Error Code F1

Sensor open — oven thermistor circuit is open

What This Means

Disconnected or loose oven sensor connector at oven back; Disconnected CN1 on Main PCB; Failed oven temperature sensor (thermistor)

How to Fix

1. 1

   Press CLEAR/OFF, then press Bake and Broil simultaneously for 1 second to read stored F-code

2. 2

   Unplug the unit

3. 3

   Check sensor connector at oven back wall — reconnect if loose

4. 4

   Check CN1 connector on Main PCB — reconnect if loose

5. 5

   With unit plugged in, enter test mode (CLEAR/OFF, then Bake+Broil x2), press +/- to 't03', press Start — normal thermistor value at room temp is 70F to 90F displayed

6. 6

   Unplug unit, measure thermistor resistance: normal is approximately 1.09 kΩ at 25°C (77°F)

7. 7

   If resistance is abnormal, replace oven temperature sensor

8. 8

   If resistance is normal, replace Main PCB; if issue persists after Main PCB replacement, replace Power PCB