As the saying goes, "three-point quality seven-point installation", from this sentence can be seen air-conditioning installation on the use of air-conditioning performance. It is understood that air-conditioning installation also has strict specifications, only in line with these rules, after the installation of air conditioning can be effective, to maximize product performance. However, in the face of a lack of standardized home appliance market, some air conditioning installation and maintenance pitfalls often make users unpredictable.
Today, the author brings you all those things that have hidden rules for air conditioning maintenance. Home air-conditioned friends may wish to take a look.
1, the first move: throwing stone asked: claim that air conditioning needs cleaning. The maintenance worker intentionally dropped debris into the air-conditioner outside machine, and then told the consumer that the air-conditioner outside machine needed to be turned on and cleaned. Generally, it costs 40 yuan to clean one machine.
2, the second move: Qu Bing Cheng Zhao: break the connection of copper tubes. Before disassembling, the repairman first claimed that the copper pipe connecting the external machine and the internal machine was easily broken. The customer did not pay attention during the operation, and the user broke the copper pipe and allowed the customer to replace the copper pipe. The price for selling copper tubes for repairs is generally 80 yuan per meter for hooks, ** up to 120 yuan per meter for counters, and generally a new copper tube is more than 3 meters, so consumers will have to come up with 200 300 yuan.
![Accidentally slaughtered air conditioning maintenance hidden rules exposure]()
3, the third move: stealing a column: claim that the compressor needs to be replaced. The repairman told the consumer that the compressor had aged or had broken, and if there was no safety risk, he said that the replacement could be discounted immediately. The price of replacing or repairing the compressor must be several hundred thousand dollars.
4, the fourth move: plus the price increase: artificially shut off the valve. In the process of disassembly or repair, workers shut off the valves, claiming that the air conditioners are naturally depleted, leaking fluorine, and need to be re-fluorinated. Ordinary air conditioning need to add 5 times the pressure of fluorine, hang up a pressure of 40 yuan a fluoridation, cabinets, a 50-plus fluorine pressure, consumers have to pull out 200 to 300 yuan.
It's really a trick. If you're all in, congratulations, you're supposed to spend 100 or so to solve the problem. The price of 1000 is still cheap.
In addition to the above four classic strokes, there are three unspoken rules.
Unspoken Rule 1: Small Problems Said to be Big Problems
For example, if the sensor on the circuit board is faulty and the air conditioner is not working, replacing the sensor will solve the problem and the cost will only be a few bucks. However, the maintenance personnel will say that the circuit board is broken and the circuit board must be replaced. The repairman moved the air conditioner back and replaced the sensor and sent it back for several hundred dollars.
Unspoken rule 2: Fees are several times higher than cost
Such as air conditioning and fluoride, due to the price department on the snow species (Note: Refers to fluorine and other refrigerants, industry terms) charges do not provide the price, the market plus fluoride charges should be more than 100 yuan. In fact, as long as the price of fluorine does not increase by a few yuan or one kilogram, plus the labor cost, the cost of adding a fluorine only needs about tens of yuan. In recent years, the increase in the price of fluorine has been relatively higher.
Unspoken Rules III: Parts Recycling
Most of the air-conditioning parts are general-purpose, and some of the maintenance department uses the accessories of the entrusted unit, and some of them come in wholesale from the outside market. Tips for making more money are concentrated on accessories, such as transfer fees, which are said to be between 20 and 50 yuan. Actually, this fee does not stop at this time. Air conditioners are inevitably damaged during the transfer process. Even if they are not bad, they must think of ways to allow customers to change one. You can use the price of the aluminum tube to collect the copper tube, or collect the copper tube that the customer does not want when relocating the tube and repair it to the next customer.
Final reminder: supervision during repairs, leave evidence after repairs
If you have to handle your air conditioning or repairs, and you are looking for a flyer worker, then you better read this post several times and keep a record of these. In addition, you have to pay attention or tell the master right away, my air conditioning freon Just change, don't break the brass pipe. Just cleaned it last week and made a good shot. Tell him you're not a layman. I've been shot for.
Not only does air conditioning maintenance have so-called "hidden rules", but also in other home appliance repairs.
Today, the author brings you all those things that have hidden rules for air conditioning maintenance. Home air-conditioned friends may wish to take a look.
