KitchenAid dual-fuel range - cooktop burners not maintaining flame / pressure

[TrippKnightly]

KitchenAid model duel fuel commercial range.  Model KDRU767VSS.   About 1 month old.  Cooktop burners worked fine this morning, but now they go strong upon starting and within say 5 secs of starting recede to more like low (maybe higher than simmer).  ALL burners exhibit same performance.  Further, there were no spillovers or anything of that sort.

Any ideas?  Thx

[BrewHobbyTech]

That's not a complete model number, and if it's only a month old it's obviously under warranty.....and that's a heck of an expensive house stove. Off the top of my head I'd say it has to do with a gas regulator, either coming into the home or business or the regulator on the stove itself. 

[BrewHobbyTech]

Sorry, gas pressure regulator. Look for a common source for all burners. The oven(s) may have its own regulator(s) and the top burners may be separate. 

[TrippKnightly]

Thx.  It's dual fuel so no gas to oven to help validate.  Hot water heater unaffected (tomorrow will reveal truth on that) suggesting problem @ unit itself.  I've never seen the model num expressed any longer (not a serial number of course).  I got a ridiculous discount (I doubt a single person pays that price), but you preach to the choir on price... at least it wasn't a wolf.

[BrewHobbyTech]

1 hour ago, TrippKnightly said:

Thx.  It's dual fuel so no gas to oven to help validate.  Hot water heater unaffected (tomorrow will reveal truth on that) suggesting problem @ unit itself.  I've never seen the model num expressed any longer (not a serial number of course).  I got a ridiculous discount (I doubt a single person pays that price), but you preach to the choir on price... at least it wasn't a wolf.

No matter the "ridiculous" discount......unless you got it off the back of a truck in an alley somewhere.......you should have a warranty. Yeah, the unit lists for 8K or something like that?? That's outrageous......I'd have to be given "an offer I couldn't refuse".....to pay even 3K for it......but anyway, it is what it is. As I said, off the top of my head I believe it's a gas pressure problem(pretty obvious)......but find a common source for all the top burners. I believe that would be the pressure regulator. Let us know what you find. 

One more thought......it's also possible these beasts have some sort of sensors on each burner......who knows why...yeah, to sense how much gas is going to the burner. If this unit has something like this......that could be the problem also.......which means it could be a board.....or who knows what........anyway......I'm going with a pressure regulator.......until I'm schooled on something else...........

 

 

[TrippKnightly]

Of course there's a warranty.  And should it come to it I'll go through the effort / inconvenience of scheduling a service call.  Meanwhile, on an outside chance there's some kind of reset sequence (don't have the service manual) figured I'd ask and maybe some kindred knucklehead somewhere will have had the same problem.  I haven't tried something pathetically obvious like throwing it's breaker for 15 minutes... which I'll do shortly.  Plus it's the weekend and didn't have time to rap w/ KA on their svc # today Saturday.

Everybody has their own opinion about the right price to pay for an appliance (and which brand, and which tier of model, which features matter, reliability...).  There's also an old saying about opinions.

Anyway thanks again for your input (and I mean that!) and I'll post here what I learn for posterity (may take a bit if requires a svc call).

[Hiroshi]

Regulator testing includes turning ALL the burners on and then "fluttering" one of the burners knobs and observing if it affects the flame height of the other burners... if it does, replace the regulator- is the method I was taught.

[TrippKnightly]

Here's an update.  Turns out it was not a problem w/ gas distribution at the cooktop.  Not long after I last responded, I noticed we had no hot water.  This was the weekend and we'd been out of town intermittently.  Anyway, that of course took it in a different direction.  This is in California, and the service entry line has a seismic shutoff which got thrown, not due to quake but because (probably) it got jarred by somebody or something, simulating quake.  My wife assured me that the gas dryer had been working fine not long before we noticed the rage problem but there was still an interval for the valve to get jarred.  Memo to file: always validate problem is at a single appliance!

[Hiroshi]

I had a customer once that was furious at what he perceived to be my failure to fix the no heat condition of his dryer- when I told him his gas was shut-off, he freaked out even more screaming: "I just took a piping hot shower!!" At that point, I calmly pointed out that his water heater held 40 gallons. In a huff, he led me to the gas meter because I requested he accompany me to check it... sure enough the gas company had installed a pin in it.

"No charge," was all I said.

Interesting thread though, Tripp, we don't have such seismic devices here in Illinois, but I have experienced one earthquake here...