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    dpalmieri Posts: 1, Reputation: 1
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    Oct 19, 2009, 04:20 PM
    Faulty pressure switch?
    I have a 7-8 year old york 80 upflow model that will not turn on when the heat is turned on. The blower works when the fan turned on the thermostat and the a/c works. Last night, the heat did work before I went to bed. The humidifier was turned on and when I woke up in the middle of the night freezing, I realized the heater was no longer working. The humidifier which is located above the burner compartment had leaked water onto the gas valve and the wiring. I checked the small fuse in the blower compartment and it was fine.
    The led light was blinking twice.

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