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Are you saying you press the rollout reset and the unit starts up but then the reset trips again?
What is the brand and model number of your unit?
Are you having to push the reset button on rollout or turn power off and back on to furnace to clear the code?
Are you at location of unit?
Can you give me complete model from inside furnace in burner compartment so I can provide guidance with this specific unit.Model will be on a label just above burners on right or left inside panel
OK we need to check continuity between the 2 red wires at the PL1 connector to see if one of the limits is actually opened.Do you have a continuity meter to do this?