5-3) Fan Noise
! The fan is sending out cold air to circulate it through the compartments.
When the air is touching the surface of louver or liner wall, such sound can make.
Fan is damaged or
transformed ?
Fan is touching the
surround ?
Start
Change the fan.
N
Y
Set it right not to touch.
Y
Fan-motor assembly is
moving or shaking ?
N
Set it right not to move.
Y
Motor has its own noise or
vibration when working ?
N
Change the motor
assembly.
N
Y
Explain to the customers
how fan is working to
circulate cold air in the
compartments.
Remarks
Failure Checkup & Troubleshooting
Page 18
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