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    popsicle_mark Posts: 1, Reputation: 1
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    Jan 1, 2011, 08:50 PM
    Diagnostic ights indicate two flashing green - no heat and it is 32 outside... Yikes!
    Hi Guys
    I have a Rheem Criterion ii Furnace and the diagnostic ights indicate two flashing green.

    The troubleshooting guide says that this is a pressure switch problem.

    Is there a way that I can confirm the problem? Can I bypass the switch until I can get the new part installed.

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