CASE1

If the exhaust fan is not checked. (1)

 Photo


 

Situation

The impeller does not rotate because the fan belt cannot transmit the motor power due to looseness or deterioration of the belt.
 
As a result, the exhaust air volume decreases.
 
It may adversely affect your body.


Such indications

The face velocity decreased. An air volume shortage warning occurs. The interior is smelly.