Furnace tries to fire , fan comes on in combustion chamber , tries to fire and then the 2 green lights on computer board start flashing
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Furnace tries to fire , fan comes on in combustion chamber , tries to fire and then the 2 green lights on computer board start flashing
There has to be a key to the blink code somewhere. Look on the board itself or on a sticker on the inside of the blower door.
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