.

If the outdoor fan does not rotate, the fan motor needs to be replaced.

If the outdoor fan is still operating, the outdoor substrate is damaged. Replace the control circuit board.

For example, when you press the "mode" button, the Midea air conditioner will cycle in the mode of "auto-refrigeration-dehumidification-air supply-heating-automatic". Press the "Sleep" button, the indoor unit will automatically switch to light wind operation, and the sleep mode will end after 8 hours ......Midea Air Conditioner Remote Control Description:1

Midea air conditioner remote control special button 1. "On and off" button: Press this button in the standby state of the air conditioner will automatically enter the running state, and press this button to enter the shutdown standby state after the air conditioner is turned on.

2. "Mode" button: After the air conditioner is turned on, press the mode button, and the mode will cycle in the mode of "auto-refrigeration-dehumidification-air supply-heating-automatic". 3. "Wind speed" button:

When this button is pressed, the wind speed of the indoor unit will cycle according to "Auto-Low Wind Speed-High Wind Speed-Auto". 4. "Wind Direction" key: The wind direction key can be used to select the wind direction.

5. "Swing wind" button: press the swing button, and the swing wind setting is divided into two modes: continuous swing and joging. 6. "Cooling" button:

After pressing, the set temperature drops by 1 degree, and the control range is mainly between 16 -31. 7. "Heating" button: After pressing, the set temperature will increase by 1 degree, and the control range is mainly between 16 -31 8. "Timing power-on" button:

After the time is set, as long as you press the timer power on button, its digital display area will display the last timed power on time. set the timed to run after booting up, and then press the timer start button again to cancel the timer start setting. 9. "Scheduled shutdown" button:

After the air conditioner time is set, press the "Scheduled Power Off" button when the air conditioner is turned on. At this point, the last set timer shutdown button will be displayed in the digital display area. The hour and minute are set, and the air conditioner will be turned off when the set time is reached.

10. "Sleep" button: press the sleep button, the remote control will display the sleep mode setting, the sleeping area will display the moon symbol, and the indoor unit will automatically switch to low wind operation, 8 hours later When the sleep mode ends, the sleep symbol is canceled, and the fan of the indoor unit will return to its original running speed. 2. How to set the time of Midea's air conditioner remote control 1. Press and hold the "Timer" button with your finger, and in the digital display area, "Clock" and other symbols flash once per second.

After the time digit stops flashing, it can enter the intermediate time adjustment state. 2.At this point, the time increases every hour each time you press the time button, and by pressing the minute button, the time increases by 10 minutes.

3. After the time is determined, use a round bar with a diameter of 1mm, press and hold the time button, the "clock" symbol will stop flashing, and the final time setting will be completed. 3. Midea air conditioner remote control auxiliary function 1. Air conditioner automatic cleaning function. When the remote control is turned off and the motherboard is in standby, press and hold the mode button for 3 seconds, and the remote control will send the automatic cleaning function**.

Running at the same time.

To start with the new air conditioner, if the new air conditioner has E7**, then it is likely that there is a problem with the connection line of the internal and external units, mainly check the connection of the power cord, whether the access mode of the zero line is consistent, especially whether the signal line corresponds correctly.

Midea inverter air conditioner E7 failure**, indicating that the Midea inverter air conditioner indoor and outdoor unit communication failure, if it is just installed air conditioner, it may be the wrong connection line, resulting in Midea inverter air conditioner E7 failure**, but if it is a section of air conditioner, it is the indoor unit or outdoor unit computer board communication circuit problem, resulting in Midea inverter air conditioner indoor unit display screen E7 failure**.

Maintenance method: Check whether the power access mode of the indoor and outdoor units is consistent, and the signal connection cables of the indoor and outdoor units should also be corresponding, and they cannot be connected and misplaced. If there is an E7 failure in the Midea inverter air conditioner that has been used for a while**, it means that the motherboard or main control circuit board of the internal machine is faulty, and in this case, you only need to replace the new circuit board or main control circuit board.

How to solve the Midea air conditioner failure E7.

Here's how to fix it:

1. Check whether the power access mode of the internal and external units is consistent, and the fire and neutral lines must be connected to the corresponding positions. In addition, check whether the signal connection lines of the internal and external units correspond one-to-one, and cannot be misaligned connections;

2. Check the voltage, if the phase sequence is reversed, the external power line can be replaced with the phase sequence, and do not change the wiring of the air conditioner itself;

3. After confirming that the voltage, phase sequence, and wiring are correct, the feedback line (double temperature machine is line 4, single cooler is line 2) and the zero line can be temporarily shorted at the indoor terminal, and the air conditioner is turned on to judge whether the electric control board is normal.

Midea air conditioners are also very common in our home life, if Midea air conditioners fail, we should also understand the reason. The reason for Midea's air conditioner failure**E7 is actually the failure of the outdoor fan speed out of control, so I suggest that you should immediately hand it over to a professional Midea air conditioning after-sales master to deal with this problem.

If there is an E7 failure on the Midea air conditioner**, it is possible that there is a communication failure of the air conditioner. Generally speaking, it is difficult to carry out your own maintenance of this kind of fault, and you need to find professional maintenance personnel to operate.

Questions. The outdoor phoenix machine does not rotate, and the outdoor motherboard has no voltage.

