Harman P61 Black marks on Fire Bricks in fire box?

might be wrong here, but I believe that your feed adjuster simply changes the maximum amount of time that a stove can feed in a worst case situation, and has no bearing on the combustion blower fan speed. If you plug a DDM into the board, you'll see that by changing the feed adjuster, there is no change in the voltage to the combustion blower.

The feed adjuster should always be on 3-1/2 - 4. For instance, at the original setting of 2-1/2, and there is a consistent demand for heat, the feeder will run a maximum of about 25 seconds per minute. In most cases, it wont run that much, you're just setting your upper limit for feed. The only problem would be when its really cold out, you might actually want more feed than that.....maybe you need it to run for 30 secs per minute? who knows? But what will happen is that the fire will begin to burn further back in the burnpot, closer to the auger. In this case, what will happen is actually less burn, because there isn't enough fuel in the burnpot to burn. The fire will tend to burn closer to the auger as well, causing auger erosion....augers aint cheap!

We had a customer yesterday who had their feed set to 1, haven't cleaned their unit (Accentra FS) since it was installed in November. The complaint to the tech was poor heat, and at night, when they really needed it, the stove would go out. Well, problem one was poor maintenance....unit was filthy. Secondly, the issue was the feed adjuster. Set as it was to 1, the feeder could only run a maximum of about 10 secs per minute. At 15 degrees below zero, your feeder is going to want to run more than that. What was happening here is not enough fuel, and the pellets were burning out prior to getting another charge of new pellets out of the auger. I am glad it was only 4 months old, as likely the auger would be eroded before long. Asked the customer on the phone if they read the owners' manual. No. Asked the customer if they watched the included DVD. No. Didnt bother to ask if they went on YOUTUBE and watched the cleaning videos there. Customer is a nice person and all, but when you spend that much on a stove, I would suggest learning how to properly maintain the unit. When asked why the feeder was set to 1, they stated they wanted to use less pellets. This would actually be correct, until your pellets became the limiting reagent in their fuel/air/heat reaction. Then the stove goes out.

 

Thanks LW
That feeder adjustment should be on the recommended setting The older panels the recommended setting was 3 and the newer panels it is 4. Thanks for explaining. I will let you know how that works.

 

3 0r 4, Don, still better than 1......

 

Yes Sir!

 

Feed adjuster is always on 4. I've noticed that there is a big difference depending on how much heat is required. If I was on a heat setting of 2.5 or so like in your pic, my flame would be on the lazy side. If it was on 4, my flame would be a lot more active.

 

Don, could be just the picture but if lazy flame is what you are concerned with, it's because that burn pot has too much ash in it. It is covering every row of holes so the fire is starved for oxygen. When my burn pot gets to that level of ash, all the way to the edge like in your picture, it burns lazy too; it's to be expected. I always try to keep at least two rows of holes free of ash buildup. Why do I feel like I'm telling you something you already know?