Question about Heating & Cooling
Several of things come to mind: Have you changed the type (Brand) of pellets, recently?
Have you had your chimney (stack) cleaned in the past year? Is the fresh air intake functioning properly? Is the auger feeding to much or to little pellets?
Changing brand of pellets - Not all wood pellets are made the same. If you recently changed brands, you will need to tweak your stove to handle this new brand. This will affect how the auger feeds.
If you chimney (stack) hasn't been cleaned in the past 12 months, it may be partially clogged with creosote and not drawing properly and it is liquefying and running back down the chimney and not allowing for a clean burn. And could cause a chimney fire.
Fresh air intake: If that's not functioning properly, you're getting incomplete combustion. Which will cause the black tar looking substance you described. Couple that with changing brands of pellets and you have a problem.
The above are the first things that came to mind. I hope it steers you in the right direction to troubleshoot the problem. Please let me know.
Posted on Mar 28, 2011
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Posted on Jan 02, 2017
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