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    garyperman's Avatar
    garyperman Posts: 1, Reputation: 1
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    #1

    Feb 2, 2009, 12:29 PM
    Bryant Model 330AAV code 43
    I have a Bryant Model 330AAV Upflow- the flashing indicator lights say it could be a Pressure switch, Draft safeguard switch stuck, or low heat pressure. How do I determine what the problem is?
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #2

    Feb 3, 2009, 05:38 PM
    Use a multimeter to determine which component is interrupting and/or preventing heating cycles.
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