Yale Model: GLP080LJNGBE089 Serial: C813D01950X. This unit has a check engine light on. The display has an E button and then 1 through 5 buttons at the bottom. I have tried entering numerous number combinations. The hour meter allows you to enter a 5 digit code. I have also jumped A and B terminals on the diagnostic connector on top of the engine. The check engine light flashed 3 times slowly then 10 times pretty fast. Im not sure if this has a meaning or not. I would like to get to the bottom of the check engine light. Any help would be greatly appreciated.
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