Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 8 of 8

Thread: Robertshaw Gas Valve Removal - Help its stuck!

  1. Back To Top    #1

    Robertshaw Gas Valve Removal - Help its stuck!

    I have got a Robertshaw gas valve which feeds into my tray burner on a Comfortzone heater. The heater does not turn on automatically which I am presuming to be down to a possible faulty valve as I have explored what I believe to be all other avenues (the heater will start and stay on by jumping across black and blue terminals).

    The inlet pipe, pilot and millivolt connections are easy enough to remove, but I can't remove the valve from the outlet pipe to fit the new one. Is there a technique or something obvious holding it on?
    Attached Images Attached Images
    20x40 inground 3 1/2'-8', vinyl lined concrete, salt water chlorine generator, DE filter, 2hp pentair pump , Hayward heat pump

  2. Back To Top    #2
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,347

    Re: Robertshaw Gas Valve Removal - Help its stuck!

    The valve just unscrews from the black pipe once every thing else is disconnected. However, if the unit will light and stay lit by jumping the black and blue wires the valve appears to be good. The relay (red box) or signal that energizes the relay (small wires on bottom) is most likely the problem.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  3. Back To Top    #3

    Re: Robertshaw Gas Valve Removal - Help its stuck!

    Many thanks. I took the unit off and the sheaths around wires at the burner end are a bit frayed. (see pic) could this be the problem? What is it called if I need to buy a new one?
    How would I replace the red box if that is suspect?
    I have a brand new valve which I wanted to try as it has a relay on it, but I still cannot unscrew ythe old one off the black pipe. I have put the valve in a soft jawed vice and am trying to move the black pipe but it does not want to budge and I am fearful of applying too much pressure. Do I need a joint sealant remover/dissolver?
    To make things more interesting, once re-assembled, it still won't auto light with the pilot on and when I jump the black and the blue the pilot now goes out
    Big pool party in 10 days time!
    Very grateful for some more top tips...
    Attached Images Attached Images
    20x40 inground 3 1/2'-8', vinyl lined concrete, salt water chlorine generator, DE filter, 2hp pentair pump , Hayward heat pump

  4. Back To Top    #4
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,347

    Re: Robertshaw Gas Valve Removal - Help its stuck!

    If that's bare wire I'm seeing there, that's definiely one problem.

    I'm not sure you can change the relay on the valve. Your picture doesn't give a clear enough view of how it's mounted to the valve.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

  5. Back To Top    #5
    Melt In The Sun's Avatar
    Join Date
    Oct 2009
    Location
    Tucson, AZ
    Posts
    3,899

    Re: Robertshaw Gas Valve Removal - Help its stuck!

    Agreed; that's definitely a problem and likely the problem. Start with the obvious stuff!
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
    TF Test Kits -- PoolMath -- Pool School
    Make each day your masterpiece. - John Wooden

  6. Back To Top    #6

    Re: Robertshaw Gas Valve Removal - Help its stuck!

    Excellent. Do you know what the part is called? ie the red and brown copper wires in the sheath that runs to the igniter from the valve? I need to know so I can order/buy a new one.
    20x40 inground 3 1/2'-8', vinyl lined concrete, salt water chlorine generator, DE filter, 2hp pentair pump , Hayward heat pump

  7. Back To Top    #7
    Melt In The Sun's Avatar
    Join Date
    Oct 2009
    Location
    Tucson, AZ
    Posts
    3,899

    Re: Robertshaw Gas Valve Removal - Help its stuck!

    No idea what it's called. If you have the manual, there may be a parts blowup that shows it, or you could call the manufacturer.

    That said, I would probably remove the whole cord, try and disassemble the rubber-coated plug, remove the old wire, and re-solder new wire to the plug and the contacts at the other end. The plug may not be salvageable, but I'd at least give it a shot.
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
    TF Test Kits -- PoolMath -- Pool School
    Make each day your masterpiece. - John Wooden

  8. Back To Top    #8
    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    Location
    SouthWest Alabama
    Posts
    22,347

    Re: Robertshaw Gas Valve Removal - Help its stuck!

    That's the thermocouple (actually thermopile). You should be able to get one where ever you got the valve. It senses the pillot flame to keep the valve open.

    There's also a wiring diagram just to the upper right of the first picture you posted.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •