I have a rheem rrka forced air induction gas furnace. Last night it just stopped the ignitor isn't sparking. I would think it was the ignitor but the codes on the board is flashing flame roll out switch. Any help would be grateful. The thermstat calls for heat the pump starts up I never hear gas and it doesn't light.

Thanks

Flame roll-out switches are typically located near the main burner(s) and require manual resetting once tripped. Look for a small device (or a string of several) with two wires connected and a tiny pushbutton in the center. If you push the button and the device clicks, it was probably tripped. Observe burner operation for flame disturbance and/or straying, as this may indicate a leaking heat exchanger (most common cause of open flame roll-out switches).