1. Check whether the outdoor fan line and feedback are off or damaged. If it falls off, it needs to be reconnected, and if it is damaged, it needs to be replaced. 2. If the outdoor fan does not rotate, the fan motor needs to be replaced.

3. If the outdoor fan can still operate, the outdoor substrate has been damaged. Replace the control circuit board. 4. It is recommended to contact professionals for maintenance.

Midea air conditioner display E7 indicates that the outdoor fan speed is out of control fault, the cause of the fault and elimination are as follows: check whether the outdoor fan line and feedback are off or damaged, the fall off needs to be really returned, and the damage needs to be replaced; If the outdoor fan does not rotate, the fan motor needs to be replaced. If the outdoor fan can still operate, but the outdoor substrate has been damaged, replace the control circuit substrate.

Take a look at whether it is an external temperature head disconnection.

1. Check whether the wiring of the humidifier and humidity sensor is normal; If there is a problem, replace or adjust;

2. Check whether the detection value of the humidity sensor is normal, if there is a problem, it is judged that the humidity sensor is faulty and needs to be adjusted;

3. Power on the humidifier directly, check whether the humidifier can be humidified normally, if it cannot work normally, it will be judged as a humidifier failure, and it needs to be adjusted accordingly;

4. If the humidity sensor and humidifier fault are eliminated, it can be judged to be a motherboard fault and needs to be replaced.

The display E7 is a faulty temperature sensor of the outdoor unit.

Solutions and Causes:

1. Check whether the humidifier and humidity sensor are connected to the state infiltration line normally; If there is a problem, replace or adjust;

2. Check whether the detection value of the humidity sensor is normal, if there is a problem, it is judged that the humidity sensor is faulty and needs to be adjusted;

3. Power on the humidifier directly, check whether the humidifier can be humidified normally, if it cannot work normally, it will be judged as a humidifier failure, and it needs to be adjusted accordingly;

4. If the humidity sensor and humidifier fault inspection are eliminated, it can be judged as a motherboard fault and needs to be replaced.

Midea's air conditioner display E7 usually indicates that the indoor temperature sensor is faulty, which may be caused by the following reasons:

1. Damage to the temperature sensor: The temperature sensor may be damaged or aged, resulting in the inability to detect the indoor temperature normally.

2. Connection problem of temperature sensor precursor: The connection of the temperature sensor may be loose or poorly contacted, resulting in the inability to detect the indoor temperature normally.

3. Control board failure: The air conditioning control board may malfunction, resulting in the inability to receive the signal of the temperature sensor normally.

If your Midea air conditioner shows e7, you can try the following methods to rule it out:

1. Power on again: You can power off the air conditioner, wait for a period of time and then power it back on again to see if it can solve the problem.

2. Check the connection of the temperature sensor: you can check whether the connection of the temperature sensor is loose or the contact is poor, and if there is a problem, you can replug and unplug the cable.

3. Replace the temperature sensor: If the temperature sensor is damaged or aging, you can contact the after-sales service center to replace it.

If the above methods do not solve the problem, it is recommended to contact the after-sales service center of Midea for further maintenance and maintenance.

Fault content: Outdoor fan speed out of control failure. Cause of failure and troubleshooting:

1. Check whether the outdoor fan line and feedback are off or damaged. If it falls off, it needs to be reconnected, and if it is damaged, it needs to be replaced.

2. If the outdoor fan does not rotate, the fan motor needs to be replaced.

3. If the outdoor fan can still operate, the outdoor substrate has been damaged. Replace the control circuit board.

Air-conditioning maintenance during special periods1 After the end of the use season. Before the air conditioner is suspended, the air conditioner can be set to the air supply state on a sunny day, and the air conditioner can be turned on for about half a day to make the air conditioner completely dry; At the same time, the dust filter, indoor unit, and outdoor unit should also be cleaned.

2 Before the start of the use season. Check that there are no obstacles in the air inlet and outlet of the indoor and outdoor units, so as not to reduce the working efficiency of the air conditioner; Install a dust filter to avoid damage to the machine or cause failure due to dust entering the machine; Wash the remote control with a dry cloth, not a glass cleaner or a cloth containing chemicals, and put two new batteries of the same model in after cleaning.

Air conditioner failure**E7 indicates an air conditioner overcurrent or phase sequence protection feedback failure.

If it is not a new machine, it can be judged to be over-current protection, and its over-current protection means that the voltage is low, and the compressor starting capacitor can be replaced, which can basically solve the problem.

At the back of the manual, there is generally an explanation for the error indication symbol, just check it directly.

Midea's air conditioner displays E7, indicating that the speed of the outdoor fan is out of control and faulty. It is recommended to check whether the outdoor fan line and feedback are off or damaged. If it falls off, it needs to be reconnected, and if it is damaged, it needs to be replaced.

If the outdoor fan does not rotate, the fan motor needs to be replaced. If the outdoor fan is still operating, the outdoor substrate is damaged. Replace the control circuit board.

Fault**: e7

Fault content: Outdoor fan speed out of control failure.

Cause of failure and troubleshooting:

1. Check whether the outdoor fan line and feedback are off or damaged. If it falls off, it needs to be reconnected, and if it is damaged, it needs to be replaced.

2. If the outdoor fan does not rotate, the fan motor needs to be replaced.

3. If the outdoor fan can still operate, the outdoor substrate has been damaged. Replace the control circuit board.

4. It is recommended to contact professionals for maintenance.