What should I do if the outdoor unit of the air conditioner is turned on and the power does not work

Air conditioning is divided into indoor unit and outdoor unit, air conditioning failure people often only consider whether the indoor unit is faulty, and the reason why the air conditioner is not refrigerated is that the air conditioner outdoor unit does not work, how to deal with the air conditioner outdoor unit does not work?

First of all, it is necessary to determine the reason why the outdoor unit of the air conditioner does not work, and there are several reasons why the outdoor unit of the air conditioner does not work

First of all, you should pay attention to whether the outdoor unit has working sound (including the outdoor unit, fan and compressor). If the outdoor unit fan is running, the control circuit is basically normal. At this time, you should observe whether the compressor starts or not, and if the compressor does not start, you should check whether the power supply is normal.

If you use a multimeter to measure the compressor power supply, it is indeed 220V. Then check whether the capacitor is damaged and whether the overload protector is broken. If there are no problems with any of the above tests, the compressor should be replaced.

Second: If there is no voltage of 220V at the power supply end of the compressor, it is necessary to detect whether the relay coil of the control board is burned and whether the contactor contact is ignited, resulting in an increase in resistance? If such a fault is confirmed, the relay or control board needs to be replaced.

Third: pressure protection switch action.

Fourth: sensor failure. Use a multimeter to measure the resistance value of the outdoor unit coil unit sensor, if the sensor resistance value deviates from the normal value or there is an open circuit or short circuit fault, the sensor needs to be replaced.

Fifth: The ambient temperature is too high to lead to system protection. The ambient temperature is too high, the sun is shining without shading, and the outdoor unit is poorly ventilated, which will cause the compressor to overheat in summer.

Sixth: Protective shutdown due to too much refrigerant.

Seventh: AC contactor failure. Power on the AC contactor, measure the outlet end of the AC contactor with a multimeter to see if there is a voltage of 380V, if not, it means that the AC contactor is damaged internally, and a new AC contactor needs to be replaced.

You need to use a multimeter to check whether the external unit has electricity, and whether the control signal output by the internal unit has reached the external unit, and check that the internal machine does not output the control signal

Summary. Hello dear! The reasons why the internal unit of the air conditioner has electricity and the external unit does not have power are as follows:

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 exhaust temperature of the compressor will be overheated, which will cause the superheating load protection switch to trip. Hello dear! The above is my answer to this question, if you think I am very satisfied, please follow me for a one-on-one consultation in the future, and then please do it a little manually, give me a thumbs up!

Welcome to consult again!

Hello dear! The reasons why there is no power in the inside unit of the air conditioner and no power in the outside unit are as follows: 1. Too much refrigerant.

Appropriately reduce the dose of socks tremor cold. 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 exhaust temperature of the compressor will be overheated, which will cause the superheating load protection switch to trip.

Hello dear! The above is my answer to this question, if you feel that I am very satisfied with the noise, please pay attention to me for a one-on-one consultation in the future, and then please do it a little manually, give me a like! Welcome to consult again!

I used it last year, and I just started it this year.

It is recommended to carefully check whether the relay powered by the outdoor unit on the main control board of the indoor unit can be used to work as usual, whether the power cord from the indoor unit to the indoor potato external unit is loose or broken, and whether there are obvious abnormalities in the appearance of the main control panel. If there is an obvious abnormality, the abnormality should be ruled out first. At the same time, check whether the remote control signal command to the indoor unit is effective, and whether there is any abnormal fault in the signal connection line between the remote control signal receiver and the main control board.

Summary. Dear, if the air conditioner has power inside and the outside unit has no power, there are the following reasons and solutions: 1

The power supply is abnormal or disconnected. Check the power supply circuit. The indoor unit and the outdoor unit are connected by the AC contactor, and the power supply is also transmitted through this channel, so when the AC contactor is damaged, it means that the outdoor unit and the compressor cannot receive the power supply, and the outdoor unit will not be able to work normally!

2.Freon leaked. The amount of freon is limited, too much or too little will cause the air conditioner to not work properly, at this time the self-protection system of the air conditioner will appear high-voltage protection automatic switch on and off for self-protection!

3.Contaminated condenser. The outdoor condenser also has its own self-protection system, and its self-protection system will be activated when it is not cleaned regularly!

Dear, if the air conditioner has power inside and the outside unit has no power, there are the following reasons and solutions: 1The power supply is abnormal or disconnected.

Check the power supply circuit. The room or Shengyu internal unit and the outdoor unit are connected by the AC contactor, and the power supply is also transmitted through this channel, so when the AC contactor is damaged, it means that the outdoor unit and the compressor cannot receive the power supply, and the outdoor unit will not be able to work normally! 2.

Freon leaked. There is a certain limit to the amount of freon in Xiaochen, too much or too little will cause the air conditioner to work abnormally, at this time, the self-protection system of the air conditioner will appear high-voltage protection automatic switch on and off for self-protection! 3.

Contaminated condenser. The outdoor condenser also has its own self-protection system, and its self-protection system will be activated when it is not cleaned regularly!

Kiss, according to the teacher's experience, if the above aspects are all right, then it is the fault of the following aspects: Block 1Computer board malfunction.

The operation of the outdoor unit is simply known to be controlled by the computer board, so when the outdoor unit is not running, there will also be a fault of the computer board! In this case, the teacher does not recommend that you disassemble the Weibo without permission, and you need to find a professional to repair it to avoid secondary damage and safety accidents! <

Dear, in general, the compressor, outdoor unit burned out. It will also cause the dongqiao outsider to not work. The air conditioner is powered on and does not work, and the display screen does not display. The air conditioner is normally wide and clear, and the air conditioner does not start!

