Hitzer 503 Fan Noise

I am a happy 503 owner and have used this stove to heat my house for the past few years. Runs like a champ. Only problem is fan noise when running at top fan speed. I use a Dial-A-Temp controller to be able to vary fan speed and this is a nice feature. Whenever the fan is running at max speed ---Dial-A-Temp in circuit or not--I get a clanking noise. This year, I vacuumed dust from around the fans before firing up so dust is not an issue. Anybody with any ideas? Get new fans? Watch video to see the stove and hear the sound I am referring to. Thank you.

Don't know, but my 50-93 my first year had a similar noise so I popped off the end plates on the blower & found some real small pieces of coal got in there somehow--probably in through the center slots on the motor--got a few lil pieces out & figured for dust--I cut lil pieces of foan & put the ends back together--now I make sure I don't spill anything off the back of the stove coal wise.--be nice if your problem turns out to be that simple

On my 503 it started making that noise last year. Had to replace the motor on the right side. Looking at the stove it would be the right side motor. Simple to fix. Hope that helps.

Beeman,I had the same problem with my one of my fans this year it was the exhaust baffle on the fan,I bent it a bit to make it tighter.You can check it with a long screw driver,just put some pressure on it and see if that's the problem or not just watch the wires for the power.Keepaeyeonit

And for a replacement motor look into PSC motor. (permanent split capacitor) found at Grainger and Electric Motor Warehouse.com

Beats the H$%& out of those shaded pole motors...sealed ball bearings and runs cool @ 1/2 the amps.

Keepaeyeonit takes the grand prize!!! Your photo of the fan, including exactly where to apply pressure with a screw driver to determine if the baffle was vibrating and making noise, helped me diagnose and solve the problem. Stuck a thin sliver of wood between side of baffle and the stove body--fan is as quiet as a church mouse!

How did you bend the baffle to stop the noise on your stove--just pushing on the screwdriver or in a different way?

The Forum is a great resource for us all. Thanks so much.

Beeman,I removed the fan from the stove bent the output on the blower in some and also bent the mounting plate back so it put pressure on the whole assembly to keep it tight when I reinstalled it and so far it's been working but right now I'm shut down.Keepaeyeonit

Thanks, Keepaeyeonit. I will look for my next shut down opportunity to do some bending. Usually happens when I have to go out of town for a few days. In any case, fan running quietly with my sliver of wood jammed in there for now. Thanks again.

Hay Beeman how's the fan working? Keepaeyeonit

Hey Keepaeyeonit, the fan is cruising quietly along on these cold days and nights. The sliver of a paint stick that I stuck through the side grate and between the fan cowling and side of stove has been holding its own. Was thinking about how my short-term fix to get me through the season could actually be left in permanently. Alternately, I could tear things down for a more elegant fix after the heating season. Thanks again for your great ideas and info--solved my problem and keeps the Hitzer cranking! --Beeman

Elegant huh????