Question about Lite On Laars Lite 2 Heaters: 250,000BTU MV Heater

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Laars boiler pilot light is blown out when burners shut off

Teledyne -Laars boiler pilot is blown out when burners shut off. This seems to only happen when all of the burners dont light up completely. It is as if the flame is inside the burner tubes, rather than buning outside, creating a high pitched noise. When the thermostat kicks off, it appears to blow out the pilot. The thermocouple has been replaced, with no improvement. any ideas?

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Time for a cleaning and gas pressure test.

Posted on Dec 05, 2008

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