some LP burner tubes not lighting
#1
12-22-16, 08:53 AM
some LP burner tubes not lighting
I have a Weil-Mclain HE-4 series 3 boiler. Intermittently (!) only the first of 6 burner tubes lights. The flame sensor is on tube # 2, when there is no flame on tube 2, the sensor shuts gas off, (as it should.)
T-stat is working fine, hot surface igniter is working fine, (lights first burner), Flame sensor works fine, (shuts off gas if no flame). I pulled the 6 burner tubes, cleaned them, reinstalled, no joy. There is no crossfire tube or mechanism. The burner tubes have no 'wings' for lighting adjacent burners. What's next?
T-stat is working fine, hot surface igniter is working fine, (lights first burner), Flame sensor works fine, (shuts off gas if no flame). I pulled the 6 burner tubes, cleaned them, reinstalled, no joy. There is no crossfire tube or mechanism. The burner tubes have no 'wings' for lighting adjacent burners. What's next?
