The F3 error code indicates an open circuit at the oven temperature sensor. Usually this means that the temperature sensor has to be replaced. Infrequently, the problem is with the wiring between the sensor and the electronic control board or the control board itself. You should check the continuity of the wiring and across the temperature sensor and for problems in the wiring harness connections before ordering the replacement parts. The manufacturer's recommendations are to replace the temperature sensor first. If the error code recurs, then you replace the control board.
Your range's model number is probably RS385PXBQ0. Most Whirlpool models end with a number. There are several sources for the parts diagram and price list. The temperature sensor is part 23 on the oven body diagram. One diagram is here https://www.searspartsdirect.com/model-number/RS385PXBQ0/1198/0124100.html . Another source is https://www.partselect.com/Models/RS385PXBQ0/Sections/OVEN-BODY/?ModelID=765297&ModelNum=RS385PXBQ0&mfgModelNum=&ManufactureID=3&Selected=P0ICVYKN&Position=4&mfg=Whirlpool&Type=Range&Mark=4 .
If you look for the control board, it's part 19 in the Main Top diagram at the above sites. The control board is no longer sold by Whirlpool. If it's faulty, the recommendation is to send it to a repair shop for a rebuild. Replacing the range is a better solution if the temperature sensor and wiring are not faulty.
I hope this helps.
Cindy Wells
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Wall Ovens , Whirlpool , Appliances. The error code F3 E2 is telling you the electronic control on the range detected a high temperature in the oven. This can be caused by a defective oven temperature sensor or the electronic range control (ERC).
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SOURCE: whirlpool gas range m#SF114pxsq1 diplays an F1 error code
HI. This is a basic Electronic Range Control Board failure code. I would advise to try a hard reset. This may correct the fault, if the damage is not severe. Simply unplug, or shutdown the appropriate circuit breaker for five minutes. After the five minutes have passed, kindly re-introduce power to the unit once more. Try to preform a baking cycle. if the code continues to illuminate during the attempt to operate the range, simply replace the main electronic control board(ERC or Clock).
SOURCE: Have an older model Whirlpool
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If you have already tried cleaning the vent then the problem is with the Thermal fuse. When the thermal fuse goes bad it cannot be reset and replacing it is recommended repair. It is located on the blower wheel housing inside the rear panel to the exhaust duct. You can test it for continuity before replacing.Please get back to me if you have any other questions.
Kevin
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