My Rheem furnace model UDGE-06NLAER blower motor keeps running After I changed filter It always stops after 5-10 min. usually but this time . Is the time delay circuit board defectived ?

Are the flames lighting when there is a call for heat? Make sure the switch on the thermostat is set to fan/auto, not fan on(if your stat has this option). Let me know and we will take the next step.