Quadrafire Contour - no vacuum

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cmbdiesel

New Member
Dec 30, 2013
2
United States
The Quadrafire Contour pellet stove in my rental seems to be lacking vacuum.
Symptom - no auger movement, no pellet drop.

Bypassed the vacuum switch, auger works fine.
Cleaned flue pipe, looked down into combustion fan area, seems pretty clean.

After reassembly, the auger worked for a minute or so, then quit.
Sucked on the vacuum line and the switch opened and auger began turning.

Bypassed switch again and let the fire light.
Fire was very lazy and sluggish.
Seems to be not drafting through the fire pot.

Fan itself blows a good volume of air out the flue.
Must not be creating the vacuum needed in the pot for some reason.

Anyone ever have this issue?
Is it just a case of taking it all apart (PITA...thanks Quadrafire...) and resealing every joint I can find?
Where is the inlet to the combustion blower? Thinking it may be clogged, but the fire pot seems to just be open to the air under the fire place floor...
Seems kind of strange, figured there would be some kind of duct work.

Anyone got pictures of their Contour under the fireplace floor?

This stove was used when I got it, so not sure it isn't missing something.

Any ideas/assistance from the forum would be greatly appreciated.

cmbdiesel


Oh yeah... Hi all, thanks for having a great forum. Visited many times, but this is my first post.
 
Have you pulled out all the baffles and vacuumed back there? I'd also pull out the blower and vacuum the housing. A lazy wispy flame is generally some type of blockage in the stove somewhere. My guess is somewhere between the blower and the termination cap or behind the baffles.

If running it with the vacuum switch jumped and you still have a lazy flame, I'd be looking for a giant ash clog in the system somewhere. Ash can hide in some tricky places....
 
+1 Definitely sounds like an airflow problem. Also ensure your door gasket seals completely (on 3 sides if you have a top- or bottom- airwash).

Where is the inlet to the combustion blower? Thinking it may be clogged, but the fire pot seems to just be open to the air under the fire place floor..

In most Quads, the combustion air enters the firebox from the ash bin area through the holes in the burnpot. The vacuum exists only in the firebox... the ash bin area is enclosed to contain any smoke from dumped ashes, but is not under vacuum. The holes in the burnpot restrict the airflow to create the vacuum.
 
Thanks guys... I'm going to try cleaning behind the plates tomorrow. Not sure what the heck I was thinking when I neglected to take those out during the initial troubleshooting session...
Maybe I just really wanted to take the entire back of the stove apart....;)
 
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