Oil Furnace won't light every 6 days

Old 01-31-13, 01:18 PM
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Oil Furnace won't light every 6 days

I have an older Fuel Oil Furnace Manufactured by Armstrong Air Conditioning Inc Model #LBF80B84/95D12-3A. I had it serviced about 3 weeks ago, cleaned/changed nozzle, filter and air filter. Since then every 6 days, roughly, the furnace will not run when heat demand is sent. I can press reset button and it may start on first try and may not. It has not taken more than twice to fire. I have fuel and it runs without a hitch until that random moment. I was figuring it to be the transformer but not sure since so close to being serviced. Seems odd the intermittent no fire started after service. Thanks for any help.
Old 01-31-13, 07:32 PM
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Could be any number of things but an electrode adjustment is the most common.

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