Question about Goodman GDS80904BNA Open Flame Heater

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Goodman GMP075-3 ignition problem

Hi,
Here is the situation:
Thermostat calls for heat
Draft blower engages and runs
Board clicks and igniter gets glows after a few seconds
Board clicks. Gas valve does not open, Igniter stops glowing, Draft blower stops running, LED on control board goes out. No flush.
I reset the Control board by cutting power to furnace.
LED on control board goes solid red and the same thing repeats again.
I checked continuity from board to gas valve and is ok.
I engaged the gas valve with 24V and gas valve opens and puts out gas
I checked the voltage on gas valve and there is no voltage at any time during the start up.
The control board works fine on cool mode (AC runs fine)

Thanks
Sam

Posted by on

  • joesnopy Dec 22, 2008

    I have the same problem but I have a GMP050-3 model.

  • dwkcool May 11, 2010

    Check your wires running from the board to the valve they had a problem at the plug

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  • Contributor
  • 6 Answers

Bad board,i have had several board failures on goodman

Posted on Dec 31, 2008

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6ya6ya
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Posted on Jan 02, 2017

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WaltGe
  • 46 Answers

SOURCE: no hot surface igniter

This is why swapping parts is never a good idea. It could be a board, pressure switch, or several other issues. I'm a service technician and realize that many furnace issues are difficult to diagnose over the phone, or internet.
Calling a qualified, NATE certified technician to diagnose and repair this properly is probably the best solution that I could suggest. Yes, there will be a bill and it will be expensive, but it will be a lot less so than changing out parts you might not need.

www.natex.org

Posted on Jan 03, 2009

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Pressure switch detects proper operation of DIM, and sends signal to board to begin ignition.
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