What are the reasons for the sudden loss of air from the Nissan Sylphy's air conditioner?

[DeBrantley]

The reasons for the sudden loss of air from the Nissan Sylphy's air conditioner include: poor motor lubrication, reduced starting capacitor capacity, and prolonged motor usage. Here are the relevant explanations: Poor motor lubrication: If the fan does not rotate, it may be due to insufficient lubrication of the motor, which prevents the motor from driving the fan blades after installation. Adding lubricating oil can resolve this issue. Reduced starting capacitor capacity: The capacitor's capacity may decrease, leading to a reduction in the motor's starting torque, making it unable to drive the load. Replacing the starting capacitor can fix this problem. Prolonged motor usage: The motor may wear out, and the motor's bushing can become easily burnt after wear. This also increases the motor's internal resistance, reducing its load-bearing capacity and preventing it from driving the fan blades. Replacing the motor is the solution.