Little trick. Take some fine grit sand paper to the flame sensing rod. These get all carboned up and dont sense the heat properly. On a 90% Rheem Im guessing its a spark ignition and if its like the waterheaters, the spark ignitor is also the flame sensor.
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91 fj 80 on 37 Nitto Muds with a 10k winch. Cage and sliders coming soon.
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