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720-0061-LP 3 burner problem ?

#1 User is offline   teakwood 

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Posted 03 November 2005 - 08:21 AM

Hello,
I have been reading in these forums for over a year and this is a great resource for info, cooking tips, etc... a great bunch of people here !

My research on grills and alot of the info I read here led me to buy the Jenn-Air 720-0061-LP (45k BTU 3 burner) stainless gas grill late last year. I love it. It cooks even, gets real hot, and lets me rotisserie, smoke, sear, burn, whatever type of meat I want to cook... I have been extremely happy with it for the past 12 or so months and I use it 2-3 times per week.

This week I ran into a problem, the first real problem I have had with this grill. I was cooking some beef, a t-bone steak I believe, and I normally watch the hood temperature during preheating (10 mins or so), and I look for temps of 350 degrees on the hood gauge or so during my preheat, then I back off once I put the meat on. My grill couldn't heat up past 300 degrees. So, I took the grates and flamegaurds and looked at my burners. I normally only use the 2 burners on the left side and both were lit, but only on their left sides. No flame down the right side of each burner at all. I was able to light each burner, with a match, but they would not light via the grill's igniter. The left side of the burners is all that would light with the igniter. The flames coming out of all 3 burners on HIGH, seemed to be a little lower than normal too. SO, I removed the leftmost burner to look for a spider nest or any sort of obstruction in the burner and couldn't find anything. All the burner holes were open and clean. Next I removed the tank and checked for pinched hoses and lines, no problem there either. I finally removed the regulator from the tank for a few minutes and reconnected it and slowly turned on the gas... still no change in the way the burners lit.

The problem seems to be with my gas pressure or flow of LP, but I have tried a 2nd new and full tank without any change. I finally called Jenn-Air (Nexgrill) customer service last night, and explained the problem. They are sending me all 3 new burners, but I really have the feeling that is not the problem.

Does anyone else have any insight or had a similar situation that can relate this issue to here, that may help me solve this problem ? At this point, the grill is unusuable due to the fact that it just doesn't get hot enough. I can use it as a smoker, but thats about all, and its getting frustrating because I do use it alot and for almost everything. I would love to be able to use it and actually cook some throughout versus raw in the middle, which is all I can do now.

Thanks for any help.
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#2 User is offline   steve_hiemstra 

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Posted 03 November 2005 - 10:25 AM

Hi 'teakwood',

This problem has been discussed a few times here in the past. If you search on the word 'slot' you will be able to read some of the responses.

In a nutshell... there is a groove/slot on the rear-bottom of each burner that gets dirty/corroded. If you can clean this slot the burner should again light on both sides. Also, there 'may be' some dirt in a few burner holes.

If you can't get the 'slot' clean (it happens with age) you can get replacement burners from customer service (as you already have - save them for when you need them).

Enjoy,

SteveH
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#3 User is offline   teakwood 

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Posted 03 November 2005 - 11:34 AM

steve_h... thanks for the reply.

I did do a couple quick searches on burner problems here, but never found anything with my exact same problem. I will do some searches on the slot at this point, to make sure that is not my problem.

I did remove a burner completely, and didn't notice any sort of build up, corrosion, or dirt in any holes or across the slot in the back. I do remember the slot you are referring to when I had the burners out. All of my burner holes were relatively clean, and the slot or track at the back of the burner was not obstructed.

I still think my problem is related to some sort of flow issue with my regulator, as the flames seem low... the burners don't need adjusted, and they aren't yellow or jumping, but the overall height of the flames seems lower and that may be due to an LP flow issue.

I will continue to search and see if I can find any other reports of flow problems in this same grill. Surely I am not the only one with this problem.

Thanks for the follow-up.
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#4 User is offline   lbuccola 

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Posted 03 November 2005 - 04:29 PM

teakwood, on Nov 3 2005, 04:34 PM, said:

steve_h... thanks for the reply.

