Enviro Mini-A burn pot liner deterioriting

I bought our Enviro Mini-A just under a year ago, January 2010, and have burned almost a couple of tons since then. This fall, just starting on our second ton, I notice the burn pot liner had a hole, so that two holes blended into one. I called our dealer to order a new burn-pot liner. The company sent the wrong liner, twice. Six weeks after my first call, we finally got the replacement part, but by that time, our burn pot liner had severely deteriorated to a quarter-sized hole.

Are we doing something wrong? It was professionally cleaned last summer (after 4 months of use). I clean out the burn-pot liner a couple times a week, after 2-3 bags of pellets. As you can see by the pictures -- it actually looks rusty! First, a little piece will warp, then it burns away, creating a bigger and bigger and bigger hole -- In a stove less than one year old.

I've been using the new burn-pot liner for a couple of weeks now, and I can see the same place now has a little different color, browner than the rest of the burn-pot liner. I think it's just going to burn another hole. The hole is near the place where the fan blows air into the liner. Is this a basic defect of the stove, or do we have a setting wrong?

Our dealer is not very helpful. They appear to be displeased that we are bothering them with this, and offer no suggestions. (They just grunted when we showed them the hole). They originally installed the stove. We caught this before the 1-year warranty, but, I see that on stove parts, we have a 7-year warranty. Will we need a new burn-pot liner every year?

Thanks for your advice.

A liner-cleaning tool came with the stove -- a hard piece of metal that fits right into the bottom of the liner, and cleans it out nice, getting into all the corners. It also fits nicely into the sides. I scrape it a few times to get the crud off, perhaps a tablespoon or two when I clean it.

Thanks for the contact information for Enviro. We've tried to contact them before (before we bought the stove), and they just passed us to a dealer. Their web site, I just checked, has no working customer input option.

Thanks for the contacts. I called the number above, and they gave me their Technical Help number, 888-285-2224. I left a message there for Al. I also sent the pictures and info to the email address given me above. I'll let you know when I hear back....

I have an update on my first posts. Seven weeks ago I installed the new burn-pot liner -- and it is showing signs of burning out like the old one. It turns green, then starts to crack, then starts to fall apart. (see picture below- taken today, at 7 weeks of use). The place where the hole will form is green, and I can see a hairline crack in the middle. It won't be long now... It actually looks corroded (the last one did too).

I contacted Enviro (thanks for the contact info), and I've been emailing a technician called Don. He has been very responsive, and seems concerned. Since the problem is adjacent to the igniter hole, one theory is that the igniter stays lit too long. However, I put my watt meter on it, and I could tell exactly when the igniter went off, and it seems to be right on time, working correctly.

By the way -- when we got this new burn-pot liner, 7 weeks ago, we had the same problem as the last poster -- we would get a box with the right part number, but the liner was the wrong shape. It took several tries to get the right one. So, I'll start earlier this time -- I think the Enviro hardware has a 7 year warranty.