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Rheem Criterion II Furane would not ignite

Hello - my Rheem Criterion II (old model) would not ignite the flame.It worked until a couple of days ago. When I open the cover and startthe furnace, the green LED is blinking twice then pause. According tolabel, the pressure switch is open. How can I fix this? Do I need toinstall a new pressure switch? Please advise.

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  • sapsecure Dec 25, 2008

    the subject should read Rheem Criterion II Furnace -

  • sapsecure Dec 25, 2008

    Merry Christmas - I really appreciate giving me assistance over the holidays. The hose is still in great conditions. What I did is to remove the hose and blow & **** into the switch, closed the burner door and it ignited. I am not sure if this will come up again, but at least during my test, the furnace ignited. I will see again tonight if it comes on again.

    Thanks again!


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What you need to do is take and inspect the hose that goes to the pressure switch and make sure that it is not dry rotted. if it is and the combustion blower is running then firsat try to cut the hose down and slip on a better piece of rubber. If not then replace the hose,

Posted on Dec 25, 2008

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