Error Code F3
Key short error — touch key stuck or communication failure with Touch IC
Moderate
Address soon - your appliance may not work properly
Also displayed as: F3
How to Fix
- 1
Plug in the unit and note which buttons are unresponsive or stuck.
- 2
Unplug the unit and check the connection between Touch PCB and CN53 on Main PCB — reconnect if loose.
- 3
Plug in the unit and enter key test mode: press CLEAR, press BAKE+BROIL simultaneously, press BAKE+BROIL again, press NUM 7. Press each button in the displayed sequence and verify a beep sounds and the corresponding number appears on VFD.
- 4
If a button does not beep/respond or the sequence is disrupted, replace the Control Panel (Glass Touch PCB assembly).
- 5
After replacing the Touch PCB, re-enter key test mode to confirm all buttons operate correctly.
- 6
If all buttons pass key test but F3 persists, replace the Main PCB.
This Error Applies To
LG LRG4115ST Series Ovens & Ranges
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