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    radanovs Posts: 1, Reputation: 1
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    Feb 16, 2011, 07:22 AM
    Ruud Zephyr has pressure switch open code (2 blinks)
    Hello, I have a Ruud Zephyr furnace and it keeps turning off after only about 2 minutes of running. I replaced all of the filters and cleaned the flame sensor. The furnace runs OK for 2 minutes, then clicking begins on the board somewhere and the furnace shuts off. Can someone help me?

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