Forum Discussion
BFL13
Oct 18, 2020Explorer II
Model/year of the furnace? Some have separate heat sensor probes going to the circuit board, while the newer way just has the sparker, but it "reads" the flame magically, so your post is not clear on that. You changed the CB and it did not fix it, so is it the old way you can change the probe that lies alongside the sparker?
That flame sensor probe ( if fitted) has its own wire that can be checked for connection too.
That flame sensor probe ( if fitted) has its own wire that can be checked for connection too.
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