Wiring diagram of vent actuator air conditioner indoor fan?

The wiring diagram of the indoor fan of the air conditioner is shown in the figure:

The air-conditioning fan is a new type, energy-saving, high-efficiency, variable-speed, low-noise centrifugal fan. It can implement stepless speed regulation, especially suitable for ventilation and ventilation places with strict noise requirements and a large range of air volume changes. It is an ideal supporting product for air conditioning, purification and other industries.

The air-conditioning fan is mainly composed of a casing, an impeller, an air inlet and an outer rotor motor.

Chassis: The whole is made of galvanized steel plate, or high-quality cold-rolled plate. Its shape is smooth, heat-resistant, moisture-resistant and durable.

Impeller: The forward multi-wing circular arc blade is riveted to the front disc and the middle disc. After strict dynamic and static balance correction, it ensures smooth operation, high efficiency and low noise.

Air inlet: processed by the mold, the section parallel to the axial direction is streamlined, so that the gas is smooth and the resistance is small.

External rotor motor: The two shaft ends of the motor are fixed on the air inlet, and the impeller is directly connected to the rotating casing of the motor, which reduces the transmission loss and improves the efficiency of the fan.

When the air conditioner is cooling, it always makes a humming sound. What's the matter?

It is very likely that the installation was not firmly pressed, or the outer shell of the air conditioner was loose, or the air conditioner was not cleaned for a long time, or the quality of the air conditioner was not good. It may be caused by a problem with the installation, or some collisions during work. It is the sound of the fan. It is normal. You need to maintain the normal compressor noise. The compressor will make a sound when it starts. It should be that your compressor foot glue is broken, so it is relatively loud.