I need to calibrate my southbend model #x436d standard gas oven

Various ideas in the videos, but one of the articles said that Bertazzoni had a batch of bad thermostats. That model is discontinued/

https://www.google.com/search?q=bertazzoni+pro304inmxe+30+calibrate+oven+temperature

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If it is new contact the people that sold it to you for warranty repair. If not Just set it higher, that is a lot lest costly then getting the appropriate equipment to calibrate it. You can also replace it.

Oven will not hold correct temperature:------- This can be caused if temperature probe not working.Resistance across temperature probe leads at room temperature (70°F) should be approximately 1096 ohms.----------- Other possibility for this problem is :--- Temperature control not calling for heat.When heat is required, there should be continuity between terminals 6 and 7 on temperature control.-----------Inadequate or improper ventilation.Check ventilation hood. Verify draw and make up air adjustment.-----------If all this checked out ok then its calibration problem.For calibration follow this procedure:--
It can be problem with temperature controller. TEMPERATURE CONTROLLER (Standard-Control Models Only) The calibration of the temperature controller should not be changed until sufficient experience with cooking results has definitely proved that the temperature controller is not maintaining proper oven temperatures. Before any recalibration is attempted, the oven temperature should be checked by the following procedure: 1. Remove all trays and pans from the oven. 2. Place a thermocouple or a reliable mercury oven-type thermometer at the center of the middle rack. 3. Turn the oven ON and set the temperature control knob to 400°F. 4. The amber "heat on" light will go out when the oven temperature is reached. 5. Allow three cycles for the temperature to stabilize. 6. Read the thermocouple or thermometer immediately after the light goes out for the third time, and again immediately after it comes on the next time. 7. If the average of these readings varies by more than 10°F from the dial setting, recalibrate by the following procedure. Recalibration should be attempted only by a competent service technician. Use the following procedure to recalibrate the oven: 1. Loosen the two set screws that secure the temperature-control knob to the temperature-control shaft. 2. Remove the knob from the shaft, being careful not to rotate the knob or shaft. 3. Replace the knob on the shaft so that the indicator mark on the knob points directly at the temperature that was measured at the center of the oven. 4. Re-check the oven calibration. ----------- Part number for temperature probe is 1181996 and you can order if from the Southbend service center. -------- If you want the manual and wiring diagram for your oven.Please click the link directly:-- http://www.retrevo.com/search/v2/jsp/mytrevo/myTrevo.jsp?page=man ----------- after you click the link,a page will open in that you fill the 5 letter number.And click the "download now " option.It will ask you to save or discard.Click the save option and download will start.It will take 2 mins to download.Then click the download file to open it.And go through the manual.------------This will help.Thanks.Helpmech.

Without the Model Number I can only give you Basic instruction.

If your machine is Digital the best way to calibrate if find the manuel of your machine useing your Model number.

Some of the digital models : select bake and press and hold the up or down Temp button for 5 Sec to enter the calibration mode.

Some models require you do get the temp to over 400 deg befor you can enter the Calibration mode.

If your machine has a turn knob ... Take the knob off and see if there is a small screw in the center... This is the calibration screw.

off the bottle you will need a regulator and at the back of the stove you will need a yellow gas tap as an isolator remember bottle pressure can reach as high as 1200kpa on a hot day and you only need 2.75kpa for the range and your line size is 1/2'' and use gas tape on all fittings and leak test with soapy water

ther is a temp sensor that goes from the control valve to the oven,this may be the problem, make sure sensor probe is tight where it screws into the gas valve and other end is not just hanging in the oven, it attaches to the top of oven,if it's where it's supose to be, I'd change that first

google your model # youl see lots of links

You can download it here but you need the right model #.
http://shared.whirlpoolcorp.com/product_literature/search.jsp?siteCd=MCF
As for the temp adjust it is best if you get an repair man out to do that.
Good Luck

HI thanks for your question. there is a oven sensor , located in the oven, top left corner. replace this part. thanks the appliance doc. please rate my answer. thanks

faulty switch, change the switch.