Is it possible that Midea s air conditioner engineering machine is refurbished or has quality defect

I have stayed in the factory, there should be no problem with the quality of the engineering machine, because the model of the operation of the engineering machine is determined by the branches around the country, why there is an engineering machine this mode of operation, the average person may not understand, the particularity of the air conditioning industry determines this sales model, public places or office and other places have a large demand for air conditioning, it is impossible to solve it through retail channels, under the premise of this sales characteristic, there is a model of engineering machine operation, and because of the fierce competition, Each brand has to grab a share, and when the task is issued, it contains the share of the local engineering machine market, so the flexibility in the operation of the engineering machine is very large. And because the engineering machine market and the retail market are separated, so the fluctuation will not have an impact on the retail market, of course, the operation of the TV is more flexible. Therefore, under such a premise, the manufacturer is unlikely to produce a batch of machines separately to do engineering, the amount of engineering machines is too large, all to six years warranty, if not to ensure the quality of the estimated no.

Of course, it may not be realistic for you to use the quality of the engineering machine to compare with the mid-to-high-end products!

Engineering machines are some of the preferential items that are ready to go offline. High energy consumption, ordinary style, normal stores are used to play the best machines are generally used for engineering machinery. Quality is no problem! Also enjoy a 6-year free repair warranty!

The standard of doing the project: 1 The amount is over 20,000 2 units are enough for 10 units In order to enjoy the normal project price.

If the above standards are not met: the approved engineering machine is actually the best machine in the store, but the boss operates it slightly, saying that it is an engineering machine, in fact, this is a mode of sales.

If the number or amount exceeds a certain value, you can apply for an engineering machine, even if you buy a 5P one, you can apply for an engineering machine. Refurbishment is almost impossible. But it's really hard to say that there are flaws.

However, the United States are free to repair within 6 years, and if you have a problem, you can just find them directly. When repairing, you can ask, the same problem can be repaired several times in a row, and it can be replaced with a new machine. If you can, ask him to sign for you, it's safer.

Causes and treatment methods of air conditioner not cooling and poor refrigeration:

1.Insufficient refrigerant. When the refrigerant circulating in the refrigeration system is insufficient, the pressure values on both the high and low pressure sides will be lower than normal, and the bubble flow can be seen from the observation window. At this time, after checking that the air conditioner does not refrigerate the system without leakage, an appropriate amount of refrigerant should be added.

2.Too much refrigerant. If the refrigeration dose charged exceeds the normal capacity of the refrigeration system, the liquid refrigerant in the condenser will inevitably increase, thereby reducing the heat dissipation area and reducing the cooling efficiency.

The main manifestations are: the pressure value of the high and low pressure side of the system is higher than normal, touch the high-pressure pipe with your hand, feel hot and disconnect the air conditioning switch for about 45s, and still see the refrigerant flowing in a foamy state from the observation window. In this case, the appropriate amount of refrigerant needs to be discharged from the low-pressure side to bring it to the normal discharge pressure and temperature.

3.The refrigeration system is dirty. Due to the long-term operation of the compressor, impurities from mechanical wear can cause the reservoir dryer or expansion valve to clog slightly, resulting in insufficient cooling output.

The low pressure value of the system is too low, the pipes before and after the reservoir dryer have obvious temperature difference or frost at the expansion valve, and the reservoir dryer needs to be replaced or the refrigeration system needs to be cleaned.

4.Electronic control circuit failure: the electronic control computer board is also relatively easy to damage, as well as the work parts, compressor internal and external fan damage. When encountering such air conditioning non-refrigeration faults, most of them are repaired with minor faults; Major failure replacement.