What is the fault of Midea air conditioner E3 and how to solve it

Midea inverter hang-up displays the causes and solutions of E3; 1.If the filter screen of the outdoor unit of the Midea air conditioner is dirty, resulting in abnormal heat dissipation, it will lead to the failure of the Midea air conditioner E3. At this time, it is necessary to clean the filter of the outdoor unit, so that the problem of E3 display can be solved.

2.If the wiring in the Midea air conditioner is damaged, or the fan speed is not enough, this will lead to E3 failure. It is necessary to contact the maintenance personnel to replace the bad wire in time, find out the cause of the slow fan speed and solve it, so that the problem of the E3 display can be solved.

3.If the air conditioner shows that the E3 is faulty as soon as you turn on the Midea, you can check whether the voltage is normal. If it is not normal, it is recommended to turn on the air conditioner or install a pressure regulator, so that the fault problem can be solved.

Midea air conditioner appeared E3, may have low pressure protection, then there are certain problems in the refrigeration system of the air conditioner, you can add refrigerant inside the air conditioner, and check whether the air conditioner is lacking in refrigerant, if there is a lack of situation, to increase the appropriate amount. Maintenance method: 1. After the air conditioner is used for a period of time, there is more dust inside, so it should be cleaned regularly, so that the air conditioner can be used for a long time and there is no small fault.

2. Check the circuit board and low-voltage switch of the air conditioner to see if there is a fault, which can be detected with a multimeter. If the resistance value is 0, then it means that the low-voltage switch is faulty, and it should be repaired immediately. 3. When setting the temperature of the air conditioner, it should not be set too high or too low.

It is best to adjust it to the right temperature, so that the power is not wasted, and the human body is particularly comfortable. When using the air conditioning socket, other high-power electrical appliances can not be plugged in the socket, otherwise the voltage of the air conditioner will be insufficient, so that the refrigeration effect will be affected to a certain extent.

Midea's air conditioner starts to show fault **E3, i.e. overvoltage and undervoltage protection. Check if the AC voltage is too high or too low. Repair according to the actual situation to solve the problem of Midea's air conditioning display E3.

1. Determine whether the ambient temperature is too low.

2. Short the LPP plug on the main control board and the neutral line N on the motherboard. If the VTH is working properly, you can be sure that there is no problem with the main board or display board of the VTH. The fault occurs on the connection wires, plug-in connectors, or low-voltage switches between the indoor unit and the outdoor unit.

Midea air conditioner common faults**:1. E1 system high-voltage protection.

2. E2 internal machine anti-freeze protection.

3. E3 system low-voltage protection.

4. E4 compressor exhaust protection.

5. E5 low-voltage over-current protection.

The troubleshooting method of Midea air conditioner E3 is as follows: air conditioner inner unit hair dryer, fan line connector, internal machine motherboard, capacitor capacity.

1. Flip the air dryer in the air conditioner to see if it is stuck by foreign objects, if there is an E3 fault after removing the foreign body** is solved.

2. Check whether the fan line joint of the beam bend in the air conditioner has poor contact or damage, this situation will make the air conditioner appear E3 fault display, reconnect the wind flushing machine line, replace the damaged line, if it is the fan ball of the inner machine, just replace a loose slag and give a new one.

3. If there is an E3 fault**, you can check whether the main board of the internal unit of the air conditioner can have power supply to the fan, if it cannot supply power, you need to replace it with a new internal motherboard to solve the problem.

4. If the capacitance capacity of the internal fan is abnormal, it will also lead to the failure of the Midea air conditioner display**e3. Replace the problematic capacitor and the fault can be rectified.

The role of air conditioning:

Air conditioner refers to the equipment that uses artificial means to regulate and control the temperature, humidity, flow rate and other parameters of the ambient air in the building or structure.

Air conditioning generally includes cold source heat source equipment, cold and hot medium transmission and distribution system, terminal device and other major parts and other auxiliary equipment. It mainly includes refrigeration hosts, pumps, fans and piping systems. The terminal device is responsible for using the cold and heat from the transmission and distribution to specifically treat the air state and make the air parameters of the target environment meet certain requirements.

Air conditioning is an indispensable part of modern life, air conditioning provides people with coolness and warmth, but at the same time, air conditioning is always on is also easy to cause diseases, such as "air conditioning disease", etc., need to be used with caution.

The main forms of air conditioning are divided into: cabinet air conditioning, hanging air conditioning, water air conditioning, window air conditioning (half indoor and half outdoor), ** air conditioning, one-to-two air conditioning (one outdoor unit controls two indoor units at the same time) and other forms.

Midea air conditioner shows that the E3 is the low pressure protection of the compressor. First, check whether the ambient temperature is too low, and secondly, determine whether the phenomenon is a system fault or a control fault. Here's how to judge:

First connect the LPP plug on the main control board with the neutral line N on the motherboard, if the indoor unit is running normally, it can be determined that the motherboard or display board of the indoor unit is normal, then the fault is in the indoor and outdoor unit connection wire, plug connector or outdoor unit low-voltage switch. Connect the cable and plug of the external unit, adjust the multimeter to the ohm file, and then connect the meter pen to the unplugged LPP protection line, and connect the other meter pen to the zero line N, if the limit is 0, the fault is on the low-voltage switch, otherwise it is a line problem. The pressure gauge can tell if the system is leaking or clogged.

This answer is applicable to Midea KY-15 N7Y-PHA and Midea KYR-35 N1Y-PD2 brand air conditioner models.

Hello dear <>, E3 fault** can indicate a variety of faults, the following are some possible situations and how to deal with rolling reeds: 1Capacitance aging:

Check the service life of the capacitor to see if it needs to be replaced2Air-slip buried circuit board fault: Check whether the circuit board is connected and wired normally, if there is damage, the circuit board needs to be replaced 3

Compressor failure: Check whether there is abnormal noise or abnormal temperature during the operation of the air conditioner, and confirm whether the compressor needs to be replaced 4Refrigerant leakage:

As the use of the air conditioner increases, parts such as pipes and valves may deteriorate and cause leaks, so it is necessary to find the leakage point and replace the damaged parts 5Damaged sensor: Check the temperature sensor or other sensors to see if they need to be replaced These are the causes that can cause the E3 error**, and the specific treatment needs to be determined according to the specific fault.