Glow coil comes on, in a few seconds gas ignites and burns for 10-13 seconds on first ignition. Then flame goes out. And glow coil is not on. After @ 60 seconds glow coil comes on followed by gas ignites. Gas burns @ 8 seconds this time and all following times. Dryer continues this cycle of @ 8 seconds burn, flame out, 60 seconds no glow, glow on, gas burn. In a properly functioning system, does the glow coil stay on or go off while the gas is burning?