But that takes some practice! Keep your face out of the fire! Keep your head away from where that gas flame can reach out and touch you if it doesn't light promptly.Īs a gas fireplace repairman I kept my hand on the gas control valve, ready to turn the valve to the pilot position if the main burner delayed in lighting. Let me know what you see.Īnd keep an eye out for how fast that main burner lights up. If the flame is a soft blue flame, easily blown around or has yellow tips, that a good indication that the pilot burner is dirty and needs to be taken apart and cleaned. The pilot flame should look like a small, sharp blue flame, like a small blowtorch. So I suggest you look carefully at the condition of the pilot flame for the likely source of your problem. And the most common reason why a gas fireplace wont light when the switch is turned on is a dirty pilot burner. The most common reason for delayed ignition is a poor pilot flame. The main burner gas accumulates in the fireboox until it is finally touched off by the pilot light -WHOOOMP! That can singe your eyebrows under the right conditions! The WHOOOMP noise you describe is called "delayed ignition." That occurs when the pilot light doesn't light the main burner PROMPTLY, as soon as the main burner gas switches on. You need one that is sensitive to read down to a few millivolts - 1000 millivolts=1 volt. Yes, multimeters are commonly available in big box stores these days. Where should I look next? Any diagnosis I've missed based on what I have described and tried this far? Thanks in advance. I even tried touching the wires together bypassing the switch and got nothing, not even a spark. Next I replaced the wall switch, this did not work either. Unfortunately when I went to fire up the fireplace it still didn't light. So far I have thoroughly cleaned off the thermocouple and thermopile with fine sandpaper and a scotchbrite pad, they were a white color with build up but now they are nice and silver. My pilot light stays lit and there is 3 large flames down there so I have gas/fuel and good flame. I found this great Forum and various threads walked me through a lot of troubleshooting. I'm pretty handy so I figured I'd try to see if I could fix it myself. Summer turned into fall and I called my local Heat and Glo service shop a couple weeks ago and they are booked out until January. I shut it down and turned the gas line off and figured I'd look at it over the summer. My trouble started the end of last winter, my natural gas Heat and Glo which is approximately 15 years old started just going out and the restarting itself sometimes followed by a large "WHOOMPP!" when it reignited. Hello, this is my first post but I have been poking around on here for the past week or so trying to troubleshoot my issue.
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