If the LREL6325's controls do nothing, LG says first to check that the range is not in Lock Out (the lock icon shows and Loc may appear) and not in Sabbath mode (sb in the display). Press buttons in the center, since they may not respond if pressed too far from the middle. A flashing colon in the clock means power was interrupted, and LG lists F-3 (key short error) and F-9 for the control. Sb, 5b, S6 or 56 on the display is not an error code; it is Sabbath mode.
Differential
Likely causes of “LG range or oven display or controls are blank, locked or unresponsive”, and how to tell them apart
- 1
Lock Out is active
What separates it Buttons beep but nothing starts and Loc or the lock icon shows
How to confirm Hold CLEAR/OFF for three seconds until you hear the unlock melody
- 2
Sabbath mode is on
What separates it The display shows sb and all function buttons are inactive
How to confirm Hold Settings for three seconds until sb disappears
- 3
A key short error
What separates it The control beeps repeatedly and shows the F-3 fault code in the display
How to confirm Turn the oven function off, clear the code and reprogram; note the code if it returns
- 4
Buttons pressed off-center
What separates it Some presses register and others do not, depending on where you touch
How to confirm Press in the center of each button, even for secondary functions
Before you touch a setting
Record this first — changing settings destroys the evidence
- The exact symbol or code on the display
- Whether the range recently lost power
- Whether the cooktop knobs still work
Try in this order
0 of 5 completedRead the indicator
ReversibleLook for Loc, the lock icon, sb or an F code. LG's manual explains each: Lock Out, Sabbath mode, or a fault.
Unlock or exit
ReversibleFor Lock Out hold CLEAR/OFF three seconds. For Sabbath hold Settings three seconds or until sb disappears.
Press the center
ReversibleLG says press buttons in the center for best results, even for a button's secondary function.
Reset the clock
ReversibleIf the colon flashes, press Clock and reset the time, or press any key to stop the flash after a power interruption.
Clear an F code
ReversibleTurn off the function to clear the display and stop beeping, reprogram the oven and call service if it repeats.
Model-specific
What is true of this model and not of its siblings
- Sabbath mode
- Sabbath mode can only be used with Bake. A Sb code is not a fault. To exit, press and hold Settings for three seconds or until sb disappears.
- Fault codes
- F-3 is a key short error and F-9 means the oven is not heating. LG says to turn off the oven function to clear the code and reprogram it, and to record the number and call service if it returns.
- Installation facts
- The range needs an anti-tip bracket engaged at all times, a 40 or 50 amp range cord, 30 inches minimum clearance to an unprotected cabinet above the cooking surface and 15 inches between counter and adjacent cabinet bottom. Leveling legs at the base are adjusted until a level on the center rack reads level.
- Customer service
- LG's customer service number in the manual is 1-800-243-0000 in the United States and 1-888-542-2623 in Canada, used for missing accessories and service. The model and serial number plate is on the range and the Tech Sheet is on the back; leave the labels in place and note both before calling.
- Parts for this problem on the LREL6325 (RepairClinic, 2026-09-21)
- led display module, part number EAV64012008, at $108.10.
- Other models this page answers
- These steps also fit the LREL6323 electric range, LSGL6335 gas range, LSIL6336 induction range, WCEP6423 combination wall oven.
Stop boundary
When this stops being a self-service repair
- !If F-3 returns after you clear it, record the code and call LG service for the control
- !If the panel is unresponsive after a breaker reset and no lock or sb indicator shows, call service
Evidence ledger
Sources behind this answer
LG's online owner's manual for this model: the Cooking, Parts and Features, Noises and Wi-Fi troubleshooting tables, Lock Out, Self Clean, Settings, InstaView, Warm Zone and LG ThinQ sections.
LG USA support page listing this model's manuals and warranty.
Parts and list prices as shown on RepairClinic's parts search for this model number on 2026-09-21.
Exact questions
Common questions
What does sb mean?+
Sabbath mode is on, not an error.
Why is the colon flashing?+
The range was just plugged in or lost power for a moment.
Why do buttons not respond?+
Lock Out or Sabbath mode may be on.
Where should I press?+
In the center of each button.
Does Lock Out disable the timer?+
No, the timer and interior oven light keep working.
Does the panel need a center press?+
Yes, LG says to press buttons in the center for best results.
What does COOKTOP HOT mean?+
A surface is still too hot to touch.