Ask Experts Questions for FREE Help !
Ask
    ammory's Avatar
    ammory Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Dec 22, 2007, 04:20 PM
    Anyone know the diagnostic codes for a goodman furnace?
    Hi, I have an older model goodman furnace that powers up the vent fan and proceeds far enough in the sequence for the electric igniter to glow, but then never releases gas to complete ignition. I replaced the gas valve last year, so I am hoping it isn't this again. I am getting an error code on the panel that blinks once. My furnace does not list the meaning of the error codes: does anyone know what the codes for this brand are? If so, please tell them all to me so I can print a copy to tape up near the furnace for future reference.
    Thanks
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
    Ultra Member
    		  
    #2

    Dec 22, 2007, 05:38 PM
    If it goes as far as the hot surface ignitor glowing its going to be flame failure. Make sure the gas valve is on. If you have a volt meter check the two wires on top of the gas valve for 24v, about 30 seconds after the ignitor starts to glow it should get voltage and you should hear it click.
    johnny58's Avatar
    johnny58 Posts: 8, Reputation: 1
    New Member
    		  
    #3

    Jan 2, 2009, 09:29 AM

    T-Top has a good answer. Take that a step further and "manually apply" 24 volts from the transformer to gas valve switch after igniter glows. This will tell you two things: that the gas valve is good if furnace fires up and that You have a control problem: wiring or control board or sensor.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
    Ultra Member
    		  
    #4

    Jan 2, 2009, 12:30 PM
    I sure hope they solved this problem long before you came upon it! Notice the post date?:confused:
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Goodman furnace GMNT080-4 furnace runs good for a while then has to be manually reset [ 5 Answers ]

I have a Goodman GMNT080-4 (90%). I'm having the same problem As Streatherg did back in the Nov 2006 question. I reviewed his article and tried Every thing on there but seems to be doing the same thing. The furnace kicks on for about an hour then locks out and has to be manually reset threw...

Furnace diagnostic code [ 1 Answers ]

Concord furnace diagnostics : 3 flashes : Pressure switch is open while inducer is on.

Goodman Furnace - Won't Light, No Codes [ 3 Answers ]

Eleven year old Goodman gas furnace. The main vent blower will start, but that's where things end. The draft inducer motor doesn't start and nothing else in the chain obviously happens after that. The LED on the board stays red and never flashes any codes. I checked the voltage coming into...

View more questions Search