Gas dryer pilot light won't light, stay lit - Dryers

Rita, Check the attached links,instruction and guides to trouble shoot pilot light, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Gas Heater Pilot Light Troubleshooting
What to Do if Gas Furnace Pilot Light Won Stay Lit DoItYourself com
Furnace Won Ignite Why and What to Do

Thermostat flame sensor. Do you see a little rod next to the pilot? That is what tells the main gas valve that the pilot is lit and it is safe to give gas. Easy swap, and you can usually just pick up a generic one.

It sounds like there may be an issue with the gas valve or the thermocouple on your Williams gas wall heater model # 5009622. The fact that the pilot light will not stay lit and the burners came on and went off after cleaning the thermocouple, suggests that there may be a problem with the gas valve or thermocouple. Additionally, the fact that the pilot light went off in the middle of the night, it could also be a sign of a problem with the thermocouple.
Possible causes for this issue include a malfunctioning thermocouple, a faulty gas valve, or a problem with the voltage to the gas valve.
Here are some steps you can try to fix the problem:

1. Check the thermocouple: Make sure that the thermocouple is properly installed and that the wire connections are secure. Also, make sure that the thermocouple is clean and not corroded.
2. Check the gas valve: Make sure that the gas valve is functioning properly and that it is sending gas to the pilot light.
3. Check the voltage: Make sure that the voltage to the gas valve is correct and that the wiring connections are secure.
4. Check for leaks: Make sure that there are no leaks in the gas line.
5. If the problem persists, it's best to contact a professional HVAC technician or the manufacturer for further assistance.

It's important to note that working with gas appliances can be dangerous, if you're not comfortable working with gas appliances, it's best to get it serviced by a professional.

If you are referring to a gas fireplace:

• Make sure the pilot knob is turned from "pilot" to "ON" or it will never run.
• If the pilot knob is "ON", and the pilot is lit, but the burner won't light, it could be a bad Thermopile. The thermopile is the other safety mechanism in the pilot assembly that controls the burner.

What is the model number of the unit?

Clean pilot first see if it lights if not you could change thermocouple

The pilot flame must touch (burn) the tip oqef the t-couple to hold the magnet in the gas value open.make sure the pilot orifice (hole) is clear.the pilot pressure (in the tube) is factory set full open & can only be adjusted down (less). Also check the gas **** didn't get closed or turned half way.? Assuming its not the t-couple. If all is good & it still won't stay on. Replace the gas value.!

If pilot lights and flame is robust and clear blue, and pilot goes out later, then some suspects can be excluded: air in gas line, low gas pressure, thermocouple is overtightened (finger-tight + 1/4 turn), thermocouple not positioned correctly in the flame, dirty pilot tube.
If flame is yellowish and small: then clean pilot tube and combustion parts.
http://waterheatertimer.org/How-to-install-gas-water-heater.html#clean
Remaining suspects can include: air in gas line, low gas pressure, bad gas control valve, tight house so household vent fans pull air down water heater vent that blows out pilot, hot attic with inadequate ventilation, water dripping down vent.

Open following links to read troubleshoot resources.
http://waterheatertimer.org/pdf/Pilot-light-will-not-stay-lit.pdf
http://waterheatertimer.org/How-to-install-gas-water-heater.html#troubleshoot

IF YOUR DRYER IS GAS , IT SOUNDS LIKE THE THERMOCOUPLE HAS WENT BAD IF YOU TRY TO LIGHT THE PILOT AND IT WON'T STAY LIT THIS IS YOUR PROBLEM

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.