furnace won't light

ray762

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

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
operation.
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."