The evaporation box of the car exploded, and the air conditioner was not refrigerated

1.Let me first tell you about the pressure switch in the air conditioner.

When the refrigerant in the refrigeration system is insufficient or leaking, the refrigeration lubricant may also leak, resulting in poor lubrication of the air conditioning system, which can lead to serious damage if the compressor is operated in a state of oil shortage.

Low-voltage switches are usually installed directly in the high-voltage line with threaded joints, in series in series in the electromagnetic clutch circuit. Its structure is similar to that of normally open high-voltage switch, when the refrigerant pressure is normal, the moving contact is connected to the compressor electromagnetic clutch circuit; When the pressure of the refrigerant discharged by the compressor is too low, the low-pressure switch is disconnected, the electromagnetic clutch circuit is cut off, and the compressor stops running to prevent damage to the compressor.

This pressure switch is a protective device to prevent the compressor from being damaged, which means that your evaporation tank will not necessarily damage the compressor. Of course, there are special circumstances, I personally recommend that you change the repair shop, or let this repair shop check whether the downward pressure switch is good or bad, and the pressure value in the high and low end pipes of the air conditioner.

2.Sometimes the amount of refrigerant and refrigerant oil is not enough, and the compressor does not rotate. This also has something to do with the pressure switch. This is also an inspection direction.

If both are normal, finally consider the quality of the compressor.

I hope it can help you, but I really can't change the repair shop, let me check it more.

Test the high and low pressure data, and judge the fault location according to the pressure value.

If it is confirmed that the compressor is broken, it is better to replace it with a new one, and the price of repair and replacement is about the same.

Foreword: The reason why the car can operate normally comes from the rational use of various components, if the evaporation tank of the car is broken, what problems will it cause?

First, the problem of the car evaporation box is broken, if the owner wants to judge what will happen if the car's evaporation box is broken, then there is a very obvious phenomenon, that is, it will suddenly be found that the car's air conditioning is not refrigerated, and if the air conditioner is turned on, the driver can smell the smell of the car air conditioning refrigeration system in the cab. If there is a problem with the evaporation tank of the car, we can also carry out a series of inspections.

Second, how to judge whether the car evaporation tank is damaged, we can check it through the detector, and we can inject fluorescent agent into the evaporation box.

Continue to use the air conditioning system after adding the fluorescent agent.

Check whether the fluorescent agent is leaking from the drain pipe of the evaporation tank, if the fluorescent agent leaks at this time, it means that there is a problem with the evaporation tank of the car. It is also possible to carry out an air tightness check, and we can guess the evaporator.

Then the bee has an inlet, and the other port is connected to the compressed air and placed in the pool to see if there is air leakage, if there is air leakage, the pool will bubble at this time, indicating that the evaporator of the car has been damaged, if there is no air leakage, it means that the sealing is better, which proves that the evaporation tank of the car is not blocked. When the evaporation tank of the car is not working, it is often in a humid place, so it is very easy to produce bacteria, so we need to clean it regularly.

Third, the regular cleaning of the evaporation tank first of all, we have to disassemble and wash, but this process is very easy to damage the components of the air conditioning system, so generally we do not advocate this method. It can be cleaned with a traditional air conditioning foam cleaner, but it also has the disadvantage that it cannot be cleaned in a targeted manner. It can also be cleaned in a visual evaporation box, this process can be clearly seen, and it can be cleaned in a targeted manner, the cleaning process is more thorough and comprehensive, and it is generally recommended to clean it in a professional cleaning shop.

The symptom of a broken car evaporation tank is that the car air conditioner is not refrigerated, the car air conditioning system has no refrigerant, and you can smell the smell of car air conditioning refrigerant or car refrigerant oil in the cab.

If there is a problem with the evaporation tank, the temperature of the car will be too high or too low, because the temperature cannot be adjusted, and there will be a lot of water vapor in the cab.

It will cause the air conditioner to not refrigerate, and it will also cause the air inside the car to be uncirculated, not fresh, and will have an unpleasant smell.

The symptoms that will occur when the evaporation tank of the automobile air conditioner is broken: first, the engine power decreases, that is, the power output is uneven and gradually decays, in other words, it is getting weaker and weaker. The second is to increase fuel consumption and increase your financial burden.

Third, it is difficult to start cold, that is, it is difficult to ignite, and it is not easy to get into the car. Finally, a large amount of carbon deposits in the combustion chamber can also cause cylinder knocking, and the engine will be noisy when accelerating at low speeds, causing damage to the piston and crankshaft, causing high engine temperatures, and seriously affecting the safety of the car. Fourth, the throttle failed, the engine shook, and the rev was unstable.

