The air conditioner is good and bad when it cools, and the capacitor has been replaced, and it is st

Hello:— 1. "Air conditioning is good and sometimes bad"...Should it be checked for electrical faults? Or is it a refrigeration system failure?

2. If the compressor does not rotate when it is rotating, this fault will occur. The cause is overcurrent caused by high pressure or poor heat dissipation.

3. The air entering the refrigeration system during maintenance will also cause the intermittent shutdown of the abnormal increase in operating pressure.

4. When moisture is mixed into the refrigeration system, there will be a "ice blockage" phenomenon during refrigeration, which is manifested as "good and bad refrigeration".

5. The ambient temperature is too high (the design stipulates that it will stop for protection if it exceeds 43) or the heat dissipation fin is blocked by foreign objects, which is also one of the reasons for the failure.

Power line issues.

Fault phenomenon: no refrigeration.

Reason analysis: power on, the internal machine works normally, observe the external machine, the press starts the "hum" sound, can not start normally, the voltage is reduced from 230 volts to 138 volts, the press is protected, the power supply is identified as a problem, check the user's power socket, and find that the decorator uses the grounding wire as the zero line, and the test machine is normal after processing.

Solution: Connect the ground wire with the neutral wire.

Experience summary: installation must be terminated with n neutral wire, can not be replaced by grounding wire, ground wire and neutral wire reversed, but also may cause air switch tripping, new installation of this problem to focus on checking the power supply, sometimes the power cord is too thin, the air conditioner starts when the current is large, and the large voltage drop on the wire will also cause difficulty in starting. In addition to power cord issues, the size of the air switch often causes start-up trips.

Is there any refrigerant left?! Check it out.

If the air conditioner cracks and the world is broken, the compressor will stop running, and the air conditioner will not be refrigerated for a long time.

Compression and conversion of the source stupid machine capacitance damage:

1. When the compressor starts normally, it will be accompanied by large noise and jitter, and the capacitor will be damaged. If you press the casing above the compressor, you will feel a slight shaking of the compressor, and the sound will be like the sound of electric current passing through, and the compressor will stop after a while.

2. After the air conditioner is turned on, the air conditioner is not refrigerated normally or does not refrigerate for a long time.

Air conditioner will not start: A damaged capacitor may cause the air conditioner to not turn on properly. When you try to turn on the air conditioner, there may be no response or only some flashing lights, but the empty acacia silver tone will not start.

Abnormal noise: A damaged capacitor may cause abnormal noise to emanate from the inside of the air conditioner. These noises can be caused by vibrations or circuit disturbances caused by the capacitor not being able to supply a stable power supply.

Unstable operation: Capacitors play a role in stabilizing voltage and current in air conditioners. If the capacitor is damaged, the operation of the air conditioner may become unstable, such as frequent shutdowns, restarts, or flickering problems.

Abnormal heat: A damaged capacitor may generate excessive heat. You may observe abnormal heat around the air conditioner or heat up the body.

If you suspect that the air conditioner capacitor is damaged, it is best to ask a professional air conditioner maintenance personnel to check and replace it. Air conditioner capacitors involve electrical components and require safety precautions, so it is recommended not to attempt to repair them yourself to avoid electric shock or other hazards.

The following phenomena may occur when the capacitor of the air conditioner is broken:

The air conditioner cannot be started or it is difficult to start: The main role of the capacitor is to provide current, if the capacitor is broken, it will not be able to provide enough current to the air conditioner motor, resulting in the air conditioner not being able to start or having difficulty starting.

The air conditioner becomes louder: A broken capacitor will cause the air conditioner pants to make a louder noise, or even make a sound-like sound.

Unstable operation of the air conditioner: Broken capacitors can cause the speed of the air conditioner motor to be unstable and unable to operate stably. This can cause the air conditioner to be constantly turning on and off.

Air conditioners cannot cool or heat: Capacitors are an important part of air conditioning motors. If the capacitor is broken, the air conditioner motor may not be able to provide enough energy to cool or heat, thus affecting the function of the air conditioner.

If the above situation occurs, it is recommended to contact professional and technical personnel for inspection and repair in time.

There are two capacitors in the outdoor electromechanical box, the larger one is the compressor capacitor, and the smaller one is the external motor capacitor

1. Compressor capacitance damage: the performance phenomenon is that the normal compressor will be accompanied by large noise and jitter, if the capacitor is damaged, the hand will feel a slight shake of the compressor when pressed on the shell above the compressor, and the sound is like the sound of electric current passing, and the compressor will stop running after a period of time.

2. Capacitor damage to the external motor: the performance phenomenon is that after the compressor works normally, the external motor stops working for a period of time, and if there is a fault, there will be high-pressure protection and compressor exhaust pipe temperature protection. It depends on which capacitor it is, if the fan capacitance is bad, then the fan must not work, if the compressor capacitor is broken, the compressor will not start, but no matter which capacitor is broken, the only thing that is certain is that the air conditioner Tongji is defeated and the refrigeration is not normal or not refrigerated at all.

