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This sounds like the pressure switch is not closing which the igniter will not glow red until the pressure switch closes. Remove the top furnace cabinet door. You will see a inducer fan motor that connects to the flue exhaust vent pipes. Locate the inducer fan motor, then remove the rubber hose that connects to the inducer fan motor and the pressure switch. Use a paper clip to clean out the connection on the inducer fan motor very good applying force if necessary. The paper clip should go all the way through touching the fan blades. Also inspect the rubber hose for any breaks or tears. If there are any breaks or tears, replace the hose. After you have cleaned the inducer fan motor connection, place the hose back.
I apologize. Has the gas been cut off at the house? Can you verify?
Do you have a voltmeter?
Shut the power to the furnace off then back on again. After the igniter glows red, use your voltmeter to check to see if the gas valve is receiving 24 volts. There should be two wires attached to the gas valve. Remove them and use the voltmeter probes to check for 24 volts.
This means that the control board on this furnace has gone bad. It will have to be replaced.
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