The 4 way reversing valve of the air conditioner plays the role of automatic conversion of cold and heat in the air conditioning refrigeration system, and it can change the direction of the flow of the refrigerant in the pipeline. If the 4 way reversing valve of the air conditioner is damaged, it will cause the phenomenon that the air conditioner does not cool or heat, so the faulty 4 way reversing valve in the air conditioner must be replaced, because the valve core in the 4 way reversing valve is plastic. It is easy to cause damage to the valve core, so the replacement of the 4 way reversing valve of the air conditioner should strictly follow the steps.

First determine whether the spool of the new 4 way reversing valve is in the normal position. Normally, it should be between the suction pipe and the evaporator pipe. Remove the coil of the new 4 way reversing valve, wrap the 4 way reversing valve body with cotton cloth, and soak the cotton cloth with water. Prevent the spool from burning out during welding. Put the 4 way reversing valve body in the water, and use the welding torch to weld the four pipes of the 4 way reversing valve. After soldering, remove the cotton cloth from the bread on the 4 way reversing valve and let it cool down slowly. Then install the 4 way reversing valve coil.

When replacing the 4 way reversing valve, it should be noted that the 4 way reversing valve cannot withstand high temperature. When replacing the 4 way reversing valve, wrap the 4 way reversing valve with wet cotton cloth to avoid burning the 4 way reversing valve. The reversing valve enters the water. If the water enters, the water must be dried and then the copper pipes are connected one by one.