Blower Compartment Cinders e-2400

[stratford 50]

I have started vacuuming the Blower/ solenoid compartment as I see many small cinders/black coals in this area and one got into the squirrel cage on the blower and stopped the blower from turning.  I contacted CB and they suggest keeping the coal bed below the air holes inside the firebox which I try to make sure this happens, my thought is the passage to the reaction chamber gets plugged between burns and once enough pressure builds it blows into the blower/ solenoid box? Any thoughts?

[stumper]

I have am E2300 and find soot and cinders in my blower box as well.  In my case they are small and never caused an issue, but I thought it could.  I am particularly caution when I get into the box that I do not know crap into the fan.  I suspect that they come from the occasional flash over when the door is closed. These flashes are close to being explosion like and blows soot and cinder several feet out the chimney and smoke out my control box.  To get smoke out my control box it must first get into the blower box then up the electrical conduit.

I thought my blower box would benefit by having small lip around the fan opening but I have not taken the time to install one.

[Cass007]

Stumper ... I have the E-Classic 2400 as well. Keeping the coal bead just below the side and rear air holes will help keep cinders out of the cage. I have also experienced, when burning crap wood, like partially papered rounds, it will prevent the blower from creating a good downdraft with the door closed and the flu shut and the box will pressurize and push soot into the rear compartments. I have learned to burn this wood sparingly and always work the center box section to free up any blockages when burning it.

I'm in year 3 now with this furnace and am slowly getting dialed in better each year. The type of wood used, how long it has dried, the size of the pieces all seem to have a direct impact on how hot and efficient the burn is.