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About Jim Barnhart
Expertise
Fifty + years in Heating, Ventilating, Air Conditioning, Sheet Metal Manufacturing.
Semi retired since 1995,
Experience
Answer questions about , residential and commercial.
Answer questions about sheet metal fabrication.
Fifty years plus experience.
No answers for oil equipment, No answers for kitchen appliances, No answers for laundry appliances.
Education/Credentials
Hands on since 1950
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You are here: Experts > Home/Garden > Home Appliances > Heating, Air Conditioning, Fridge, HVAC > heating unit
Expert: Jim Barnhart - 11/5/2009
Question
we have frazer johnston high effiency heating unit. gas does not blow up first and second time of igniter. gas blow up when igniter ignites third time. also sometimes gas does not blow up. blower motors works fine. i ask why gas does not blow up when it ignites first and second time ?
Answer
John,
I'm not sure what you mean by "gas blow up"?
To me "blow up" means "explode" which can't be a good thing in a furnace.
I'm going to assume that your talking about your burner doesn't light the first couple of times it try's?
The reason could be that the igniter isn't positioned close enough to where the gas comes out, or the igniter isn't getting hot enough, or there is a draft disturbing the gas flow because some cover is off?
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