See previous post in this category.
Following replacement of the circuit board, the furnace worked well for several nights, then last night it failed to ignite several times, tho it would start sometimes after cycling the thermostat.
The flame sounded very ragged and erratic.
Today I took the burner assy out and found this:
Fortunately, due to previous issue, I had a spare burner on hand:
Works and sounds better. Back in business.
My advice: if your unit is more than 15-20 years old, buy a spare burner for $30 or so.
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