GE TrueTemp range JBP30W0B1WW — 3 of 4 burners stay on HIGH even when set to low/medium.

Does it go straight to full heat even though it is on the low setting. If this is the case the hotplate controller is faulty and requires replacement.

Replace the switch that controls this burner to get it back under control. This will solve your problem as the switch is what controls the burner temperature regulation.
Good luck!!

Every one of these ranges that I have seen with the oval style burner on them have a smaller flame then the normal round burners. And there is very little difference between the low and high settings. It sounds like what you are experiencing is normal. What the GE repairman was adjusting is called the "simmer stop". There is a small flat head screw inside the burner stem. By turning this screw you can adjust the size of the burner on the low position of the burner knob. This should be adjusted to where the burner still stays on when the knob is at the lowest setting. I do not think that you need the burner repaired. From my experience they are all like that.

The burner element that is staying ON is also the same one causing the surface light to stay on.
The switch that controls the element is bad.
Unplug the range. Open the switch control console and replace the defective switch.
Make sure the range is unplugged because of high voltage in the console.

Your range uses what is commonly refered to as infinite heat switches. Without getting into too much of the mechanics of how they opperate, basically they cycle the burner on (at full power) for a very short time at warm or lower settings,(and longer off periods), at medium type settings, on / off might be more like 50 /50, and at high, they are on 100% of the time. There is no calibration for these. Sometimes, the electrical contacts inside arch and make poor contact, or weld themselves together, giving high heat at all settings. The only way to fix this problem is to replace the individual switches, which are the part the the knobs push onto.

yes it is your control infinite switch the knob swicht that goes from 1 to 10 or min to max thanks from gilles

Replace the surface element switch for that burner.

dont know how old unit is or how familiar you arewiththe unit, but the burner will need to heat up and cycle off/on. no matter how high or low you set the setting it will heat to a specific temp and cycle off, if hte burner remained RED all the time the glass would crak( so dont go by appearnce of burner, the glass should dictate the temp

If set to high, burners should remain on. If set to medium high let's say, they would be on for maybe 70 percent of the time, off for 30 percent of the time. If set to warm, they might be on only 10 percent of the time, off 90 percent. There is a high temp limiter which could turn a burner off. If you have a burner on high and are cooking on that burner and it goes off, the high temp limiter may be faulty. It is an integral part of the burner, and would require replacement of the offending burner. Burners are individually replaceable after lifting up the glass cook top.

it appears that the air intake intake is incorrectly set or you have the incorrect gas jets fitted to the product. Regards Engineer