The cleaning steps of the evaporation tank of the automobile air conditioner are as follows:1. Start the engine, turn on the air conditioner, and set the wind speed to a high level (the system is set to external circulation).

2.Insert the extension tube of the cleaning agent into the air inlet of the air conditioner and spray it into or directly into the air inlet of the evaporator fan. 3.

Turn the air conditioner to the cold air, and then spray it to the air inlet or fan inlet of the evaporation tank. 4.Stop spraying for 1 to 2 minutes, wait for the foam to dissipate, and continue spraying a few times until you are finished.

5.Turn on the internal circulation of the air conditioning system, close the doors and windows, and keep the system running for 10 minutes.

1. Carbon deposition will cause insufficient combustion of gasoline and cause the engine to shake.

2. The impact of engine carbon deposition on the car is quite large, first of all, it is to reduce the engine power, that is, to make the power output uneven and gradually decay, in other words, it is more and more weak.

3. The second is to increase fuel consumption and increase your economic burden. The third is the difficulty of cold start, that is, the difficulty of ignition, it is not easy to get on the car, and finally the carbon deposit in the combustion chamber is strict, and a heavy one will also cause cylinder detonation, and there will be a sound of low-speed acceleration, which will cause damage to the piston and crankshaft, and cause high temperature of the engine, which will seriously affect the safety of the car.

4. Then the emission exceeds the standard, which not only fails the annual inspection and inspection, but also directly aggravates the harm of environmental pollution.

5. The throttle valve is faulty. Both of these problems can cause engine shake and unstable speed. Blind resistance.

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Here are the main reasons for air conditioner evaporator damage::

1. Overuse:

Excessive use of air conditioner is one of the main causes of damage to the evaporator of the air conditioner, because the long-term use will lead to the overuse of the coolant and compressor of the evaporator, which will make the temperature of the evaporator too high, resulting in acid etching, resulting in wear and corrosion of the evaporator.

2. Improper maintenance

Improper maintenance is also one of the main causes of damage to the evaporator, if the evaporator is not cleaned regularly, dust will accumulate on the evaporator, resulting in poor heat dissipation of the evaporator. At the same time, if the air conditioner filter is not replaced in time, the dirt will be adsorbed on the surface of the evaporator, which will increase the wear and tear of the evaporator and lead to damage.

3. Compressor failure:

The air conditioner evaporator needs to rely on the compressor when working, and if the compressor fails, it will cause the evaporator to work abnormally, increasing the pressure and temperature inside the evaporator, resulting in the evaporator failure.

3. Electrical faults:

Electrical failure is another cause of damage to the evaporator of the air conditioner, such as power failure, short circuit of the circuit, etc., which will cause harm to the evaporator, resulting in the fuse and damage of the evaporator.

The air conditioner is not cool or does not cool well: The evaporator is a key component in the air conditioner that is responsible for absorbing indoor heat and converting it into cold air. If the evaporator fails, it may cause the air conditioner to not cool or the cooling effect is obvious, and the hail is reduced.

Poor air-conditioning circulation: Blockage or damage to the evaporator may lead to poor air-conditioning circulation, which can affect the cooling effect of the air-conditioning system. This can result in reduced air flow, uneven distribution of heat and cold, or non-proper cold in some rooms**.

Condensate overflow: The evaporator produces condensate in the process of absorbing heat. If the evaporator is broken, it may cause poor condensate discharge, causing condensate overflow. This can manifest as water droplets dripping indoors or around the air conditioning unit.

Abnormal noise: Failure of the evaporator may cause abnormal noise during the operation of the air conditioner, such as hissing, dripping or abnormal vibration of the car.

If you suspect that the aircon evaporator is faulty, it is recommended to contact a professional aircon maintenance service personnel for inspection and repair.

The symptom of the car air conditioning evaporation tank is that the car air conditioner is not refrigerated, the car air conditioning system has no refrigerant, and the car air conditioning refrigerant or car refrigerant oil can be smelled in the cab. The car evaporation tank is located inside the instrument panel, and when the air conditioner is turned on, the evaporation box needs to be exchanged with cold and heat, so that a large amount of condensate is generated on its surface. At the same time, the entry of outdoor air may carry various dust, fine burners, impurities, etc., which and condensate adhere to the surface of the evaporation tank.

At the same time, because the air conditioner evaporation tank is not working in a warm, dark and humid environment for a long time, it is easy to breed a large number of molds and other bacteria, and molds will multiply quickly once they encounter a suitable environment. Therefore, Qinglu said that regular cleaning is still necessary, and it is recommended to clean it every other year.