I started my furnace for the first time this year and it doesn't light, it is a RUUD delux 90 plus, model UGEB-10EE-GS, direct vent with electronic ignitor. I turn the furnace on and thermostat up and the exhaust vent kicks on and runs. If I remember from last year the exhaust vent will run for around 30 sec, then the ignitor will glow and the gas valve will click on. Now I don't get anything other than the exhaust fan blowing. The ignitor went out last year and when that was out the gas valve would still cycle, so I don't think that is it, I also visually inspected the ignitor and didn't see a break. Is getting cool at night, what can I check? Thanks for the help!

Is the circute board giving a code (blinking light)?

is the circute board giving a code (blinking light)?

I removed the lower pannel to expose the circuit board and wiring, and don't see a diagnostic LED like some units have. I could be missing it but it doesn't appear to have one. Any way to look up my model and see if it does? A Google search didn't find anything. Thanks for the help

If you opened the lower panel you will have to depress the button/kill switch by hand to send power to the unit /this should light up the led light on your board

I wanted to post the resolution to this. First, this furnace doesn't have any type of LED indicator on it, I ran the furnace with th lower door off and manually switched the kill switch to see it run. Since I didn't get any power to my ignitor I backed up and started testing switches. I found that one of the two pressure switches was not working. I tested it using a multi-meter to test continuity as I blew lightly on the hose. I replaced the 3 wire switch and am back in business again. Thanks for the advise.