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Pilot going out

I can light the pilot, set the dial for the level I want and the burner will light OK.
After the heater gets up to the temp it's set to and goes out the pilot will fade out and extinguish. I can re-light the pilot again, holding it down until the sensor heats up, but when I set the dial the flame shrinks and goes out again. Once the heater has cooled down I can light the pilot and it will stay lit and cycle the burner again, but will shrink and go out once again after the heating cycle shuts down. I have taken the lines apart and blew them out, along with the pilot tube, to make sure they're not blocked with dust.No change, still does the same thing.

Any idea why?

Thanks,

Dan

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Sounds like a bad thermostat.I am not to familiar with this problem.
sorry i could not be more help

Posted on Nov 23, 2008

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12_1_2011_9_41_46_pm.jpg

12_1_2011_9_42_08_pm.jpg
This stuff will safely clear the dust and cobwebs and any other junk in there that would make the pilot think that oxygen is low in the room. The air we breathe is 21% oxygen. That pilot is set to push the flame out at 18% oxygen levels. if the pilot is dusty the flame will be extinguished by the safety mech. Rust buster safely flushes any contaminants out without harming the innards of the pilot safety. Use shop air and blow it out and get a great result also.

12_1_2011_9_45_28_pm.jpg

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