Answer Thomas, The F3 error code will be an open temperature sensor. You will want to test the sensor and wires at the control board. Test this at the 5 pin connector from pin 2 to pin 4 for the resistance of 1090 Ohms. If the sensor does not check ok then the sensor would need to be replaced and if the sensor test ok then the control board will be the issue. Read More... Answered by AppliancePartsPros.com | Tuesday, March 24, 2020