Glass issue: is this common?

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HillofBeans

HillofBeans

Member
Feb 15, 2014
26
Pennsburg, PA
Have had my accentra 52i for two weeks. Love the heat. I recently did a cleaning on Monday and noticed what I thought was the glass etching from the inside. After rubbing and rubbing, I could not get the blemish off. Fast forward to today. The unit had shut down for about 45 minutes, cool enough to clean the glass. While doing so, I notice the etching is actually happening on the outside of the glass. There appears to be a film of some kind that has come of, I assume some kind of anti reflective coating. The problem is when the stove isn't running, the blemish is noticeable. My question is, is this common? Here's a pic of the glass. image.jpg You can see that the blemish is visa let at south southwest position of the compass insert. Should I contact my dealer?
 
Unfortunately, there seem to be a lot of issues with Harman glass (can't speak to any other brands, as Harman is all I've owned). According to Harman engineers, you should be scraping your burn pot "several times per day", to keep the flame from scorching your glass. The more you remove the ash, the more the flame will stay off of the glass and help to eliminate these issues.
 
Enigma869 said:
Unfortunately, there seem to be a lot of issues with Harman glass (can't speak to any other brands, as Harman is all I've owned). According to Harman engineers, you should be scraping your burn pot "several times per day", to keep the flame from scorching your glass. The more you remove the ash, the more the flame will stay off of the glass and help to eliminate these issues.
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Thanks . I scrape every morning and evening. Wasn't aware of this issue. Sounds like something I'll just have to deal with. For a couple grand I didn't expect this. Also noticing a slight vibration/ grinding of metal sound from squirrel cage. Hope this doesn't get worse. Thanks again for the advice.
 
Scrape your burn pot several times a day!? I never scrape my burn pot, no need to. Sounds like a bad design to me!
 
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Try a less ashy pellet. When I used bargain pellets the top of the flame would lick the glass due to the overbuild of ash on the burn pot lip. It acted like a flame guide almost. Cleaner pellets didn't cause this. Have you tired increasing the feed rate. Maybe that will help pug the ash off sooner.
 
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I should have clarified that the issue isn't the burn pot itself. It's exactly what John193 referred to. The ash build up on the lip of the burn pot re-directs the flame straight into the glass. My dealer asked a Harman engineer about the issue and according to what he told me, the engineer stated that the objective should be to keep that flame off of the glass or it will "etch" or damage the glass. This is why so many end up with a hazy film on the glass that they can't remove. I still say that it's poor engineering. As I told me dealer, a hot flame should not cause any damage to a piece of glass that should be designed to withstand as much heat as the stove can put out!
 
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Where is your dealer? That would have been my first call.

Eric
 
Enigma869 said:
I should have clarified that the issue isn't the burn pot itself. It's exactly what John193 referred to. The ash build up on the lip of the burn pot re-directs the flame straight into the glass. My dealer asked a Harman engineer about the issue and according to what he told me, the engineer stated that the objective should be to keep that flame off of the glass or it will "etch" or damage the glass. This is why so many end up with a hazy film on the glass that they can't remove. I still say that it's poor engineering. As I told me dealer, a hot flame should not cause any damage to a piece of glass that should be designed to withstand as much heat as the stove can put out!
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Understood. Thanks. Doubt they'll replace the glass and it'll probably happen again anyway.
 
Been scraping my P-38 burnpot twice a day for 5 yrs and the glass stays clean even after a ton + thru the stove. I simply can`t imagine how the flame on a Harman could scorch the glass unless diverted by a log set or a crusty ash buildup.
 
Try a more premium pellet. This happened on my XXV when I used omalley pellets. Using a more premium pellet fixed the issue all the time. The omalley ash was clumpy and would stick to the very edge of the burn pot, whereas the other brands would just fall right off.

As a side note I only cleaned my stove once a week no matter how many bags I burned.
 
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john193 said:
Try a more premium pellet. This happened on my XXV when I used omalley pellets. Using a more premium pellet fixed the issue all the time. The omalley ash was clumpy and would stick to the very edge of the burn pot, whereas the other brands would just fall right off.

As a side note I only cleaned my stove once a week no matter how many bags I burned.
Click to expand...
 
Thanks. That's what I'm burning too. Too bad I have a ton and a half in my garage. As far as the ash line goes, it seems to be what you describe as well, but my frame of reference isn't big. I've been burning pellets only for two weeks.
 
I have a somewhat similar blemish on the glass of my 52i as well. Haven't called the dealer about it.
 
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