What is the situation of Midea air conditioner P4 and refrigeration is not very good 15

Take out the filter of the indoor unit and rinse it with clean water, then take off the outdoor unit and rinse it, mainly the fan and heat sink, rinse it clean, if it is an inverter, it is best to find a professional.

Take a good look at the instruction manual, there is a corresponding fault ** on it, just control the maintenance.

If there is a lack of fluorine, is the external fan turning, the internal filter is dirty, and the external heat sink is dirty.

It's best to call after-sales service to take a look.

Midea's inverter air conditioner shows that the fault of P4 is: the indoor evaporator protects the compressor, indicating that the compressor temperature of the indoor machine is too high or too low. This failure is usually due to a problem with the indoor evaporator.

When there is a P4 fault, check whether the temperature sensor is working normally, if it does not work normally, you can stop using the air conditioner first, cut off the power supply, and find professional personnel to come to the door for testing, repair or replace new parts.

Inverter air conditioner is to add an inverter to the structure of conventional air conditioner. The inverter is a control system used to control and adjust the speed of the compressor, so that it is always in the best speed state, so as to improve the energy efficiency ratio, and save energy 20 30 compared with the conventional air conditioner.

P0 continuous 4 times current protection.

The speed of the P1 indoor fan is out of control.

The P2 indoor panel and the switch board cannot communicate for 2 minutes.

P3 Indoor evaporator temperature sensor open circuit or short circuit.

P4 Indoor room temperature sensor open circuit or short circuit.

The P5 room fan temperature fuse is disconnected.

P6 zero-crossing detection fault.

The P7 model is selected incorrectly.

Midea air conditioner appears P4 is the indoor evaporator protection off the compressor (high or low temperature) for the following reasons:

1. Refrigerant leakage.

2. The vacuum treatment of the system is not accurate.

3. Poor capillary welding and blockage.

Solution: 1. Check whether the temperature sensor can really detect the temperature, you can use a thermometer to measure whether it is consistent with the temperature detected by the temperature sensor, if not, replace the sensor.

2. Check whether the temperature sensor cable is aging, and replace the cable if it is aging.

3. Use a multimeter to detect whether the temperature signal on the motherboard can be received, and there is no problem with the above 2 items, if you can't recommend replacing the motherboard.

Midea's air conditioner displays P4, which means that Midea's air conditioner has indoor evaporator protection. This situation is due to a malfunction in the sensor of Midea's air conditioner. Let's check the wires of the sensor to see if there is any aging, and if so, replace the wires with new ones.

However, when replacing new wires, you must turn off the power of the air conditioner to avoid electric shock.

Midea air conditioner is an air conditioning brand that is famous for being very comfortable to use, and the quality of the product is also very good, which can bring us good results. Although the quality of Midea air conditioners is good, it is inevitable that it will encounter failure problems when it is used for a long time, such as when there is a P4 failure, which often means that the sensor is faulty, which is a problem that affects the use of the problem, and it must be repaired in time.

If there are some faults in the air conditioner of the United States, I believe everyone is more worried, and we should all know about the specific faults. The appearance of P4 on the Midea air conditioner is the indoor evaporator protection off the compressor, this situation is generally due to the failure of the temperature sensor of the air conditioner, the role of the temperature sensor is still very critical, so you should immediately contact the after-sales master of the Midea air conditioner to deal with it, or replace the parts.

The air conditioner P4 is the indoor evaporator to protect the compressor (high or low temperature), and the cause of the failure may be the leakage of refrigerant, or the vacuum treatment of the system is not accurate, or it may be the poor plugging of the capillary welding. It is recommended to find a professional maintenance personnel to check it.

The meaning of the frequent failures of the above Midea air conditioners is: indoor evaporator protection (high or low temperature), compressor stoppage. This problem focuses on checking the temperature protection sensing of the indoor evaporator.

Utensil. Check whether the wiring between the sensor and the electric control board is firm and reliable, and adjust it if there is a problem.

P4: Indoor evaporator protection off the compressor (high or low temperature) means that Midea's air conditioner has indoor evaporator protection. This situation is due to a malfunction in the sensor of Midea's air conditioner.

Solution: 1. Check the wires of the sensor first to see if there is aging, and if so, replace the wires with new ones. When replacing new wires, be sure to turn off the power of the air conditioner to avoid electric shock.

2. Check whether the temperature sensor can really detect the temperature, you can use a thermometer to measure whether it is consistent with the temperature detected by the temperature sensor, if it is inconsistent, replace the sensor in time to solve the problem.

3. Check whether the temperature sensor cable is aging, if it is aging, please replace the cable.

The type of failure

1. Refrigeration system blockage: It often occurs at the capillary tube and filter drier, because these two places are the narrowest places in the system, and there are three common reasons for blockage: dirty blockage, ice blockage and welding blockage.

