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    Jaltieri04's Avatar
    Jaltieri04 Posts: 4, Reputation: 1
    New Member
    		  
    #1

    Nov 22, 2008, 05:45 PM
    Electric Start furnace keeps shutting down.
    We have a Rheem gas furnace its about 9years old. Model # RGPH05EAUER and s/n FD5D302F020109611. Help! It keeps shutting down. The furnace is electric start and the ignitor works. Issue: The flame starts then shuts down 5 seconds after burner ignites. This continues repeatedly. Note: blower works and gas is feeding the unit.

    Any ideas?
    Thanks
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Nov 22, 2008, 06:36 PM
    Quote Originally Posted by Jaltieri04 View Post
    We have a Rheem gas furnace its about 9years old. Model # RGPH05EAUER and s/n FD5D302F020109611. Help! It keeps shutting down. The furnace is electric start and the ignitor works. Issue: The flame starts then shuts down 5 seconds after burner ignites. This continues repeatedly. Note: blower works and gas is feeding the unit.

    Any ideas??
    Thanks

    You need to clean the flame sensor with sand paper.
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    Jaltieri04's Avatar
    Jaltieri04 Posts: 4, Reputation: 1
    New Member
    		  
    #3

    Nov 23, 2008, 09:26 AM

    Thanks for the below info and pictures.

    I went to try the below suggestions. Discovered that now the furnace won't do anything... it just humms...

    Please note this was prior to cleaning the flame sensor this am. I still cleaned it just in case but still nothing only a humming noise.

    Oh Lord, what now?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #4

    Nov 23, 2008, 09:39 AM
    This was your post.

    Help! It keeps shutting down. The furnace is electric start and the ignitor works. Issue: The flame starts then shuts down 5 seconds after burner ignites. This continues repeatedly. Note: blower works and gas is feeding the unit.

    The cure for this problem is what I gave you. Now you say it only hums? Hums was not mentioned before your second post.

    STOP cleaning the flame sensor. It only takes a minute to do that job and you can rub it all you want but that will not make the furnace run any better.

    Where is the HUM coming from. Exact location?
    Jaltieri04's Avatar
    Jaltieri04 Posts: 4, Reputation: 1
    New Member
    		  
    #5

    Nov 23, 2008, 09:44 AM

    It wasn't humming prior (this is why it wasn't mentioned), the humming was just discovered when I went to go clean the flame sensor. I can't pin point the exact location but I do know its not coming from the blower motor.
    MarkwithaK's Avatar
    MarkwithaK Posts: 955, Reputation: 107
    Senior Member
    		  
    #6

    Nov 23, 2008, 10:35 AM

    When the humming starts put your hand on the inducer motor. See if you can feel it vibrating.
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