Samsung RHF025EE Service Manual page 76

9-4-15 When excessive noise is heard
Is the unit making excessive noise?
Are Heat Exchange Element
and Filter installed properly?
Are Filter well cleaned?
Are Heat Exchange Element well cleaned?
Is there any substance inside the Duct?
Is Fan Motor working properly?
Replace or repair PCB.
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Yes
Yes
Yes
Yes
Yes
Yes
No
Install Heat Exchange Element and
filter properly.
No
Clean Filters.
No
Eliminate Dust or other substance.
No
Eliminate the substance.
No
Measure RPM and fix it.
9-15