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Re: The gas burner will not light.
Hi bob , with the dryer on switch the unit from air dry to 1 of the heating positions ,did you hear a click?If so your problem is with your burner,if not you will have a thermostat/thermal fuse problem.possible burner issues include bad ignitor,ignition sensor .
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No pilot light, you can generally hear a faint hiss as it burns, if there were one. The burner is ignited electrically, similar to when you push that button on a gas BBQ, only a dryer does it automatically (push to start button) when turned on (and the door is closed). If you remove the bottom panel, you should see the igniter spark, if working properly.
First, never light when the pot is empty, you can fill with water if you have no oil. Open the door, check the thermostat and make sure it is turned off.(The burners will light if thermostat is on) Behind the thermostat you will see the gas valve. Turn knob to off, then to pilot. There is a notch at the pilot position. Now look up in the middle behind the burners and you will see the pilot assembly. Push in on the knob on the gas valve while you hold a long lighter close to the pilot assembly. Once the pilot lights keep holding the pilot knob in for 20 seconds. Now let off the pilot knob. Pilot should stay burning. Now turn the gas valve from pilot to on. Now turn the thermostat to desired temp and the burners will fire off and start heating.
Most modern appliances that use gas as an ignition source do not have a pilot light. The gas and ignition is controlled by a burner assembly with a gas safety valve. In theory, the way the burner ignites is:
1. You push the start button, the drum begins to turn and the igniter on the burner assembly begins to glow.
2. The igniter must reach a predetermined current potential in order for the gas safety valve to open. Once this current potential is reached, the gas safety valve opens.
3. Gas begins to flow into the burner manifold, and you have ignition.
NOTE: It can take 30-90 seconds for the burner to ignite. As an igniter ages, it may take longer.
The reason burner assemblies are designed this way (especially in dryers) is to prevent free flowing gas from filling up the appliance cabinet without ignition. If such a condition existed, the could be a potential explosion hazard.
If you are experiencing problems with ignition, the first thing to check is your igniter. The do wear out with age and are fairly simple to replace.
NOTE: A glowing igniter does not necessarily mean it is good. If it is weak from age, it may never reach the required current level to open the gas safety valve.
If you have questions, or require additional assistance, please post back with your complete model number (located on a nameplate around the door opening on most dryers) so I may be able to provide you with better service. I hope this helps you.
there is a relay that latches on when you push the start button .. that relay is released by the "door open" switch .. i would suspect that the "door open" switch is bad .. thats usually a button that is pushed in when the door is closed ..
The heat is regulated with a Klixon mounted next to the blower housing
near the vent pipe so it can judge the temperature of the air coming
out of the drum.Right next to it is a melting type fuse. If the dryer
runs and gets too hot the fuse will melt.But the dryer will still
run. So if the fuse is good(continuity) and the dryer control(cycle)
thermostat is also good then you should have power going to the gas
valve assembly when the machine is running unless the timer is in the
no heat or wrinkle free/cool down mode. When the gas valve assembly is
energized the flame sensor mounted outside the burner chamber detects the heat from the ignitor.
When the heat is very intense then the sensor shuts down the ignitor and that frees up the power so that the coils can be fully energised
and open the gas gates. The gas comes out and hits the red hot ignitor
and you have ignition. It stays on for maybe 2 or 3 minutes or until
the control thermostat is satisfied and shuts down power to the gas
valve assembly. more here
If you have a pilot light (small flame) you can try to re-light it by turning the knob on the gas valve to the pilot position and pushing the knob down while lighting the pilot, you may have to hold the knob down for up to 30 seconds before releasing it. The pilot should stay lit and then turn the knob to the on position. If the pilot will not stay lit or the main burner will not light it could be the gas valve or the temperature sensor.
Since 1995 all regulators (the part that attaches to the gas tank to regulate the flow of gas) have included a safety device that restricts the flow of gas in the event of a gas leak. This safety device can be inadvertently activated in two ways, putting the grill into what is commonly called “bypass”. The first way for the device to be activated is to leave one or more burner control knobs in the “ON” position when the LP cylinder valve is opened. The second is not to wait long enough to “start” the grill after opening the LP cylinder valve. The safety device in the regulator is activated each time that the LP cylinder valve is opened. The device resets itself when the gas pressure equalizes between the closed burner control valve and the regulator, through the hose. If a burner control knob is turned on before the gas pressure can equalize, the device will remain in “bypass”. The length of time necessary to wait to “start” the grill after turning on the LP cylinder valve is dependent on the length of the hose and outside air temperature. It is always good practice to wait a few seconds after opening the LP cylinder valve before turning on the burner control knob to start the grill.
Keep in mind that the safety device reacts to a gas leak. If a grill is in bypass, the gas connections and hose should be tested for leaks with a soap and water solution.
If the grill is in bypass, after checking for gas leaks do the following to get the grill out of bypass:
To reset the gas safety device: Open the barbecue lid. 1. Close the LP tank valve. 2. Turn your burner control knob to the OFF position. 3. Wait at least 5 minutes if the barbecue had been lit, then 4. Disconnect the hose from the LP tank. 5. Turn your burner control knob to the HIGH position. 6. Wait at least 2 minutes, and then turn the burner control knob to the OFF position. 7. Re-connect the hose to the LP tank.
Re-lighting the barbecue: 1. Open the barbecue lid. 2. SLOWLY open the LP tank valve all the way and wait 1 minute. 3. With the lid open, turn the burner control knob to the HIGH position. 4. Ignite the grill by pushing the crossover ignition button. 5. Close the barbecue lid. 6. The barbecue should reach 500 to 550 degrees in 10-15 minutes.
When you are done grilling: 1. Turn all burner control knobs to the OFF position 2. Turn off the LP tank valve last.
* Always follow the re-lighting instructions whenever you use the adapter hose and larger tank.