unburned pellets being pushed out of burn pan

[BrianN]

In the past few days our Harman Accentra has been pushing unburned pellets out of the tray. Our feed rate is at 2 and there is a large amount of burning pellets in the tray, over filling. Plus, there are a lot of sparks and the flame is big and very active. I have never seen it like this before.

 

[Harmanizer]

I would check your venting first in case of any build up.Give it a good cleaning and see if it helps.A plugged vent will cause this.It could also be the E.S.P. probe.Make sure it's clean of ash.

 

[heat seeker]

Sounds like an airflow problem to me, too. Clean, clean, clean.

 

[camdids]

I had the same thing once. Cleaning is the cause. I had a good carbon build up in the pot , causing the pellets to funnel through a smaller gap and flow over.
keep the Pot clean. Some Pellets create more carbon than others, so that's another cause.