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Wait 30 minutes; press reset button. Repeat if necessary.
4. Pilot light out. 4. Relight pilot. 5. No gas. 5. Make sure
gas valve to furnace is fully open. Not enough ...home.howstuffworks.com/how-to-repair-gas-furnaces1.htm
Just checked this site. I am sure you will find it useful - Good luck
you may have a problem with the pilot sensor.. it is the thing that stands in the pilot flame. it may need to be cleaned or replaced. try cleaning the pilot so it puts out as much flame as it can and try to be sure that the sensor is in the flame properly. the tip of it should be in the flame not the bottom of the sensor. also be sure the connection of the sensor is tight to the gas valve and not loose. Try these things and let me know if i can provide more ideas.
i'm guessing here it may be that the pilot from where the flame comes from may have a spider web or something similar in it when i did my training on servicing some certain heaters the instructor told me about this and i thought it was a big joke until it happened to me and yes did find a very fine silky web inside pilot so when flame came out it was very yellow and went up in the air like a cigerettte lighter flame, not a blue horizontal flame like it should be so it didn't make any contact on thermocouple and wouldn't change no matter how much i adjusted i was going to order new pilot assembly when i remebered about what i was told and took pilot out to find a spider web in the pilot, this usaully happens over summer or warmer periods where spider gets into fire box then crawls into pilot as it is a safe place till you use the gas and kill the spider but leave a silky web inside pilot tube atop of the bonnet for pilot!
You may have a few sensors, one may be a thermopile that energizes the pilot. It is a very thin but long bulb located in the pilot flame. Then you may have something called a thermopile which is also located in the pilot flame that energizes the main gas valve. It is a larger diameter bulb and will have metal wrapped wireg going to the gas valve. If the pilot stays on but the flame goes out under the logs, change your thermopile and look for a bad connection at the gas valve or switch. If both the main burner and the pilot goes out you may have a gas valve problem or a plugged vent pipe. If the flame just disappears it is most likely a gas valve. If the flame changes colors and lifts from the burner, that is a sign of a plugged vent. Good luck.
Thermo coupler is held in place with a clamp bracket at the pilot end and a small brass line nut on the other end going into the gas valve.The pilot flame must surround the sensing bu or wrap itself around it Press the pilot button for a few seconds and fire up the pilot flame. Wait a few more minutes and turn the gas vale on for the main burners. If it fires, your set.Good Luck,Ned