Ryan for Model Number dlgx3361w My dryer has inconsistent heat. Sometimes it will work all day and other times it will not heat. All of the thermostats are good and my flame sensor has continuity. I also ran the machine without the dust work hooked up, to see if that made any difference. Gas valve is new. I was wonderring about the flame sensor itself because the circuit is closed and it lights the igniter. How can you tell if the circuit opens so the coils open.
Answer Ryan, If the flame sensor was faulty, the igniter wouldn't stop glowing, or it wouldn't glow at all. Power reaches the valve assembly by the molex connection to the valve. The coil assembly and igniter receive the line voltage (120 VAC) when the flame sensor is "closed"and develop a magnetic draw through the coil. The igniter begins to glow and heat, the secondary coil is bypassed by the flame sensor. When the igniter is hot enough two things occur, the igniter resistance decreases, the heat from the igniter causes the flame sensor switch to open.The fame sensor contacts are open the secondary coil is no longer bypassed it's now in series with the igniter and booster coil, the low resistance of the igniter allows the voltage to drop across the secondary coil, a small percentage of voltage is also dropped across the igniter and booster coil. The secondary coil opens and releases the gas from the valve the gas, passing over the hot igniter cuses the gas to ignite and the burner to activate and burn. You may want to replace the flame sensor, but if it cycles off and on consistently chances are it's OK and you have a loose connection in the gas valve wire harness or an intermittent gas supply problem. Read More... Answered by AppliancePartsPros.com | Monday, May 16, 2016