The Whistling Noise From The Indoor Unit In Low Wind Mode - Samsung AC071MN4PKH Service Manual

Troubleshooting

4-4-8. The whistling noise from the indoor unit in low wind mode

Is there abnormal noise like the whistling
from the indoor unit in low wind mode?
Yes
Is there abnormal noise in a fan or a motor?
No
Is there abnormal noise in the booster fan?
No
Check normal startup
Replace a fan a motor.
Yes
Check normal startup End the service
Replace a fan a motor.
Yes
Check normal startup End the service
4-32
[Booster Fan]