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    kaplang's Avatar
    kaplang Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Mar 11, 2010, 12:08 AM
    Limit switch is open rheem
    I have a Rheem furnace Criterion II that will not blow air. I can hear the gas flame kick in but the blower never starts. The LED on the control board blinks 3 times then off for 2 seconds which is suppose to indicate limit switch open. Should I rely on this and replace the limit switch? Is their a way for me to test the switch removed from the furnace with a VOM meter and a heat gun?

    Thaks
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Mar 11, 2010, 04:19 AM
    The limit switch might have a reset in the center. Try that first.
    tableclocks's Avatar
    tableclocks Posts: 432, Reputation: 2
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    #3

    Sep 23, 2010, 07:36 PM

    Rheem rgph 10eamer I have the same basic proublen... but my blower would not stop running... code was 3 flashes and 2 sec pause... also.. no spark or heat... after cking the swiches as much as I could... for some reason... it started working... heating up... can the 4 wire roll out switch cause that proublen?. tks 1000
    Richard
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