I did do a couple quick searches on burner problems here, but never found anything with my exact same problem.  I will do some searches on the slot at this point, to make sure that is not my problem.

I did remove a burner completely, and didn't notice any sort of build up, corrosion, or dirt in any holes or across the slot in the back.  I do remember the slot you are referring to when I had the burners out.  All of my burner holes were relatively clean, and the slot or track at the back of the burner was not obstructed.

I still think my problem is related to some sort of flow issue with my regulator, as the flames seem low... the burners don't need adjusted, and they aren't yellow or jumping, but the overall height of the flames seems lower and that may be due to an LP flow issue.

I will continue to search and see if I can find any other reports of flow problems in this same grill.  Surely I am not the only one with this problem.

Thanks for the follow-up.
<{POST_SNAPBACK}>


Hello Folks,

I've been away from this forum for a while (Katrina), but am glad to be back. I've had the same problem as you describe with the slots, TWICE! Mine weren't just dirty, they were closed completely (kinda fused). This is related to the burners bowing due to a poor casting. I am now waiting on cast ss burners. They were supposed to arrive pre-Katrina but the package was shipped back. When I finally received the package, the burners were BRASS AGAIN! I called, they shipped, BRASS AGAIN! I'm waiting on the 3rd shipment which should arrive today. I hope it will be correct.
720-0061LP (Early 2004)
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#5 User is offline   vbmarcus 

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Posted 06 November 2005 - 08:26 PM

Interesting post... I had the EXACT same problem that teakwood had. I noticed slow heat up... finally noticed that the right side (opposite the pilot flame) side of my left and right burners as not igniting on the right side of the burner. After a week... and very frusterated... I took the cotter pins out and checked the brass burner themselves... the cross-over slit had a build up of goop. After a quick insert of a thin sharp knife.... the brass burners slits were clear. I lightly banged them on the ground briefly to knock out loos black soot... re-installed them... and the cross over light works like a charm once again.

If this does not do the trick for you... but sure the check your LP or NG hose... the stock hose can be kinked quite easily causing very slow warm ups.

It was in the 80's in Tulsa today... grilling was an extreme joy!
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#6 User is offline   GrillMark 

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Posted 07 November 2005 - 03:05 PM

Hi Teak.
I had the same problem a couple months ago and think it was flow related as well because I had also lost some heat at the grates. I never checked the slot under the burners but solved the problem with a new regulator. Nexgrill has sent me three replacements since I bought my 4 burner a year ago and I kept the third as a spare without using since the second one seemed to work fine. I got 800 on the grates and was happy. Once I started having the burner ignition problem and slight loss of heat, I switched regulators to see it that was the problem and WOW. Not only do the burners all light like a charm, but the flames are bigger and a crisper blue. I got 1000 deg on the grates. WOW will that ever sear a steak!!!!!!!
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#7 User is offline   mllamas 

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Posted 08 January 2006 - 05:03 PM

I have a similar problem; some times the grill is not working a full capacity. I found that the problem is the hose (tank/burner), depend on the position of the tank, some times the hose is not totally "open" restricting the gas flow. Move the tank, try different position and you will se a change on the flames.

I tried several times to contact Nexgrill to report the problem without success.
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#8 User is offline   teakwood 

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Posted 09 January 2006 - 07:44 AM

mllamas, on Jan 8 2006, 05:03 PM, said:

I have a similar problem; some times the grill is not working a full capacity. I found that the problem is the hose (tank/burner), depend on the position of the tank, some times the hose is not totally "open" restricting the gas flow. Move the tank, try different position and you will se a change on the flames.

