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-   -   Day & Night Gas heat INOP (https://www.askmehelpdesk.com/showthread.php?t=193246)

  • Mar 10, 2008, 06:24 PM
    richwho
    Day & Night Gas heat INOP
    I have a Day & night model 588, the ignition circuit board LED indicates a fault #8 (internal control fault). Are there voltage checks to confirm that the circuit board needs replacement.
  • Mar 10, 2008, 06:28 PM
    hvac1000
    Looks like circuit board.

    8 Flashes Internal Control Fault •

    You might check all the grounds from the furnace back to the main electric panel.
  • Mar 10, 2008, 06:47 PM
    richwho
    Quote:

    Originally Posted by hvac1000
    Looks like circuit board.

    8 Flashes Internal Control Fault •

    You might check all the grounds from the furnace back to the main electric panel.


    Thanks! I will check the ground connections. If this does not work I will need a replacement circuit board. Do you know what the replacement circuit board is for the original 48SS500177 board.
  • Mar 10, 2008, 07:35 PM
    hvac1000
    I find no listing for that part number.

    Example of numbers below

    http://heatcoolparts.com/webpages/Ca...nControls.html

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