ruud rooftop package

[skjch]

I have a ruud rooftop package. The main burners do not light. Pilot and spark comes on, then off, then repeats, but no burners. Blower does come on as well. the unit is 25 years old, but label is long gone. where else can I get model #. Thanks

[RegUS_PatOff]

. . . label is long gone. where else can I get model #. Thanks

I'm not a HVAC master, but a few picture (links) of the Controls, etc, may help the Masters

[applianceman18007260692]

Make sure you have a good ground from pilot to control. Use some sand cloth to clean the Kanthal spark ignitor. It does 2 things. It lights the pilot AND verify's to the control the flame is lit.