Page 2 of 2 FirstFirst 12
Results 14 to 17 of 17
  1. #14
    Join Date
    Oct 2007
    Location
    Washington
    Posts
    8
    Quote Originally Posted by BaldLoonie View Post
    The 3798 is the newest board. Not sure what the W-R designation is, we only use the OEM parts. Earlier boards, like the 3076 were trouble.
    Seems they tend to generate a considerable amount of heat in the center of the board...right around the resistor packs. I have checked any heat frustrated areas hoping to possibly find a cold solder joint, but to no avail. I just usually like to know "why" something failed compared to just swapping it out and calling it good. Thanx for your input...
    JD

  2. #15
    Join Date
    Oct 2007
    Location
    Washington
    Posts
    8
    Quote Originally Posted by second opinion View Post
    You can use the W/R 50A65-843 furnace control board it is a universal board designed to replace all 50a65 series boards. There is a jumper that needs to be installed in the 12 pin conector on the furnace wiring harness for Trane units. There is nothing special about the board that would make it BETTER that I can see from the specs. I am wondering why the tech pointed you in that direction rather than checking to see why the furnace cut off. Have the next tech check the unit for propper grounding to the unit and bonding on the burner manifold. Voltage nuetral to ground should be less than 10 volts. hope that helps.
    The -843 is the board I ordered and hope that it turns out to be more dependable than it's predecessors. I believe the tech pointed me in that direction because, 1) He couldn't speak English very well and I could barely make out with what he was saying, 2) He charged me as much for the igniter as they charged me last time for the board replacement, and 3) he wanted big bucks for the -476 board he had with him. I do believe it's time to call a "different HVAC mechanic and give them a chance. Thanx again for your post...it is greatly appreciated. V/R,
    JD

  3. #16
    Join Date
    Dec 2007
    Location
    Norfolk, VA
    Posts
    3

    error code

    Hey.. wmrra82 what error code were you getting from the circuitboard? it wasnt a 4 blink high limit code was it?

  4. #17
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,913
    Since he said it might be the board, and then told you what board to get.
    If something else is wrong, he doesn't have to fix it for free, and your stuck with a board you don't need.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

Page 2 of 2 FirstFirst 12

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