Pilot light goes out on gas fireplace after switch turned to on position
I followed the instructions to light the pilot on my FP. (pushed pilot dial in, turned it to Pilot, pushed in ignitor button a few times and the pilot lights just fine) I keep it pushed in for 60 seconds and let go and the flame stays lit. Then according to the instructions, I am supposed to turn the dial to the on position, and each time I do that, the pilot goes off. What am I doing wrong? Not to question you......but are you SURE you're going towards on and not off ? I know by my own fireplace insert that the writing on the valve is tough to see. Do you have make and model number of your unit. Yep, I am sure. The fireplace is only 4 years old and the writing is very clear, so I am certain that I am switching it to on. Make and model is White Mountain Hearth vfhd-32r-2. I didn't find your actual model number but thru another site I was able to identify the insides of your fireplace. (At least I'm pretty sure it's yours) This is a non-vented unit...correct ? These units use an ODS (oxygen depletion sensor) pilot system. It may need to be cleaned. In the link below check out pages 18-21 for troubleshooting steps for your unit. Please feel free to ask any more questions. http://www.whitemountainhearth.com/a...28N,P%29-1.pdf yes, it's ventless. I will give this a try. thank you so much! PJmax, thank you for posting that. It appears to have solved the problem I was having with a Honeywell VS8421D-2003 gas valve on our vent-free fireplace. I had gone through all sorts of steps with a technician over the telephone and your suggestion never came up. I would have already bought a new valve but they are no longer available. I cleaned it with a can of compressed air designed for cleaning computer parts. After cleaning it, the pilot light was much more forceful. I think the clogged orifices caused an incorrect flame pattern on the thermopile, resulting in erratic functioning of the valve. Your welcome.....and thanks for the feedback.....it's appreciated and will help others I too are looking to test and/or repair a Honeywell VS8421D-2011 ventless gas control valve. I clicked on the address you provided, but it came up as No Results. If I may impose, do you have the manual or a site that may have it? Really appreciate your time. Welcome to the forums. See if the following link helps you. If not.... post your model number for me. white mountain hearth /assets//WMH/manuals/.pdf Thank you PJmax, I found and read the info on the manual. I performed the cleaning procedure and installed the control valve. Sorry to say, but it did the same thing (after pilot had been lit for a minute or two) I released the knob. It stayed lit, but when I turned it to the ON position, the pilot went out. What can be the problem? Here is the make model of my fire logs. PyromasterUVHB20RP-LP. Thank you so much for you help and your time. Do you have a voltmeter ? You're going to need to check the voltage from the pilot generator. You should measure at least 325 dc millivolts. The pilot generator sits in the flame and generates the small DC voltage needed to keep the pilot on and open the gas valve. If the output is reduced there may be enough voltage to keep the pilot active but when you turn it to on... the main gas valve drops the voltage to almost nothing and the pilot also shuts down. Double check that the pilot generator is in the flame and that the pilot flame is healthy. What would be the cause, and solution if the valve did not supply voltage to the pilot after turning to the on position?
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