Results 1 to 10 of 10
  1. #1
    Join Date
    Aug 2012
    Posts
    21

    Bryant condensing furnace rollout continueous trip

    havent worked on may Bryants but this Plus 90i is horizontal left in one tight spot! There is no model or serial anywhere but it has to be a 340-AAv or 350-AAV or MAV. ANyway it continues to trip out on the manual reset rollout switch. I confirmed clear combustion and flue exhaust pipes and no restrictions in return air and all supply vents open. blower is operational. The enclosed burner box does get quite hot when it trips so I'm sure switch isnt weak. homeowner hasn't had it running for about 2 years (using other heat in house)

    any suggestions on this one??

  2. #2
    Join Date
    Feb 2010
    Location
    Calgary, Alberta
    Posts
    1,093
    Secondary HX plugged probably.
    Combustion analysis will verify this.

    Does the burner box smell horrible?

  3. #3
    Join Date
    Dec 2011
    Location
    somewhere between here and there
    Posts
    478
    plugged...maybe.....corroded and comprimised absolutely....furnace is done son.


    Please, Please Please......keep the Factory Smoke in the Wires!!!!!


    Is it Rum'Oclock yet???

  4. #4
    Join Date
    Aug 2012
    Posts
    21
    Right. Never had access to our analyzer today, but as it is not very (3-5 years) old I wouldn't suspect HE clogged or cracked, but anything is possible. Thanks

  5. #5
    Join Date
    Aug 2012
    Posts
    21
    Oh and as far a smell in burner box it was hard to tell in the mouldy, wet and rat **** infested crawl. Yes that bad. Not to mention 2 feet clearance!

  6. #6
    Join Date
    Feb 2010
    Location
    Calgary, Alberta
    Posts
    1,093
    Is the furnace installed in such a way to promote condensate drainage? ie sloped slightly foreword?
    If not she's done.

    Pull the collector box off after you do your analysis, and show the customer.
    You'll see....

  7. #7
    Join Date
    Dec 2007
    Posts
    4,670
    possible that, not knowing your location or climate, not using it allowed condensation to to freeze, expand and crack HX.
    The Food Stamp Program, administered by the U.S. Department of Agriculture, is proud to be distributing the greatest amount of free meals and stamps EVER.
    Meanwhile, the National Park Service, administered by the U.S. Department of the Interior, asks us to "Please Do Not Feed the Animals". Their stated reason for this policy "... the animals become dependent on handouts and will not learn to take care of themselves."
    from an excerpt by Paul Jacob in Sun City, AZ

  8. #8
    Join Date
    Jun 2003
    Location
    Chicago, IL
    Posts
    4,358
    remove the condensate trap and dump it out in a sink. If its full of rust the heat exchanger is shot, Fortunately Carrier will pay for labor. Unfortunately you have to be a Carrier dealer to get the $.

  9. #9
    Join Date
    Nov 2007
    Location
    Mississippi
    Posts
    1,307
    I have seen HX not last longer than a year or two. Anything is possible.

  10. #10
    Join Date
    Aug 2012
    Posts
    21
    The pipes are sloped properly. I pulled out blower and looked at primary HX. No water or staining in housing. Some rust on ends as it meets cabnet. I'm on the wet coast. Relatively mild and wet winters. But with it been in operation for 2 years we did have really cold winter 2 years ago! Dirt crawl that is not sealed from elements. Loud inducer motor that sound like bearings are going. Pulled and inspected inducer wheel. Put it all together and it ran in both stages for 25+ min no prob until I ended call for heat and started again. Top burner where rollout is located is causing trip. They installed it draining into a hole they dug in dirt! And observed water draining
    Found out it was installed 6 years ago. Think your right. It's toast. Wil finally be able to do combustion test tomorrow. New analyzer arrived today.
    Thanks all of info. I'll be sure to inform on verdict!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event