The manifestations of broken air conditioner capacitors are:

The compressor is difficult to start.

The capacitor housing is swollen or leaking.

There is a discharge sound inside the capacitor.

The compressor cannot work normally, and the sound is abnormal during operation. Imperial respect.

We hope to find the above information helpful.

1. If the air conditioner is not refrigerated, it is not necessarily that the capacitor is broken, nor is it necessarily that the compressor is broken.

2. This is not necessarily the compressor damage, and the possibility of random damage is very low. The failure rate of the compressor itself is not high, and the compressor is not easy to be damaged.

3. When the air conditioner is not refrigerated, it is necessary to check the causes of troubleshooting one by one. If the air conditioner is not cooling and there is a fault** at the same time, the fault type can be roughly determined based on the fault**.

4. In fact, the air conditioner is not refrigerated, if the user has time, he can check it himself. If the motor does not rotate after powering on, the capacitance should be tested first to check whether the capacitance is good. Pointer multimeters used for direct measurements should use the ohmic range.

If the pointer of the multimeter is deflected and returns to a certain value, the capacitance is good. If the pointer is zero or infinity, it indicates that there is something wrong with the capacitance. Remove the damaged capacitor directly and replace it with a new capacitor of the same model.

Summary. There are two main reasons why a broken air conditioner capacitor can lead to not cooling. First of all, the capacitor is the starter and runner of the air conditioner compressor, and when it is damaged, it may not work properly to produce enough cold air.

Secondly, the capacitor also undertakes the function of adjusting the current and voltage, if the capacitor is damaged, it may cause the current or voltage to be abnormal, which will affect the operation of the entire cold air circulation system. In either case, when an aircon capacitor is damaged, it is often necessary to replace it with a new capacitor to fix the problem.

There are two main reasons why a broken air conditioner capacitor may not refrigerate. First of all, the capacitor is the starter and runner of the air conditioner compressor, and when it is damaged, it may not work properly and thus not produce enough cold air. Secondly, the capacitor also undertakes the function of adjusting the current and voltage, if the capacitor is damaged, it may cause the current or voltage to be abnormal, which will affect the operation of the entire cold air circulation system.

In either case, when the air conditioner capacitor is damaged, it is often necessary to replace the capacitor with a new one to fix the problem.

Can you elaborate on that a little bit more?

The main reasons why a broken capacitor may not refrigerate are that there are two points in the cavity: 1Capacitors are the starters and runners of air conditioning compressors, and when damaged, they may not work properly and cannot produce enough cold air.

Moling Tomato 2Capacitors are responsible for regulating current and voltage, damage may lead to abnormal current or voltage, affecting the operation of the entire air-conditioning circulation system. When damaged, a new capacitor needs to be replaced to fix the problem.

Not necessarily. Bad capacitor is not refrigerated is only a kind of air conditioning failure, followed by lack of refrigerant and not refrigeration, as well as computer board bad and not refrigerated, and solenoid valve bad not refrigerated, etc., so only when overhauling, the use of elimination method can know the problem.

Quite possibly, but not the only reason:

1.In the low-power (below 3kw) air conditioner, the capacitor is the necessary component to start (run) the single-phase fan motor (compressor) when the single-phase mains voltage of 220V is used (there is no such capacitor in the three-phase electric air conditioner with high power above 3kw), and its damage is directly to the point that the compressor (fan) does not work, and of course, the air conditioner will not be refrigerated;

2.In the failure of non-refrigerated air conditioners, the problem often encountered is that the compressor and fan motor are working normally, and the reason for not refrigerating is the fluorine leakage (refrigerant) of the refrigeration pipeline system;

3.In the intelligent control system of the air conditioner, there is a fault, which can also cause the air conditioner to not refrigerate.

From the above analysis, it is very likely that the capacitor is broken when the air conditioner does not refrigerate, but the same is true for fluorine leakage and faulty control system. Back to the end.

The air conditioner has to change the capacitor every year, whether the capacitor is big or small.

The air conditioner has to change the capacitor every year, whether the capacitor is big or small. Hello family, the size of the air conditioner capacitor is very important for the start of the air conditioner, the capacitor is small and the air conditioner can not start, which is equivalent to the compressor is in a stalled rotation situation, the current is very large, the compressor does not start, and the compressor may burn out for a long time. The capacitor collapses when the charge and discharge current of the capacitor is large, and the compressor works under the high current, which will heat up until the heat is protected.

Compressor capacitor damage and fan capacitance damage will cause the pressure of the pipeline to increase, and it will stop after a while, the compressor capacitor will be damaged, and the air conditioner will not be refrigerated, and the internal and external fan capacitance damage will cause the phenomenon of refrigeration for a while and no refrigeration for a while. The heating mode is similar, except that the hot and cold are swapped.