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Not sure if this is correct but pilot seems to light stays on for 30 seconds and then shuts off but not before "bursting" a few times (like a small gas burst) then it relights and starts the process over again.I hear lots of clicking and I assume that's the pilot trying to light? should I be worried?

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Is this your home furnace. sounds like you need to clean your hot surface ignitor

Posted on Jan 31, 2009

  • mopar440man Jan 31, 2009

    sorry i mean clean your flame sensor

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Pilot light will not lite; plenty of propane. What position does the knob need to be in to lite the pilot. I see pilot, on, and off positions. It is a Williams gas unit direct vent, does not blow hot air...


Hello,
The knob needs to be turned so the arrow is pointing at "Pilot". It is the only position you will be able to depress the knob all the way down. Once you light the pilot, keep holding down the knob for 30-60 seconds. When you release the knob, the pilot should stay lit if it's working properly. If not, here's a few things to check. Is the pilot flame blue? Is the flame actually heating the thermocouple end? The thermocouple has to get hot enough to allow the gas to stay on to the pilot. Also look at the tip of the thermocouple. It should be smooth and rounded. If you're pilot flame is a lazy yellow, after time it will burn off the tip of the thermocouple, causing pilot outages. Replacing the thermocouple is usually the easiest fix it and is probably what you will need to do. But if your pilot flame is that lazy yellow, you will also need to clean it by either a tiny broach needle or using canned air (with straw attached). Be careful and because propane is heavier than air, smell low to the floor before lighting it to make sure there is not a gas leak. To be safe, close the gas shut off valve and air out the room before lighting and always follow the manufacturer's lighting instructions printed on the heater. If doing this seems too difficult or scary, then call your local propane co and they will send out a serviceman to fix it for parts and labor. Good luck! Douglas

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ONLY ONE OR TWO THINGS AT FAULT.YOU HAVE A BAD THERMOCOUPLE.THIS IS PROBLEM 90% OF TIME AND CHEAPEST REPAIR.IF THIS DOES NOT SOLVE PROBLEM GAS VALVE IS BAD.HOW IT WORKS:THERMOCOUPLE WHEN HEATED WITH PILOT FLAME CREATES ASMAAL ELECRTRCAL SOURCE THAT HOLDS A MGNET OPEN AFTER HOLDING THE PILOT DOWN FOR ABOUT A MIN..THEN TURN GAS VALVE TO OPEN POSITION AND MAGNET WILL HOLD GAS VALVE OPEN.IF GAS VALVE DOES NOT STAY OPEN IT USUALLY INDICATES BAD GAS VALVE

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jaycalk@yahoo.com

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