Question about Weber Genesis Silver B Grill

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Frost around regulator and hose

I connected a new full LP tank to my Weber silver B grill. After cooking on it, I noticed a frost had formed over the regulator and the hose leading to the burners. What is the cause of the frost? Do I need to repair anything?

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In most cases this is not a problem. If the burners are shut off and you still get this and it doesn't disapate in a few hours there is probably a leak you need have a professional look for.

Under normal conditions the overpressure valve on the bottle will go off if the bottle is overfilled. This almost never happens anymore. Dealers are overcautious.

What does cause this is high humidity and the JT affect. Your bottle if full and in the summer is at 150 psig plus. Your burners operate at inch ounces (read very very low pressure). Dropping pressure through your regulator causes serious cooling. This is how you process many gases into refined gases these days. Letting air out of a tire does the same thing. If the humidity is high you will get frost on the hoses and other areas the cool gas passes through.

By taking this to some dealer and having him drain it you are getting screwed and wasting money. They also vent the excess gas to atmosphere which may be illegal and is definitely pollutting.

I work in the propane biz.

Posted on May 05, 2009

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My neighbor had the same problem, but with a different brand. It turned out to be the LP tank was overfilled. Take the tank back to someone that knows what they are doing and have it bled to the correct pressure.

Posted on May 06, 2008

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1 Answer

Bought this grill in june/july. first tank worked perfect. tank went out while cooking. changed to new tank and lit her up. low flame and went out. looked at tank and found the valve and hose covered...


turn off gas at tank remove hose let it deforst , open all burners on bbq run out gas in line , turn off burners, reconnect tank turn on slow , check hose for leaks with washing up liqued and water mix make bubbles with this mix and brush over joints this will prove if you have a gas leak (hence the frosting ) if this is good no leak then you should be able to light burners , if this leaks then it could be a new hose.

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Lisa, when you conducted the soapy water test, how long did you leave the soapy water on each fitting, before you determined there were no leaks? Sometimes, it can take 5 minutes or more for a leak to show up. You should also soap text the tank valve itself.

If no burners were ON when you tested for leaks (and apparently didn't find any), the problem still lies in the Hose/Regulator assembly connections or the tank valve, When you test the tank valve, do it after the valve has been opened very, very slowly (Slow motion, slow).

Hope this helped you to further troubleshoot and solve the problem

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I put on a new propane tank and cooked for about 20 minutes. When I finished I noticed frost had formed on the hose. Is this dangerous?


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Hello,
You will need to replace the orifices and install a propane regulator and hose. Plus, of course, you'll need to buy a 20# cylinder. I looked up your grill serial # and found a parts explosion for your grill. Here is the link: http://www.weber.com/PublicSchematic/view.aspx?model=6821001

If you click on the "additional parts" link, they have the conversion kits listed, but none of them are available anymore. As a propane guy, your best bet is to take it to a local propane co and have them convert it to propane for you. They will drill out your existing orifices and install spuds, and then re-drill smaller holes for the appropriate BTU rating for each burner. Then they can install the regulator and hose and even sell you a new and full 20# cylinder. Call around first and see which one can help you, as not all have serviceman that can do this particular job. Hope this helps. Douglas

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Grill lights but flame is low and goes out if control is moved from high. Burner tube is clean, spider screen is clean, and I have a full tank of LP. Grill is Q series about 1 year old and has been working...


Hello. Are you frustrated because your gas grill doesn't get hot enough lately. The problem you are having indicates that you have to go through a procedure called "RESETTING THE REGULATOR". Follow these easy steps:

1. Turn the burners on for one full minute and then off.

2. Next, remove the regulator and the hose from the tank.

3. Then reconnect the tank to the regulator and hose.

4. And very slowly open the tank.

5. Last step is to fire up the burners and start cooking with you new hot flame.

The problem began the first time you opened the valve on the tank too quickly. In the future, always turn the tank valve on s-l-o-w-l-y to prevent this problem.. Joe

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1 Answer

The regulator and hose from tank to grill have frost/ice buildup - is this a sign of a leak ?


No, if it were leaking you would smell the strong odor of the gas. The gas is pressurized in the tank, when you open the regulator and light the grill, it is normal for the regulator to become very cold and therefore frost buildup. Cheers!

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