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    elsea's Avatar
    elsea Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Mar 13, 2009, 08:11 AM
    Rheem Classic 90 Plus Pressure Switch
    I have a 6 year old Rheem Classic 90 Plus Horizontal Gas Furnace (Propane).
    Pressure switch sticks which causes furnace not to light 1st thing in the morning.

    When furnace will not start, I remove tube from fan and blow/suck on the tube. I can hear the pressure switch "click" several times and the fan starts. I then connect the tube back to the fan. Furnace will run fine for a month or two, and then will stick again.

    Kind of tired of this little exercise and I want to replace the pressure switch but cannot find a part number nor can I find a serial or model number on the furnace.

    Can anyone get me the part number and recommend a source for the part and instructions for Removal and replacement?

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

    Mar 13, 2009, 08:37 AM
    Removal and replacement is simple. Unbolt/screw the control and remove tube. The replacement is the reverse of the removal. Need a model number to get the exact part number. By law the model number has to be on the furnace and it is against the law for anyone to remove it. Look inside the furnace burner area and on the inside walls that are exposed for the numbers.
    elsea's Avatar
    elsea Posts: 3, Reputation: 1
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    #3

    Mar 13, 2009, 01:10 PM
    Quote Originally Posted by hvac1000 View Post
    Removal and replacement is simple. Unbolt/screw the control and remove tube. The replacement is the reverse of the removal. Need a model number to get the exact part number. By law the model number has to be on the furnace and it is against the law for anyone to remove it. Look inside the furnace burner area and on the inside walls that are exposed for the numbers.
    Thanks for your help!

    Model # is RGTA07FYBGS

    Where can I purchase a new pressure switch and how much should it cost?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #4

    Mar 13, 2009, 06:38 PM
    All Thermal Controls Company: Rheem Ruud 42-24196-81 Pressure Switch

    Here is a complete parts list for your furnace

    http://www.rheempartslists.net/92-42800-RGTA.pdf

    You can also call the company below with your model number and get the parts from them

    Patriot Supply -

    Price can vary just make sure the switch you get is the correct one for your furnace.
    elsea's Avatar
    elsea Posts: 3, Reputation: 1
    New Member
    		  
    #5

    Mar 15, 2009, 03:23 PM
    Quote Originally Posted by hvac1000 View Post
    All Thermal Controls Company: Rheem Ruud 42-24196-81 Pressure Switch

    Here is a complete parts list for your furnace

    http://www.rheempartslists.net/92-42800-RGTA.pdf

    You can also call the company below with your model number and get the parts from them

    Patriot Supply -

    Price can vary just make sure the switch you get is the correct one for your furnace.
    Thank you so much for your help, great information and links!
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #6

    Mar 15, 2009, 04:22 PM
    Your welcome.
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