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  1. #1
    Join Date
    Dec 2005
    Posts
    1

    Hmm

    I have a York Multiposition GF8 furnace GF8125D20MU11 which has been running for about 6 weeks in my attic (boy was that fun getting it up there!).
    Following a power outage the furnace stopped working.

    The diagnostic LED flashes 7 times which indicates:
    "7 FLASH: This fault code indicates that the flame could not
    be established. This no-light condition occurred 3 times (2
    retries) during the call for heat before locking out. This may
    be caused by low gas pressure, faulty gas valve, faulty hot
    surface ignitor or burner problem."

    When I power the furnace off and then on, the vent blower starts, the hot surface ignitor glows bright orange, the gas ignites for a few seconds and then stops. As you all know, this occurs 3 times before the system locks out and the LED comes on.

    From reading previous postings I have removed, cleaned and reinstalled the Sensor Rod with emory cloth and fine sandpaper. I have checked the connections on the yellow wire for the Sensor Rod back to the IC board and there are no disturbances. Nothing else about the IC board seems out of place either. I have also tested the main blower assembly and it still circulates air through the system perfectly.

    Any further advice would be greatly appreciated!

    TIA

    Stuart


  2. #2
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,775
    Its only in for 6 weeks.

    Its under warranty then, call the installing contractor and have them come out and fix it.
    Contractor locator map

    How-to-apply-for-Professional

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

  3. #3
    Senior Tech Guest
    I only use emery cloth when my bench grinder is in for repair...

  4. #4
    Join Date
    Feb 2004
    Location
    chicago suburbs
    Posts
    4,422
    i use my belt sander. i can have them clean in under 10 minutes.
    FILL OUT YOUR PROFILE!!

  5. #5
    Mod2 Guest
    stumap:

    Hello,

    And welcome to HVAC-TALK. The purpose of HVAC-Talk.com is to provide a fun meeting and learning place for people “in” the HVAC/R Industry. This site is one of a kind and one the largest on the internet.

    This site is for industry professionals and folks seeking HVAC/R advice and knowledge. Please do not ask for step by step instructions. That is our job and our livelihood. We are generous, but only to a fault

    To remind you of the site rules, Forum Rules
    This site rule is why professionals on this site can not help you, and/or give out prices.

    Mod2

  6. #6
    Join Date
    Feb 2003
    Posts
    16
    sounds like your flame sensor is bad,or when you put it back it was not positioned correct.

  7. #7
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,775
    Doubtfull its the flame sensor, thats why he needs to call his contractor to come out and fix it.
    Contractor locator map

    How-to-apply-for-Professional

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

  8. #8
    Join Date
    Sep 2005
    Location
    NC
    Posts
    1,522
    Could it be a ground issue?

  9. #9
    Join Date
    Dec 2005
    Posts
    3
    use steelwool to clean the flame sensor.
    or you need check ps switch,

  10. #10
    Join Date
    May 2004
    Posts
    12,275
    Originally posted by Mod2
    stumap:

    Hello,

    And welcome to HVAC-TALK. The purpose of HVAC-Talk.com is to provide a fun meeting and learning place for people “in” the HVAC/R Industry. This site is one of a kind and one the largest on the internet.

    This site is for industry professionals and folks seeking HVAC/R advice and knowledge. Please do not ask for step by step instructions. That is our job and our livelihood. We are generous, but only to a fault

    To remind you of the site rules, Forum Rules
    This site rule is why professionals on this site can not help you, and/or give out prices.

    Mod2

    I think this said it all here gents...


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