When I start the dryer on any heat level and timed drying, everything turns on as usual. After 5 minutes the flames turns off and never comes back on. If I turn off the dryer and start it again, I hear a click and the igniter turns on, glows and turns off before the gas comes through, then glows again and turns off before any flames.

I replaced the thermostat and high limit thermostat already.

Anything else? It seems like if I don't use the dryer for hours, then the flames will come on for 5 minutes.

Thanks!