I tried several times to contact Nexgrill to report the problem without success.
<{POST_SNAPBACK}>

Problem solved... I replaced the regulator, and everything is working properly again. Before that I tried different tanks, new burners, etc...without any luck.
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#9 User is offline   cuskit 

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Posted 09 January 2006 - 10:10 AM

Teakwood, glad you solved the problem. Grillmark was right on the "mark" with the solution! Again, the forum pulls through. Course, you were in the ballpark with your instincts. I'm surprised Nexgrill didn't suggest the regulater. Did they send out a new regulater or did you purchase on your own? If so, send them the receipt for compensation. Wait, maybe they'll want the burners back. Hmmmmm???? Did they send you SS or brass burners? At least you now have a spare set! ;) Mike
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#10 User is offline   bradneal 

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Posted 07 February 2006 - 02:30 PM

I have the 720-0099-NG (purchased new in May 05). Same problem - no right-side flame, slow heat up, and low top-end heat.

I have called the mfgr twice. This last time (just today), the guy told me to open up the regulator cap and crank the Phillips screw in 4 turns and that should do the trick; which I will try tonight when I get home.

Their first suggestion was to clear the slot in the back of the burners- didn't help.

I have heard one other suggestion, but would like a few opinions if the regulator adjustment does not work - that being removing the regulator altogether. Anybody ever try that? Any safety issues to be concerned with?

Thanks,
Brad
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#11 User is offline   H3MAN 

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  Posted 16 February 2006 - 03:42 PM

bradneal, on Feb 7 2006, 02:30 PM, said:

I have the 720-0099-NG (purchased new in May 05). Same problem - no right-side flame, slow heat up, and low top-end heat.

I have called the mfgr twice. This last time (just today), the guy told me to open up the regulator cap and crank the Phillips screw in 4 turns and that should do the trick; which I will try tonight when I get home.

Their first suggestion was to clear the slot in the back of the burners- didn't help.

I have heard one other suggestion, but would like a few opinions if the regulator adjustment does not work - that being removing the regulator altogether. Anybody ever try that? Any safety issues to be concerned with?

Thanks,
Brad
<{POST_SNAPBACK}>

Brad,
Thanks for your input. Am new to this forum but have found it immediately helpful. I am experiencing the exact same issue with my 720-061 purchased about a year ago (although have a workaround) I just light the right side of the burners (the side that opposite the pilot flame) with a long 'fireplace' match. The temp isn't an issue as I'm able to acheive 500-600 deg within minutes. Two questions: Did the adjustment you made to the regulator (4 phillips head turns) work? and Should I be expecting even higher temps than 500-600 degrees? (I've been able to cook some 2-3 inch steaks in a pretty short time period)

Thanks - Bill
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#12 User is offline   Mad.Max 

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Posted 16 February 2006 - 10:55 PM

H3MAN, on Feb 16 2006, 03:42 PM, said:

Brad,
Thanks for your input. Am new to this forum but have found it immediately helpful. I am experiencing the exact same issue with my 720-061 purchased about a year ago (although have a workaround) I just light the right side of the burners (the side that opposite the pilot flame) with a long 'fireplace' match.  The temp isn't an issue as I'm able to acheive 500-600 deg within minutes.  Two questions: Did the adjustment you made to the regulator (4 phillips head turns) work? and Should I be expecting even higher temps than 500-600 degrees?  (I've been able to cook some 2-3 inch steaks in a pretty short time period)

Thanks - Bill
<{POST_SNAPBACK}>


This problems sounds like one that has been experienced by many when purchasing the Jenn-Air/Nexgrill natural gas grills. The grill comes with a regulator that is designed to reduced high pressure natural gas to a pressure usable by the grill. However, most modern homes now have the "standard" low pressure gas at 7". In this case the regulator is not needed. In fact, under that scenario the regulator is actually reducing the pressure below a level usable by the grill. Thus you get a poorly lit burner and low heat.

My suggestion is to completely remove the regulator from the grill and run the gas line directly to the burners. You may need to purchase a brass adaptor at your local hardware store to accomplish this. Then test the grill to see how it burns. My guess is you will see the grill burn the way it is designed to burn.

If you are concerned about doing this, call your gas company and ask them to tell you the delivered gas pressure in your home gas line. If they tell you it's at 7 inches you absolutely don't need the regulator.

Max
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