[natezn]

Left front burner stays on when temp setting is 3 or higher. it doesn't cycle on & off like it used to. What is the most likely part failure the control switch or the burner assembly with temp sensor?

The switch has some black around the case and the original switch part # has been replaced by a new one. I am leaning toward just replacing the switch since it is 1/3 cost of burner assy and part # discontinued.

I visually inspected the switch and the burner assy, but can't see any problems other than blackening on switch. Can't decide which part is failing without knowing what to test with ohmmeter.

[denman]

Here are your parts
Replacement parts for WHIRLPOOL RF368LXKW0 | AppliancePartsPros.com

Here is the tech sheet
http://www.servicematters.com/docs/w...%208053296.pdf

You can probably check the element from the control panel.
Be sure to mark the wires before removing them from the control.
Unplug the unit
Remove the wires that go to the element at the control,
Measure across these should be about 24 ohms.
Then measure each side to the units frame, both should be open (infinite ohms)
If OK order an infinite switch Item 4 Section 2.
Be sure to get the correct one which I believe is AP3095444.