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Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. First I’ll need some more info so I have a more complete picture of you situation.
If the unit didn't run until you jumped out a limit then that limit is bad. You can't run the unit with any limit jumped out. It's a primary safety device. If you have to run the heat to keep the pipes from freezing then you can't leave the furnace unattended.
I just said if you jumped it out and the unit works then it's bad. There's a glitch with your account. If you want to talk then contact customer service to iron it out. Or we can continue here
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Did you try pushing the button on the "sensor"?