Goodman Gas furnace with no heat . Call for Heat the only smart vent moor is on for five minutes and stop after that. The "hot surface ignitor" never come on. The PG&E people diagnosed the "pressure switch and igniter" are bad. I replaced both but it still not work. What should I do for this matter. Thank you for your help please

Check the status light for fault code display while the furnace is attempting to ignite. Look for legend inside front panel.