1. Welcome Hearth.com Guests and Visitors - Please enjoy our forums!
    Hearth.com GOLD Sponsors who help bring the site content to you:
    Hearthstone Soapstone and Cast-Iron stoves( Wood, Gas or Pellet Stoves and Inserts)
  1. Cheerio

    Cheerio New Member

    Joined:
    Jun 7, 2012
    Messages:
    10
    Hi guys,

    I am new to the forum, my quest for first hand information on US pellet stoves has brought me here. The threads i've seen so far indicate a wealth of knowledge and experience so i hope you can help me.

    We have a Harman XXV pellet stove installed which is making odd noises, sometimes a very sharp loud bang or shot, sometimes quieter duller thuds.

    We are assuming that the dull thud noise is the odd pellet getting caught in the auger mechanism and being crushed, it happens once or twice a cycle and can be ignored with practice.

    The loud sharp cracking sound is more of a concern. This is unmistakable but fortunately infrequent. My interpretation is that it is the meeting of two immovable objects or nearly immovable.

    We are in the UK and Harman doesn't have a big presence here, the pellet/biomass industry is very much a work in progress. Our local distributor (in a neighbouring country) is not very knowledgable and is also new to the harman products so is no help for tech support. Harman tech support are helping but the time difference makes things difficult.

    We have taken the pellet deflector out on harmans advice and also taken the auger out to look for damage or wear which we saw no evdience of.

    If anyone has any suggestions or ideas your assistance would be greatly appreciated.

    Cheerio...

    Helpful Sponsor Ads!





  2. Delta-T

    Delta-T Minister of Fire

    Joined:
    Feb 27, 2008
    Messages:
    3,120
    Loc:
    NH
    the most common culprit for the banging during feeding is the "slide plate". It is installed in the upper section of the "feeder body weldment". If something (usually sawdust) creates resistence in the movement of the slide plate, the pressure builds in the cam system that actuates the slide plate and when it builds up enough pressure, it slips, and the slide plate slams into the feeder body. You can access the feeder body cavity by removing the door on the left side of the feeder body weldment. good luck

    ...and welcome to Hearth.com!
  3. AbetterChimneynm

    AbetterChimneynm Member

    Joined:
    Apr 20, 2012
    Messages:
    173
    Loc:
    SIlver City, New Mexico
    I agree most of the time it is the feeder plate... does the noise happen WHen ever it feels like it or is there a pattern to it?
  4. SmokeyTheBear

    SmokeyTheBear Minister of Fire

    Joined:
    Nov 10, 2008
    Messages:
    12,523
    Loc:
    Standish, ME
    Does your stove have a direct auger drive or is it a chain drive?
  5. Cheerio

    Cheerio New Member

    Joined:
    Jun 7, 2012
    Messages:
    10
    Thanks for the quick responses, it's a 2009 build date on the plate which is direct drive. The noise doesn't seem to have a regular pattern, pretty random and not every cycle.

    It was only installed in feb this year so hasn't been burning for long. Is the feeder plate likely to be the cause after such a short time? Is there a solution to this problem?
  6. AbetterChimneynm

    AbetterChimneynm Member

    Joined:
    Apr 20, 2012
    Messages:
    173
    Loc:
    SIlver City, New Mexico
    I have seen the feeder plates do that on a brand new stove.....I took the plate out and filed down a edge on the new one cleared the problem right up.....But it could be dirty try cleaning the plate and fines box and go from there
  7. Cheerio

    Cheerio New Member

    Joined:
    Jun 7, 2012
    Messages:
    10
    Is it easy to remove?
  8. AbetterChimneynm

    AbetterChimneynm Member

    Joined:
    Apr 20, 2012
    Messages:
    173
    Loc:
    SIlver City, New Mexico
    For the most part yes It can be done easy enough
  9. Defiant

    Defiant Vermont Castings Geek

    Joined:
    Dec 5, 2007
    Messages:
    2,109
    Loc:
    Old Lyme CT
    Cheerio,
    these guys have given you the same advice I would. If you could post up some photos of your install and the brand of pellets you use. I am curious to see the size and shape. My XXV is a 2011 and is extremely quiet, I feel it is the best FS Stove in the US.:cool:
  10. smoke show

    smoke show Guest

    C'mon Joe everyone knows Quads are the best... ::P
    Defiant likes this.
  11. Defiant

    Defiant Vermont Castings Geek

    Joined:
    Dec 5, 2007
    Messages:
    2,109
    Loc:
    Old Lyme CT
    Aren't some of the parts made in China?:rolleyes:
  12. smoke show

    smoke show Guest

  13. AbetterChimneynm

    AbetterChimneynm Member

    Joined:
    Apr 20, 2012
    Messages:
    173
    Loc:
    SIlver City, New Mexico
    Quads are made in china if i am not mistaken
  14. smoke show

    smoke show Guest

    you are partially mistaken.
    IMAG0202.jpg
    Defiant likes this.
  15. Defiant

    Defiant Vermont Castings Geek

    Joined:
    Dec 5, 2007
    Messages:
    2,109
    Loc:
    Old Lyme CT
    I burned a Quad FS CB2000 for a year, it was a good unit. I like Quads, but I like Harmans better.
  16. smoke show

    smoke show Guest

    Just ribbin ya buddy. I like cheap beer! :p
    Defiant likes this.
  17. Cheerio

    Cheerio New Member

    Joined:
    Jun 7, 2012
    Messages:
    10
    Our XXV and our pellets. These are to a european standard, not sure how that compares to US pellets. I would be interested in your thoughts. Not the most flattering angle for the stove...

    Please can somebody explain how to remove the slide plate and what/where to file it?

    Attached Files:

  18. AbetterChimneynm

    AbetterChimneynm Member

    Joined:
    Apr 20, 2012
    Messages:
    173
    Loc:
    SIlver City, New Mexico
    I will post a picture of the box from a 1200 I That says made in china then i will be correct again!!!;)
  19. AbetterChimneynm

    AbetterChimneynm Member

    Joined:
    Apr 20, 2012
    Messages:
    173
    Loc:
    SIlver City, New Mexico
    That stick was made in the usa lol, They started having em made in china cause it is cheaper. When they switched production we bought alot of 1200's for 500 dollars or so because they offered us a great deal. We still have some of those boxes that we have thrown in storage :(
  20. smoke show

    smoke show Guest

    All Quads?
    Got any other boxes?

    PM response. This thread ain't about Quads or China.
  21. Don2222

    Don2222 Minister of Fire

    Joined:
    Feb 1, 2010
    Messages:
    7,146
    Loc:
    Salem NH
  22. AbetterChimneynm

    AbetterChimneynm Member

    Joined:
    Apr 20, 2012
    Messages:
    173
    Loc:
    SIlver City, New Mexico
    Sorry did not mean to drag off topic :(
  23. Cheerio

    Cheerio New Member

    Joined:
    Jun 7, 2012
    Messages:
    10
    Please can somebody explain how to remove the slide plate and what/where to file it?
  24. Defiant

    Defiant Vermont Castings Geek

    Joined:
    Dec 5, 2007
    Messages:
    2,109
    Loc:
    Old Lyme CT
    Sorry about that, caught some of us while enjoying libation time. Pellets look to be loosley bound, (or not as tight) do you get much dust in the pellet bags? Follow link it will get you started
    Harmon XXV fines box
  25. thedude110

    thedude110 Feeling the Heat

    Joined:
    Aug 12, 2011
    Messages:
    279
    Loc:
    Central Connecticut
    Not sure what the slide plate is, but I like your setup. You're going to love that stove!

Share This Page