The air conditioner is working normally, unplug the power supply, plug in the power supply, what hap

The computer board resets, and the machine returns to standby. The power must be unplugged for 3 minutes before turning on the power, so that the air conditioning compressor can work, which is the same as the refrigerator compressor. Unplugging any electrical appliance during operation is a violation of the rules and is easy to cause the motor to burn out.

There are 3 main reasons:

1. Caused by low voltage, some air conditioners are suitable for low-voltage operation (187V-242V) can work, maybe your manufacturer is different from others, or yours belongs to the old model. (It is recommended to install a voltage regulator).

2. The outdoor unit is too dirty, causing your air conditioner to dissipate heat poorly and the compressor to overheat protection. (Cleaning the outdoor unit can solve the problem).

3. The starting capacitance capacity of the compressor is reduced, because the voltage itself is low at night, if the capacity of the capacitor is small, it is difficult for the air conditioning compressor to start. (Replace with a new capacitor of the same specification).

When working normally, don't unplug the power directly, you should turn off the air conditioner, and then unplug the power later, you directly unplug the power supply, this is not good for the air conditioner when it is in operation.

Is it that the pressure of the air conditioning system is abnormal?

Or the air is not removed during the installation of the air conditioner.

Now the air conditioner is working normally, he unplugs the power supply, we check the power supply, the air conditioner its compressor does not run.

Hello: Air conditioner in operation,in high-voltage systemsThe pressure is very high, after the power is offIt is not possible to power it on immediately, a delay (minimum of 3 minutes) is required, otherwise the compressor will not be able to start due to heavy load. The immediate consequence isOverheat protectorJump away.

It is estimated that the temperature is not high, you can adjust the temperature to a low level and then take a look.

In this case, it should be because the compressor of the air conditioner is broken, or the wiring there is short-circuited.

You can't absolutely determine that the air conditioner is broken, under normal circumstances, the air conditioner has a power-off protection function, as long as it is not a particularly well-known brand of air conditioner should have this function, which may involve whether the fuse or the capacitor of the outdoor unit is damaged, etc., I personally recommend that you call customer service ** to explain the situation, they should instruct you how to operate. Above, for reference!

Reasons why the aircon compressor is not working. Principle analysis: the voltage is too low; Refrigeration temperature control is placed at high temperatures; Failure of the temperature controller; Compressor circuit failure; The compressor motor burns out; The compressor starter burns out; Overload protection failure.

Causes and elimination of high pressure and overheating:

1. Too much refrigerant. Reduce the refrigeration dose appropriately.

2. Poor heat dissipation. Check the condenser pipe for dirt and dirt 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.

It means that the AC contactor on the power supply line of the compressor is not engaged.

This situation is mostly due to the failure of the main control board of the air conditioner, the lack of a relay or AC contactor that outputs a signal to supply power to the control compressor, or the damage of the relay or contactor itself.

If you can handle it yourself, you should focus on checking the main control board and the compressor power supply line; If you can't handle it yourself, you should report for repair.

The reason why the air conditioner does not respond when plugged in:

1.Power failure:

Use a multimeter to test the power supply empty socket, and replace the socket if it shows a fault.

If the socket is not damaged, check whether the front stage is empty open, switch knife protection or line burned, and then eliminate the fault or replace the air open, switch knife or line, etc.

2.The air conditioner itself is faulty:

Generally, check the motherboard fuse, transformer primary resistance, transformer secondary resistance, and motherboard switching power supply output voltage.

If the fuse is burned, it may be caused by the peak voltage of the power supply being too high, or there is a short circuit in the back stage, and a fuse can be replaced.

The air conditioner is not working, unplug the power, and then connect the power supply and work again, what is the reason?

The air conditioner is not working, unplug the power, and then connect the power supply and work again, what is the reason? Hello dear,!There are several reasons why the air conditioner is not energized:

The power outlet is dead or the power cord is broken. (Measure the current on the 220V power supply of the variable finch pure voltage on the main control board, and if there is none, check the socket and power cord and replace it.) The main control board fuse burned.

Take off the safety and take a look at it, and replace it if it is blackened or cracked) The main control board transformer overheating protection device is burned out. (Use the ohmic file of the multimeter to measure the strong current section of the transformer, if the gauge needle or number is displayed, it proves that there is no problem with the strong current section, and the resistance value of the weak current section is generally zero) The main grip control board circuit is disconnected. Hope it helps!

Power failure:If there is a multimeter, you can measure the power supply air open socket, if there is no multimeter, you can plug in the air conditioning socket on the electrical appliances, if you can use the socket is no problem, if you can not use the socket is out of power, replace the socket, if the socket is not damaged, it is likely to be a pre-line problem, check whether the pre-amp is empty, the knife protection or the line is burned out, and then the corresponding troubleshooting or replacement of the empty open, the knife or the line, etc.

Precautions for the use of air conditioners.

If the joints of the air conditioner are not tightened or cracked, fluorine leakage will occur. If the air conditioner leaks fluorine, then the user needs to replenish it frequently, and the normal use of the air conditioner generally does not need to add refrigerants for several years. Test method:

Refrigerant leak inspection should be carried out before commissioning. The leak detection is mainly for the 4 interfaces of the internal and external machine connections of the air conditioner and the shut-off valve valve port.

Soapy water (dish soap can also be used) leak detection is one of the commonly used methods in the field, open the valve for 10 15 seconds (20 30 seconds for the cabinet) of the split air conditioner and close the valve, and all parts of the system are quickly filled with gaseous refrigerant greater than the air pressure. Apply soapy water to the suspicious point of leakage, if there is a bubble formation, there is a leak, and if there is no bubble after observing for 3 minutes, it can be considered qualified.