goodman ignitor problems


Old 01-06-10, 10:22 AM
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Question goodman ignitor problems

I have a Goodman GMPN060-3 gas furnace. The ignitor will heat up and the furnace will ignite but will then go out. I have replaced the ignitor but did not help. Does anyone have any other suggestions?
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Old 01-06-10, 11:03 AM
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If the burners shut off 3-5 seconds or so after igniting, I'd try cleaning the flame sensor of the oxides that sometimes get deposited on it and prevent it from functioning.

The flame sensor is on the opposite side of the furnace from the ignitor, and is a small rod that sticks up into the burner flames, with a wire coming down the bottom and going to the circuit board.

Remove the flame sensor and clean it with a wire brush or some fine sandpaper. You don't need to cut into the metal, you are just cleaning the invisible coating of oxides off the rod.

That's maintenance that should be done annually, anyway.
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