The reason why the outdoor unit of the air conditioner does not turn.

1. The remote control mode is incorrect Check whether the setting of the remote control is the refrigeration mode. Using the remote control of the air conditioner, adjust the mode to display "cooling" or "snowflake", and set the temperature to 26 degrees Celsius or below.

2. Power supply problem: Pay attention to whether the outdoor unit has working sound (including outdoor unit fan and compressor). If the outdoor unit fan is running, the control circuit is basically normal. At this time, you should observe whether the cracked compressor is started, and if the compressor is not started, you should check whether the power supply is normal.

3. There are many reasons why the voltage is not enough, if the air conditioner cannot be turned on, it is necessary to check whether the power supply of the external unit is electric or whether the voltage reaches the rated voltage. If it is not the cause of low voltage, please check whether the indoor and outdoor units are connected correctly, whether the wires are aging, and whether the motherboard of the indoor unit is wired correctly, otherwise replace the motherboard of the internal unit.

4. Long-term non-maintenance of the air conditioner will make the outdoor unit of the air conditioner not rotate, and the specific reason for the non-rotation of the outdoor unit of the air conditioner may be loosened in terms of structure. The motor deviation and the mating part of the wind wheel are not in the appropriate position; Due to the problems of injection molding process assurance, the plastic parts have a squeaky sound, the air guide strip and the connecting rod mechanism belong to plastic parts, and the transmission performance of the structure of the air guide strip, stepper motor and connecting rod mechanism is affected, which will also cause the indoor unit to not run.

5. System protection caused by high ambient temperature When the ambient temperature is too high, the sun shines directly without shading objects, the outdoor unit has poor ventilation and has a mesh cover or the wall is blocked in front of the outdoor unit, the heat of the air conditioner cannot be blown out, and when the temperature is too high, the compressor will automatically start the protection and stop working to avoid damage to the compressor.

6. AC contactor failure Power on the AC contactor, measure the outlet end of the AC contactor with a multimeter to see if there is a voltage of 380V, if not, it means that the AC contactor is damaged internally, and a new AC contactor needs to be replaced.

The reason why the external unit does not work after the air conditioner is turned on is that the remote control mode is incorrect, the power supply is broken, the computer board is faulty, the components are damaged, and the maintenance is not maintained for a long time.

1. The remote control mode is incorrect: check whether the remote control is set to the refrigeration mode. Using the remote control of the air conditioner, adjust the mode to display "cooling" or "snowflake", and set the temperature to 26 degrees Celsius or below.

2. The power supply is broken: check the power supply circuit, the indoor unit and the outdoor unit are connected by the slag flow contactor, and the power supply is also transmitted through this channel, so when the AC contactor is damaged, it means that the outdoor unit and the compressor cannot receive the power supply, and the outdoor unit will not be able to work normally.

3. Computer board failure: The operation of the outdoor unit is controlled by the computer board, so when the outdoor unit is not running, it may also be the fault of the computer board.

4. Component damage: When the components of the air conditioner are damaged, it will also cause the outdoor unit of the air conditioner to not work. When the starting capacitor of the air conditioner compressor is damaged, the outdoor unit of the air conditioner will not rotate, and when the fan of the outdoor unit of the air conditioner is damaged, it will also cause the outdoor unit of the air conditioner to not rotate.

5. Long-term non-maintenance: This will also make the outdoor unit of the air conditioner not rotate, and the analysis of the reasons for the non-rotation of the specific outdoor unit of the air conditioner may generally be the loosening of the tight part of the screw and the rotor lock, and the improper position of the flat motor and the rotor matching part.

The air conditioner is turned on and the external unit does not work, and there may be several original acorns that can be grasped as follows:

1.Outdoor fan failure: The external fan is responsible for cooling the indoor air and dissipating heat to the outside. If the fan fails, it will cause the air conditioner to not work.

2.External condenser failure: The external condenser is the main component that generates heat during the refrigeration process of the air conditioner, if the condenser fails, it will cause the air conditioner to fail to work.

3.Clogged pipes: If there is a blockage in the pipes, it will cause the refrigerant to not flow, which will cause the air conditioner to not work.

4.Insufficient refrigerant: If the refrigerant is insufficient, the air conditioner cannot work because it needs enough refrigerant to maintain the temperature and pressure.

5.Power failure: If the power supply fails, the air conditioner will not work.

If the air conditioner does not work when the external unit is turned on, it is recommended to check whether the fan, condenser, pipes and power supply of the external unit are working properly, and contact 400-698-7789 for professional air conditioning maintenance personnel to deal with it.

What is going on when the air conditioner is turned on and the external unit does not work, Hello dear, there are the following possibilities for the external unit not to work after the air conditioner is turned on. 1. The compressor capacitor is broken, try to replace it with a capacitor. 2. The probe of the indoor thermostat is broken, check whether the contact is bad or replace one, 3. If the computer board fails, repair or replace.

4. The compressor is faulty, there is no repair value, and the air conditioner is replaced. I hope it can help you. If my answer is helpful to you, please give a thumbs up (comment in the lower left corner), look forward to your like, your efforts are very important to me, and your support is also the driving force for my progress.

Finally, I wish you good health and a good mood!