What is the matter with the air conditioner and then the refrigeration stops after a while

This phenomenon can be divided into two situations, one is normal downtime and the other is abnormal downtime.

1. Normal shutdown.

When the air conditioner reaches the set temperature, it will shut down, and then start when the room temperature rises, and then stop when it reaches the set temperature.

2. Abnormal shutdown generally refers to the existence of problems with the air conditioner, and the basic problems are as follows:

1. Lack of fluorine or too much fluorine, lack of refrigerant in air conditioning will lead to compressor thermal protection.

2. The power supply voltage is insufficient, and the mains power supply is unstable.

3. The starting capacitor of the compressor is bad, and the sensing probe of the internal machine is bad.

4. The radiator of the external unit is dirty or has poor heat dissipation.

How to use air conditioners reasonably:

Some users rush the baffle of the air conditioner during the use of the air conditioner, but because the heat is rising, it is easy to cause the indoor temperature to not reach the standard, but because the air conditioner has its own thermostat, because the temperature around the air conditioner reaches the set standard, the air conditioner will automatically shut down.

There should not be too many people in the air-conditioned room, too crowded, otherwise the cooling capacity will be insufficient, and the temperature will be difficult to drop. The doors and windows of the room should not be opened and closed frequently, and personnel should not enter and exit frequently, so as to avoid the loss of air conditioning. The glass windows must be closed tightly and tightly, and double white curtains should be hung inside to reflect some of the light and heat penetrating through.

The window can be opened briefly during indoor ventilation, and the window opening time is generally not more than 10 minutes.

The reason may be that the starting capacitor of the cooling fan of the outdoor unit is damaged, resulting in the fan not running, and the temperature is too high, causing the air conditioner protection to shut down. If the air conditioner stops as soon as it cools down, it may be that the starting capacitor of the air conditioner is damaged and needs to be replaced. 1. If the air conditioner turns on the timing mode, the air conditioner will automatically shut down after the time reaches the predetermined time point, which is a normal phenomenon, and the air conditioner can be started again, and then the timing mode will be canceled, and the air conditioner will not be shut down after running for a period of time.

2. The air conditioner is in sleep mode, when the temperature reaches the adjusted temperature, the remote control will automatically turn off, you can change the sleep mode on the remote control to the normal mode, and the air conditioner will not automatically shut down after running for a period of time. 3. Because the air conditioner will have a defrost reaction when heating, it will frost because of heat exchange, and the air conditioner will automatically frost after working for a period of time, so the air conditioner will shut down, but the air conditioner will resume heating after the defrosting is over, which is a normal phenomenon. 4. If the air conditioner reaches the set temperature standard, the air conditioner will stop supplying air, and after stopping the air supply, the air conditioner will shut down, and the temperature of the air conditioner should be turned up, so that the air conditioner can work normally, and there will be no shutdown after a period of operation after normal operation.

This is a normal phenomenon, when the inverter air conditioner reaches the set temperature indoors, the compression exciter will operate at reduced frequency, continue to operate with low power and low power consumption, and keep the room temperature at the set temperature, so it will not stop. First of all, the inverter air conditioner saves 30-40% of electricity compared with the fixed-frequency air conditioner, one of the reasons is that the compressor is always running since the inverter air conditioner starts to start, and the compressor controls the refrigeration capacity through the operating frequency, and the fixed-frequency air conditioner controls the temperature by constantly stopping and starting the compressor. However, the starting current of the compressor is 3-4 times that of the normal operation, and the inverter air conditioner does not stop running, so it saves a lot of power consumed by the frequent start of the fixed-frequency air conditioner, so as to achieve the purpose of energy saving.

The method of adding lubricating oil to the compressor: 1. First close the suction shut-off valve, start the compressor for a few minutes, and discharge the refrigerant in the crankcase into the condenser to make the crankcase into a vacuum. Stop the machine and close the exhaust shut-off valve immediately, and slowly spin the bypass hole screw plug of the exhaust shut-off valve under the lead rock to release the remaining gas in the high-pressure chamber.

Unscrew the through-hole screw plug of the suction globe valve, and install the cone joint and copper pipe. 2. Then prepare the lubricating oil. 3. Next, hold the suction pipe mouth with your fingers, and start the compressor to pump out the air in the crankcase.

If liquid shock is found, let the compressor continue to run for 2 3 minutes, so that the crankcase is in a vacuum state, and stop when the finger holding the nozzle feels a strong suction. 4. Immerse the nozzle of the finger into the oil, let go after immersion, and the oil will be sucked into the crankshaft pipe from the oil pipe. 5. Observe the oil level indicator to see if the oil level reaches the oil level line.

6. Remove the copper pipe and joint, tighten the screw plug, start the compressor to extract the air sucked in the crankcase, and tighten the exhaust globe valve plug when the exhaust sound is not heard. 7. Open the suction and exhaust shut-off valves, and the refueling work is completed.

1. There is a problem with the indoor temperature sensor. There are many temperature sensors that need to be used on the air conditioner, among which the indoor temperature sensor is related to "shutdown", which is installed on the air conditioner. The air conditioner needs to receive the signal from the indoor temperature sensor and automatically shut down when the indoor temperature reaches the set temperature.

If this temperature sensor fails, the air conditioner thinks that the room temperature has not reached the set temperature and turns on the compressor to cool it all the time.

2. There is a problem with the refrigeration system. Air conditioning and refrigeration require a complete system, and any problem in any link will lead to the decline or even elimination of air conditioning and refrigeration capacity. When the air conditioner loses its cooling capacity, the indoor temperature will never reach the set temperature.

The air conditioner does not receive the signal of "the temperature is low enough" from the temperature sensor, so it will naturally not shut down.

1.There is a problem with the indoor temperature sensor. There are many temperature sensors that need to be used on the air conditioner, among which the indoor temperature sensor is related to "shutdown", which is installed on the air conditioner.

The air conditioner needs to receive the signal from the indoor temperature sensor and automatically shut down when the indoor temperature reaches the set temperature. If this temperature sensor fails, the air conditioner thinks that the room temperature has not reached the set temperature and turns on the compressor to cool it all the time. (In addition, another possible consequence of a malfunctioning indoor temperature sensor is that the outdoor unit never starts – because it tells the air conditioner that the indoor temperature has reached the user's set temperature.)

The temperature sensor is faulty and does not affect the air conditioner refrigeration. So when the air conditioner doesn't stop and the room is getting colder and colder, you have to start to wonder about the temperature sensor.

2.There is a problem with the refrigeration system. Air conditioning and refrigeration require a complete system, and any problem in any link will lead to the decline or even elimination of air conditioning and refrigeration capacity.

When the air conditioner loses its cooling capacity, the indoor temperature will never reach the set temperature. The air conditioner does not receive the signal of "the temperature is low enough" from the temperature sensor, so it will naturally not shut down. When the air conditioner does not stop and the indoor temperature does not drop, it is time to start to suspect the problem of the refrigeration system.