Question about Ducane Meridian MDBQ-30 Grill

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Ducane 3 burner medidian

The knobs on my grill, when lowered, cause the flame to go out. If I push them in, the flame come on, when I let go, the flame goes down. When the knowb is on High, everything works.

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POP OFF A KNOB AND LOOK TO SEE IF THERE IS A TINY SCREW IN THE CENTER OF THE KNOB SHAFT . THAT WOULD BE YOUR ADJUSTMENT FOR GAS FLOW. IF IT'S NOT THERE, THE PROBLEM IS IN YOUR REGULATOR, AND IT'S ADJUSTABLE AS WELL.

Posted on Apr 08, 2008

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My brother changed the 3 burners and there s only the one of the left that s working .I ve tried to take them away to put theoldones but Idon t know how to do it..Thanks


The problem may be caused by low gas flow. So, before removing & reinstalling the old burners, do the following:

First be sure you have adequate gas in the tank. If that checks out OK, do the following:

1. Turn the gas tank valve OFF and disconnect the hose from the tank.

2. Wait 5 minutes and reconnect the hose to the tank.

3. Open the tank valve VERY, VERY SLOWLY (Slow motion, slow).

4. Once the tank valve is fully open, light the burner farthest from the tank first and set the burner
control knob on HIGH. Does the flame height look correct for being set on HIGH? If so, light
the remaining burners the same way. Do all the burner flames look correct? If so, you solved
the problem. Remember, to always open the tank valve Very, Very Slowly.

If that didn't solve the problem, you will need to replace the grill's Hose/Regulator Assembly. It runs about $30.00 at any home center or hardware store that sells grills & accessories. If you replace it, turn the tank valve ON Very, Very Slowly.

If you find you need to remove and reinstall the old burners, I have included a link to the Owners Manual for you grill. Staring on page 21, Annual Maintenance, it will tell and show you how to remove the burners. http://help.weber.com/manuals/ducane/2008%20Manuals%20pdf/20529916_030308.pdf

I hope this helped you and Happy Grilling!! Thanks for choosing FixYa.

Aug 19, 2011 | Ducane 30400040 Stainless Steel Grill

1 Answer

I was given a ducane 20002301 2 burner with rotisserie and when I ignite and have on high there is not much flame. I know very little about gas grills


Could be two things, the first is a bad regulator, easy to replace and not very expensive. The other is a blockage in the burner orifices. For this you have to take the burners out and check inside the burner venturis and then see if you can unscrew the orifices on the valves and clean out any blockage.

Nov 16, 2009 | Ducane 455 inch 2 - 3 Burner with...

1 Answer

I have a ducane stainless steel ducane 30400042. Weber has sent me new burner bars since the old ones rusted but you do I install them?


Remove the grates and burner heat deflectors. There are 4 screws on the knob panel, 2 on the left and 2 on the right. Remove the screws and pull back about a inch or two. I found it helpful to open all the doors a bit to rest the panel on them. The burners should remove easily once this is done. Replace the burner tubes and be sure tubes have holes facing up on the one side for correct heat distribution. When placing the knob panel back on, make sure that burner tubes go onto the gas control knob correctly. Replace screws on the knob panel.

****Get a wire brush about the size of a tooth brush to clean the starter, the thing that makes the spark to start the flame.****

Jun 20, 2009 | Ducane 30400040 Stainless Steel Grill

1 Answer

Need to replace burner tubes on a Ducane grill. How do you do this? How do you get the old one off? I don't have a manual anymore.


First call Weber to receive the Warrenty burners for free. Have model and serial numbers ready. They can be found on one of the doors. Here is what I did for my Ducane model 30400042.

Remove the grates and burner heat deflectors. There are 4 screws on the knob panel, 2 on the left and 2 on the right. Remove the screws and pull back about a inch or two. I found it helpful to open all the doors a bit to rest the panel on them. The burners should remove easily once this is done. Replace the burner tubes and be sure tubes have holes facing up on the one side for correct heat distribution. When placing the knob panel back on, make sure that burner tubes go onto the gas control knob correctly. Replace screws on the knob panel.

****Get a wire brush about the size of a tooth brush to clean the starter, the thing that makes the spark to start the flame.****

Jun 07, 2009 | Ducane 30400042 (LP)

1 Answer

The burners sounds like a jet plane.


make sure the burners are clean, each and every little hole must be clean. It sounds as though the flame is burning near the inlet of the burner which can occur if the holes are restricted too much.

May 26, 2009 | Ducane 455 inch 2 - 3 Burner with...

1 Answer

Spurting flames from my right burners temp knob.


The tube is worn out and probably has a large hole in it. Replacement is easy.

Apr 11, 2009 | Ducane 436 inch 2 - 2 burner Grill

1 Answer

Lighting Problem/2 year-Old Ducane Grill


Do you have enough gas pressure coming out of the regulator and gas valve? You'll need a pressure guage for this.

If yes, try taking out the burners and cleaning them with a wire brush, especially the flame spreading sections.

Sep 15, 2008 | Ducane 30400040 Stainless Steel Grill

2 Answers

Burner replacement on Ducane 30400040


Remove the 2 grill wire cooking racks by lifting them out of the top of the grill, next lift out to remove the 3 heat deflector panels which exposes the 3 burner tubes. Remove the 4 screws located on the outside flanks (2 on each side) of the 5-knob control panel assembly - then gently slide the knob control assembly outward and away from the grill just about an inch or two. You can now remove the old burner tubes and replace them with the new units. Then simply slide the control assembly back into the grill frame and replace/tighten the 4 screws. Voila`

Jul 04, 2008 | Ducane 30400040 Stainless Steel Grill

2 Answers

Ducane 3400042 lighting problems


Good answer... but remember (if you have the regular burners on... The Rotisserie will not light.) 1. Cut all knobs off... Then push and hold in Rotisserie button as you turn to high.
2. Press ignition button, until you hear rotisserie ignite. 3. Keep holding in the rotisserie button until the thermostat realizes the gas is on and burning. (IT must get hot enough to keep gas flowing.) Hope that helps, Dave

Apr 08, 2008 | Ducane 30400040 Stainless Steel Grill

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