Harman 52i pellet stove has a humming/whirring fan sound in chimney that sleep preventing.

[wallyspam]

We bought a house we havent moved into yet that has a Harman 52i stove. The stove itself is operating well and the fans are what I would call normal volume. Upstairs in our bedrooms we can hear a whirring sound that a fan seems to be making in the chimney. We have yet to pull out the stove to clean it, it was just cleaned when we signed papers, but I was wondering if anyone has had this issue or know what this could be. I hear it also in the basement near the chimney and on the 2nd floor. Our stove is on 1st floor but we do not hear it there.

I am going to have a stove company come out to look over the stove and give me some tips since I have never owned a pellet or wood stove before. I wanted to first ask here in case this could be a common issue.

 

[Dataman]

Let it cool down and clean the combustion blower. Even if they said it was cleaned do it yourself. Could be dirty or fan blade bent

 

[Peterfield]

The OE combustion blower is not a high quality piece of hardware. I am on my third blower since 2014 and the noise level is back up again so I’m looking to find another brand and see if it makes a difference in less noise and longevity.

 

[Washed-Up]

If you happen to have the older combustion blower cover by chance there is an updated version...Harman updated the CB cover, the updated version has a pin or tooth that keeps it in place so it doesn’t vibrate. I saw a thread on another forum awhile ago. The Harman part number of the new one is 1-10-574087A