I own a spectra range Model # JBP30B0B4WH The problem is that the oven temp, is off about 15 degrees how can I adjust it? Roy

You can adjust the bake average temp +/- 35 degrees this is called calibration.
Here's How:
To Adjust: 1. Press the BAKE pad (upper or lower oven) and enter 550° F. 2. Press and hold the BAKE pad (upper or lower oven) for several seconds until TEMP ADJ is displayed. 3. Press the AUTO SET pad - each press changes the temperature by 5° F. The control will accept changes from -35° to +35° F. 4. If the oven was previously adjusted, the change will be displayed. For example, if the oven temperature was reduced by 15° F, the display will show -15° F. 5. When you have made the adjustment, press the CANCEL pad and the time of day will reappear in the display. The oven will now bake at the adjusted temperature.
Do this first and you will be back to normal. If your using a oven temp. checker make sure you let the oven cycle for awhile. Preheat should take about around 10min. Remember 350deg is an average temp.
Have a great day!

all ovens very sometimes 10-25 degrees +/- depending on the brand..nothing you can, do set the temp a little higher if you know its off.

you shouldnt need to adjust the burners for a temp problem.
the control has a built in calibration setting and it should be described in your owners manual.
if you dont have the manual, then try to set the oven temp to max, 550, and then hold the bake button in for 10 to 30 seconds. after that it should beep and show you a 2 digit number like 00. that is the calibration mode, then you can adjust it up or down +/- 35 degrees. try to make a small adjustment first like 10 degrees and see how it bakes.
if it takes too long to bake, then use + degrees, if it is burning things then lower -10 degrees.
hope that helps you.

18 mins from room temp to 350 is factory standard,
you may need to calibrate the range, most now adays come factory set at -25 degrees for safety
depending on your model number in your instruction manuel should be a part about recalibrating it sounds like your about 25 degrees off

If only one element does not work, then test heating element continuity using a multimeter.
If oven does not bake or broil, then test temp probe.
If there is nothing wrong with elements and temp probe , then test wiring harness to control panel and timer control board.

Enter the model number on one of two websites below to get parts and diagrams for your appliance:


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If it's the light that indicated the element is on, replace the switch. If it's the light that indicated the element is hot, replace the element.

If you oven temp is off by +- 50 degrees, thermostat needed to be change. to check and adjust the oven thermostat usually we place the oven thermometer in the center of the oven, run the oven at 350 degrees for minimum 30 minutes and check the oven temperature, It should be +- 25 degrees, if it needed adjusting, there is the adjusting slot screw in the center of the thermostat stem, to adjusting it ( do not turn thermostat stem during adjusting ), turn adjusting screw counter clockwise to raise the the temp, clockwise to lower the temp, turn it a little at a time and wait 15-30 minutes before do the next adjustment until the temp match with the oven knob. To adjust the oven burner air and gas mixture, first turn the air shutter close, you will see yellow flame, then open the shutter until the yellow flame disappear and them open it a little more, now you are done. For the oven uneven cooking? you may have a bad oven burner tube, during operation some of the flame may be lift off, disappear or flame being uneven, you can check it with the kick panels off to see the flame, if these are the case, you needed to change the oven burner tube,

First of all, do not use the oven thermometers from a grocery store. they can be off by 20 degrees or more. These directions may help you for electronically controlled ovens. The older manually controlled ovens have a small screw head in the center of the oven temperature knob that can be adjusted in usually 10 degree increments.


To Adjust the Thermostat
Touch the Bake and Broil Hi/Lo pads
at the same time for 3 seconds until the
display shows SF.
Touch the Bake pad. A two digit number
shows in the display.
Touch Bake once to decrease (-)
the oven temperature, or twice to
increase (+).
The oven temperature can be adjusted
up as much as 35°F. or down as much
as 35°F. Touch the number pads the
same way you read them. For example,
to change the oven temperature 15°F,
touch 1 and 5.
When you have made the adjustment,
touch the Start pad to go back to the
time of day display. Use your oven as
you would normally.
NOTE: The thermostat adjustment for Baking
will also affect Convection Baking or Convection Roasting.

Puzzeled, usually when there is a stuck or shorted keypad there will be an error code. First let's see if we can tell if we are in Centigrade or Ferenhiet. Press the bake and broil button together for 2 or 3 seconds. SF should appear in the display. Press the broil pad again and C or F will be displayed. Toggle to F and press start. See if that was the problem. If not try to increase the speed of the + and - keypads. Press bake and broil together for 2 seconds until SF displays. Press the + keypad increase the speed of the control. It should toggle from 1 to 5, 5 being the fastest. Press start and see if that works. If niether works..then have someone remove the keypad ribbon cable from the control board and clean the ends with an eraser. See if that solves the issue...Catriver..post back and let me know.

check your Measure oven temperature sensor circuit at oven temperature sensor (should be approx 1100 ohms at room temp); check for cut or pinched wire or loss of contact and /or Replace Electronic Range Control (ERC)