1, the first move: throwing stone asked: claim that air conditioning needs cleaning. The maintenance worker intentionally dropped debris into the air-conditioner outside machine, and then told the consumer that the air-conditioner outside machine needed to be turned on and cleaned. Generally, it costs 40 yuan to clean one machine.
2, the second move: Qu Bing Cheng Zhao: break the connection of copper tubes. Before disassembling, the repairman first claimed that the copper pipe connecting the external machine and the internal machine was easily broken. The customer did not pay attention during the operation, and the user broke the copper pipe and allowed the customer to replace the copper pipe. The price for selling copper tubes for repairs is generally 80 yuan per meter for hooks, ** up to 120 yuan per meter for counters, and generally a new copper tube is more than 3 meters, so consumers will have to come up with 200 300 yuan.
3, the third move: stealing a column: claim that the compressor needs to be replaced. The repairman told the consumer that the compressor had aged or had broken, and if there was no safety risk, he said that the replacement could be discounted immediately. The price of replacing or repairing the compressor must be several hundred thousand dollars.
4, the fourth move: plus the price increase: artificially shut off the valve. In the process of disassembly or repair, workers shut off the valves, claiming that the air conditioners are naturally depleted, leaking fluorine, and need to be re-fluorinated. Ordinary air conditioning need to add 5 times the pressure of fluorine, hang up a pressure of 40 yuan a fluoridation, cabinets, a 50-plus fluorine pressure, consumers have to pull out 200 to 300 yuan.
It's really a trick. If you're all in, congratulations, you're supposed to spend 100 or so to solve the problem. The price of 1000 is still cheap.
In addition to the above four classic strokes, there are three unspoken rules.
Unspoken Rule 1: Small Problems Said to be Big Problems
For example, if the sensor on the circuit board is faulty and the air conditioner is not working, replacing the sensor will solve the problem and the cost will only be a few bucks. However, the maintenance personnel will say that the circuit board is broken and the circuit board must be replaced. The repairman moved the air conditioner back and replaced the sensor and sent it back for several hundred dollars.
Unspoken rule 2: Fees are several times higher than cost
Such as air conditioning and fluoride, due to the price department on the snow species (Note: Refers to fluorine and other refrigerants, industry terms) charges do not provide the price, the market plus fluoride charges should be more than 100 yuan. In fact, as long as the price of fluorine does not increase by a few yuan or one kilogram, plus the labor cost, the cost of adding a fluorine only needs about tens of yuan. In recent years, the increase in the price of fluorine has been relatively higher.
Unspoken Rules III: Parts Recycling
Most of the air-conditioning parts are general-purpose, and some of the maintenance department uses the accessories of the entrusted unit, and some of them come in wholesale from the outside market. Tips for making more money are concentrated on accessories, such as transfer fees, which are said to be between 20 and 50 yuan. Actually, this fee does not stop at this time. Air conditioners are inevitably damaged during the transfer process. Even if they are not bad, they must think of ways to allow customers to change one. You can use the price of the aluminum tube to collect the copper tube, or collect the copper tube that the customer does not want when relocating the tube and repair it to the next customer.
Final reminder: supervision during repairs, leave evidence after repairs
If you have to handle your air conditioning or repairs, and you are looking for a flyer worker, then you better read this post several times and keep a record of these. In addition, you have to pay attention or tell the master right away, my air conditioning freon Just change, don't break the brass pipe. Just cleaned it last week and made a good shot. Tell him you're not a layman. I've been shot for.
Not only does air conditioning maintenance have so-called "hidden rules", but also in other home appliance repairs.
Semiconductor Plastic Package.Refers to the material whose conductivity is between the conductor and the insulator at room temperature. Semiconductors have a wide range of applications in radios, televisions, and temperature measurement. Diodes are semiconductor devices. Semiconductor refers to a material whose conductivity can be controlled and can range from insulator to conductor. Regardless of technology or economic development, the importance of semiconductors is enormous. Most of today`s electronic products, such as computers, mobile phones or digital recorders, have core units that are very closely related to semiconductors. The common semiconductor materials are silicon, germanium, gallium arsenide, etc., and silicon is a kind of most influential one among various semiconductor materials in commercial applications.
Semiconductor Plastic Package
Semiconductor Plastic Package,Semiconductor Package,Silicon Transistor,Bi Directions Thyristor
YANGZHOU POSITIONING TECH CO., LTD. , https://www.yzpst.com