Harmon p43 combustion blower

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Yooper Doug

New Member
Oct 20, 2017
9
Michigans Upper Peninsula
HI everyone, new to the forum and new to pellet stoves!
I have a brand new p43 and it works great. I've only operated it twice ,alls fine except in thermostat mode, the combustion blower really makes a hi pitch . It doesn't do it during firing,just after the fire is out and maybe 5 minutes before shutting off. I noticed opening the firebox door and the high pitched whine stopped, as if it was starving for more air.
Like I said,under fire it doesn't do this. Only when in the longer "cool down" mode. Any thoughts from you Pellet stove experts would be greatly appreciated