Could a Tiny Copper Tube Cause a Multi - split Air Conditioner to Stop Cooling? Refrigeration Workers Must Pay Attention!

2025-02-12

A multi - split air conditioner has been installed at home, but it doesn't cool. An experienced technician said that perhaps the problem lies in the tiny copper tube!

The copper tube of a multi - split central air - conditioner is an important material for the refrigeration device, connecting the indoor unit and the outdoor unit.

It mainly has two uses:
(1) Manufacturing heat exchangers, such as commonly used evaporators and condensers.
(2) Manufacturing connecting pipes and fittings.

For a multi - split system, regardless of its use, it serves as a passage for the refrigerant, and its role is of great significance. During the installation process, many improper operations on the copper tube may lead to copper tube leakage, which is a fatal defect of the air conditioner. Once there is a leak, all the refrigerant in the air conditioner will spill out, and the air conditioner will become ineffective due to the lack of a heat - transfer medium. So, what are the misunderstandings in copper tube operations?

The storage of copper tubes is not standardized. They are placed messily and not sealed for protection.
The copper tube is not sealed immediately after being made. Failure to seal the copper tube in a timely manner results in a lot of debris inside, endangering the safe operation of the equipment.
The cutting of the copper tube is unqualified. Cutting without using professional tools leads to an uneven cut with many burrs.
Inattention to the connection method. The connection of copper tube diameters uses flared - mouth welding. If the welding is not firm, it may cause safety hazards such as leakage. The tube - expansion connection method must be used.
Nitrogen is not filled during the welding process.
Welding without filling nitrogen makes the inside of the tube black with a lot of oxide scale.
The pipeline layout is too casual. The pipes are laid messily, and the copper tubes are arranged randomly. The layout should be reasonable, with the pipes being horizontal and vertical.
Improper use of tools. Bending the copper tube without using special tools leads to severe flattening of the copper tube, affecting the performance.

It is hoped that refrigeration workers can pay more attention to the above - mentioned wrong cases during the installation project.

A multi - split central air - conditioner itself is just a "semi - finished product". It needs to go through design, installation, and construction to ensure the proper operation of the air - conditioning equipment. Each link of the installation is related to the normal operation of the entire system. If you are a property owner, it is recommended that you must find a professional team for installation.