Originally Posted by G Schulz
The burner and or orifice probably needs to be cleaned.
My first thought as well
For the O/P here is the sequence
Thermostat calls for COLD
Gas valve opens and ignigition coil sends high voltage to spark rod/flame sensor ignighting gas (We hope).
Rod heats up, after a few seconds ignigion system is turned off and flame sensor kicks in.. If it sees .480 volts it keeps gas flowing.
Burner dirty (Spider nest) or otherwise clogged or out of adjustment causing weak or no flame
Igintion system not working
Flame sensor (Thermocouple) not working (Doubtful)
Flame sensor chip on control board now working (Also likely)
On the Fridge though the burner is #1
Clogged flue, bird's nest, can also cause issues.