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furnace won't light

have a Intertherm furnace with a united technologies 1018 controller, controller hums then clicks and flashes twice, so I'm assuming a code 22, the legend is gone, anybody know the code or where I can find them?
thanks Ray


  • ChrisJ
    ChrisJ Member Posts: 13,905
    Is this the controller?
    If so, this has a troubleshooting guide.

    http://mesteksa.com/fileuploads/Literature/Applied Air/Direct-Fired Units/IOMDFL-4.pdf

    "Power/Status LED
    A solid green LED indicates power and normal
    A slow blinking green LED indicates power but the 10
    second start up delay has not completed.
    A fast blinking green LED indicates the the inpput
    signal is out of range or may be reversed."
    Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment