Why can t the display screen of the Midea air conditioner be completely turned off R51D

This is normal、Can't be turned off.,Just use it like this.,Just like the TV remote control is.、It's just that it has a display.。 You don't need more than two batteries a year.

Key Description:19 air conditioner function keys: power key, air volume key, mode key, temperature + key, temperature- key, auto wind direction key, manual wind direction key, fast cooling key and fast hot key.

2.1 setting key: used to set ** or timer power on and off time or clock.

3.1 clock button: to set or adjust the clock.

4.2 timer on/off keys: timer power on button and timer power off button. It is used to adjust or cancel the timer power on and off time.

5.1 child lock key: used to lock** to prevent misoperation, so as not to change and lose.

The power supply is not unplugged, and the prompt light prompts the prompt function, so that you know that the power is not turned off, and the power is turned off, and it will be fine.

Is the air conditioner running dry and mildew-proof? The drying and mildew prevention function of some models is turned off in refrigeration, dehumidification, and automatic (refrigeration) modes, and the air conditioner continues to run in a breeze for 10 minutes (at this time, the dry and mildew prevention pattern is bright) to blow out the moisture in the evaporator, so as to prevent the evaporator from accumulating water and mildew, and blowing out odor gas. If you don't want to run this mode, you can turn it to heating or air supply mode when the machine is turned off.

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!

[What should I do if Midea's air conditioner doesn't turn on].

When we use air conditioning, we will inevitably encounter a variety of failures, air conditioning can not turn on is one of the very common faults, there are many reasons why the air conditioner can not turn on, we must understand these reasons before we can more easily find out, the reasons for the failure of air conditioning in our own home, the following is a specific introduction.

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

187V, voltage fluctuation range: 198-242V, starting voltage of inverter air conditioner: 156V, voltage fluctuation range:

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

Delay protection. In order to protect the life of the press, a protection circuit is designed in the control circuit of the air conditioner computer board, and the press is started after a delay of 3 minutes. Prevent heating and cold air.

When the air conditioner is heating, when the temperature of the indoor unit coil is lower than a certain value, the internal unit does not run, and generally after 3-5 minutes of preheating, the internal unit starts to work. The computer program of the air-conditioner is out of order, which makes the machine unable to carry out the scheduled work. Functional lock protection.

Some brands or models have a child lock function, if you are in lock mode and cannot perform any operation, you can refer to the manual to cancel.

The screen is garbled or frozen. Press the reset button to disarm, or the battery is low. The temperature is not displayed.

In air supply or automatic mode, the remote control does not display the temperature. If the receiving head is broken or damp and cannot work properly, check the transmission of the remote control signal. Use a digital camera (mobile phone is also available) to point at the transmitter port of the remote control, and press any button on the remote control to see if there is an infrared signal emitted.

The remote control mode is incorrect, or the temperature setting does not meet the conditions for powering on. When cooling, the set temperature should be less than the indoor temperature, and when heating, the set temperature should be greater than the indoor temperature. The battery of the remote control is low, which will cause the remote control distance to be short or impossible to remotely control.

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.

1.To see if the air conditioner is losing fluoride, you have to find a professional maintenance worker to test it with a meter, and the general air conditioner needs 4-5 pressures. Lose a few to make up for a few pressures, generally a pressure of 30 yuan.

2.See if the compressor is working, start the air conditioner, generally the indoor unit works first, and the outdoor unit starts to work in about 3 minutes, if it can't be started, it may be that the starting capacitor is burned, and you need to replace it with a new one.

3.If the capacitance is good and the fluorine is not lost, you have to see if the outdoor unit air conditioner is very dirty, because after the air conditioner is used for a period of time, a large amount of dust and dirt will accumulate on the filter, evaporator and air supply system, and a large number of bacteria and viruses will be produced. These harmful substances circulate indoors with the air, polluting the air, spreading diseases, and seriously endangering human health.

Dirt will reduce the refrigeration efficiency of the air conditioner, increase energy consumption, and shorten the service life of the air conditioner. Therefore, the air conditioner must be cleaned after a period of use or when it is shut down during the change of seasons.

One of the reasons why Midea's air conditioner does not heat up: freon is not enough (commonly known as "refrigerant" is not enough) This is a normal situation, and it generally appears in the old air conditioner that has been used for three to four years. Midea's air conditioner does not completely stop heating, but the heating effect has decreased.

This is because the old Midea air conditioners all use freon as a heating agent, which will volatilize after long-term use. Therefore, users only need to add a little to the regular air conditioning maintenance point. In addition, it is not excluded that improper installation can cause freon leakage and problems with the machine itself.

The second reason why Midea's air conditioner does not heat is that the power supply voltage is not enough.

The third reason why Midea's air conditioner does not heat is that the air conditioner power is not enough.

The fourth reason why Midea's air conditioner does not heat up: the external ambient temperature is too high.

It is possible that the compressor protection device trips off, but does not return.

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 whether the cooling fan is rotating, whether the condenser pipe is dirty, 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.

And the problem with the circuit 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 overload protector trips out and does not return.

There are many other reasons, it is recommended to find a professional or after-sales service to check in detail.