2. Refrigeration system leakage: the carrier of air conditioning refrigeration and heating is refrigerant, if the system leaks, the refrigerant leakage will be poor refrigeration or no refrigeration at all, and the leakage of the air conditioner is mainly concentrated in the welding head of the two devices, capillary welding, compressor suction and exhaust pipes, bell mouths, copper sodium cracks, connecting pipes, etc., to inspect the visual inspection first, focusing on the joints of the connecting pipe, the leakage generally has oil traces.

Midea air conditioning is still very good, air conditioner is an air conditioner (room air conditioner), regulating temperature, humidity, hanging air conditioner is a unit used to deal with air temperature changes in space areas (generally closed). Its function is to adjust the parameters such as temperature, humidity, cleanliness and air flow rate of the air in the room (or enclosed space or area) to meet the requirements of human comfort or process.

1. The air conditioner inverter hangs up and shows that P4 is a communication fault between the indoor motherboard and the display board or a dust removal reset fault; 2. The fixed-speed hang-up shows that P4 is a filter reset fault; 3. The fixed speed cabinet shows that P4 is an indoor and outdoor communication fault or an electrostatic precipitator fault; 4. The inverter cabinet shows that P4 is a communication fault between the indoor motherboard and the display board.

Midea air conditioner internal unit dust removal treatment method: 1, clean the filter, use a toothbrush, fine pen, wet wipes, etc. to clean the air outlet, fan roller impeller, and dirty parts of the evaporator after lifting the filter, remember not to cause damage. 2. After cleaning, it is best to pour a few cups of water along the evaporator, rinse the sink by the way, to prevent the residue and dirt from blocking the drainage pipe.

Midea air conditioner outdoor unit cleaning and dust removal method: 1, unplug the empty air conditioner power supply, connect a car wash water pipe, use tap water to rinse up and down, use a plastic bucket to wash water without conditions, prepare a brush with a handle (a few yuan a, a lot of hardware stores), brush the aluminum wings up and down while washing, remember not to deform the aluminum wings. 2. Don't doubt that the circuit will be wet, the outside unit of the air conditioner is fine in the wind and rain, but some air conditioners with poor quality and materials will rot quickly.

Midea's inverter air conditioner shows that the fault of P4 is: the indoor evaporator protects the compressor, indicating that the compressor of the indoor unit has the phenomenon that the temperature is too high or too low. This failure is usually due to a problem with the indoor evaporator.

When the P4 fails, check if the temperature sensor is working properly. If you can't, you can stop using the air conditioner, cut off the power, and call a professional to inspect, repair, or replace with new parts.

Inverter air conditioner is to add an inverter to the structure of conventional air conditioner. The inverter is a control system used to control and regulate the speed of the compressor, so that it is always in the optimal speed state, so as to improve the energy efficiency ratio (20% 30% energy saving compared with conventional air conditioners).

Midea air conditioner shows P4 is an air conditioner fault problem, which is determined according to the type of air conditioner:

1. The air conditioner inverter hangs up and shows that P4 is a communication fault between the indoor motherboard and the display board or a dust removal reset fault;

2. The fixed-speed hang-up shows that P4 is a filter reset fault;

3. The fixed speed cabinet shows that P4 is an indoor and outdoor communication fault or an electrostatic precipitator fault;

4. The inverter cabinet shows that P4 is a communication fault between the indoor motherboard and the display board.

Midea air conditioner display P4 If it is an indoor evaporator protection problem, it is generally caused by the failure of the air conditioner's sensor. At this time, the wires of the sensor should be checked to see if there is any aging. If it is a phenomenon of aging, replace the wire with a new one.

Also check the cable of the temperature sensor, and replace it with a new cable if there is aging. You can also check the temperature sensor to see if it can detect the temperature, and you can use body temperature to measure the temperature of the temperature sensor.

P4 error** usually indicates that the outdoor unit's compressor is overloaded for clearance protection. This may be due to one of the following reasons:

1.There is not enough or too much refrigerant in the air conditioning system.

2.The fan of the outdoor unit is not working properly.

3.The condenser or evaporator of the outdoor unit is clogged or dirty.

4.The circuit board of the outdoor unit is faulty.

To deal with the P4 error, you can try the following steps::

1.Check that the amount of refrigerant in the air conditioner system is correct, if not, the refrigerant needs to be added or discharged.

2.Check if the fan of the outdoor unit is working properly, if not, the fan needs to be repaired or replaced.

3.Clean the condenser and evaporator of the outdoor unit to ensure they are not clogged or dirty.

4.If the above steps do not solve the problem, you need to contact a professional aircon maintenance personnel for inspection and repair.