Kenmore Elite range - burner stuck on high

[njcjsmith]

I've got an almost 2yr old Kenmore Elite electric range w/ flat ceramic cooktop (model# 790.99019102). It's been working great until yesterday when one of the burners stuck on high during use. Unfortunately, after turning off the burner it still remained on high. The only way to turn it off is to kill the breaker.

The burner happens to be one of those dual-size burners...and the smaller (inside) burner is the one malfunctioning. The outer burner works as expected...though they are both controlled by the same knob.

Not sure what to do. Any advice?

[HayZee518]

change the burner control. there's a similar post in here about a three element burner with the center element not functioning or "looks" like its putting out less heat.

[njcjsmith]

I'll give that a try. Thanks!

[Dan O.]

User interface board

change the burner control.

That does sound like the most likely cause if the control indicates off unfortunately, on that model range it is an electronic control.

LINK > Kenmore 790.99019102 Surface Element Control (1 used on each side)

JFYI

Dan O.
www.Appliance411.com
The Appliance Information Site
=D~~~~~~

[njcjsmith]

Lesson learned

Ok, so I just ordered the element control. However, since I figured it would be several days before it gets to me and we'd really like to use the oven/range between now and then (without a continuous red-hot burner), I decided that I'd simply unplug that control and everything else should work.

Well, after kicking on the breaker, I learned two things. First, the unit doesn't like it when a control is unplugged...I got F7 error codes across the display and annoying beeps to go with them. ALSO (and more relevant, I think), I noticed that the inner burner (yes, the one I unplugged) started to heat up immediately.

So, I'm wondering...do you think something else is messed up?...since the burner seems to heat up regardless whether the control is plugged in?

[Dan O.]

Power board

I decided that I'd simply unplug that control and everything else should work... when a control is unplugged... I got F7 error codes across the display

Yes, that is what that error message means on that particular range model. The control 'looks' for a problem in the burner control circuitry and with it not there at all, lets you know something's a miss.

I noticed that the inner burner (yes, the one [whose control] I unplugged) started to heat up immediately.

Than it may be a 'sticking' relay in the power board instead of a problem in the control board. The element power board shouldn't be energizing the element circuit without receiving any input from the element controller.

LINK > Kenmore 790.99019102 Surface Element Power Board

JMO

Dan O.
www.Appliance411.com
The Appliance Information Site
=D~~~~~~

[HayZee518]

the control units circuit may be a solid state device - a triac that looks like a black three pinned transistor soldered into the board. it is an off-on device that goes on with what is called a "gating circuit" on one of the legs. it then conducts and turns on. when this gating signal reduces or is absent it shuts off and shuts down the triac.