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    bobAMedina Posts: 1, Reputation: 1
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    Mar 31, 2010, 03:44 PM
    Concord furnace question
    I have a Concord furnace model cg90cb. We are getting a code 3 fault. (pressure switch open with inducer on) It seems to be a condensation problem on the vent line.

    We do have two 90 degree elbows going around an offset (a short vertical run) can this cause condensation? And should the offst be gradual with two 45 degree elbows?

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