LG refrigerator — Error Code OF
The refrigerator is in Cooling Off (Demo) mode; the compressor is disabled.
What it means
The 'OF' or 'O FF' display on an LG refrigerator is not actually an error code indicating a hardware failure. Instead, it indicates that the unit has been placed into 'Cooling Off' mode, commonly referred to as Demo Mode or Showroom Mode. When this mode is active, the main control board intentionally cuts voltage to the linear compressor, condenser fan, and evaporator fans. The interior LED lighting and the user interface display remain fully operational to allow customers to inspect the unit in a retail environment without the appliance consuming the high amperage required for cooling. If you see this code in a residential setting, it typically means the mode was accidentally activated during cleaning, a power surge triggered a logic fault in the control board, or the delivery team forgot to disable it after installation.
Likely Causes
- 1 Accidental Button ActivationThe most common cause is wiping down the display panel with a cloth and inadvertently holding the specific button combination that triggers Demo Mode.
- 2 Power Surge or OutageA sudden spike or drop in voltage can cause the main control board's EEPROM to glitch, resetting the appliance to its default showroom state.
- 3 New Installation OversightIf the refrigerator is brand new, the delivery and installation crew may have simply forgotten to take the unit out of Cooling Off mode before leaving.
- 4 Faulty Main Control BoardIn rare cases, a shorted main control board or a stuck relay will fail to exit the demo state, permanently locking out voltage to the compressor.
How to clear / reset
To clear the OF (Cooling Off) mode, you must input the specific key combination on your front dispenser display. For most LG models, open the right refrigerator door, then press and hold the 'Refrigerator' and 'Ice Plus' buttons simultaneously for 3 to 5 seconds. You will hear a chime, and the display will revert to the standard temperature settings. If your model has a different interface, look for the 'Refrigerator' and 'Express Freeze' buttons and hold them. If the unit refuses to exit OF mode after multiple attempts, unplug the refrigerator for 5 minutes to hard-reset the main control board, then try the button combination again.
Common replacement parts
When to call a pro
If you have performed the reset sequence multiple times and power-cycled the unit but the OF code remains, you likely have a failed main control board or a shorted display interface. Call Axis Appliance Repair at (760) 439-7522. We provide a $90 diagnostic (waived if you proceed with the repair) to test the board's EEPROM and voltage outputs to the compressor. All our control board replacements come with a 1-year parts and labor warranty.
FAQs
How much does it cost to fix the OF code?
Usually $0, as it just requires a button combination reset. If the control board is faulty and stuck in demo mode, repairs range from $250 to $450 including parts and labor.
Can I fix the OF code myself?
Yes, 99% of the time you can fix it by holding the 'Refrigerator' and 'Ice Plus' (or 'Express Freeze') buttons for 3 to 5 seconds until the control panel chimes.
Will the OF code damage my food?
Yes, because the compressor is completely disabled in this mode. The refrigerator will not cool at all, and your food will spoil if the mode is not disabled promptly.
Why did my fridge go into OF mode by itself?
It is usually caused by wiping down the display panel and accidentally holding the activation buttons, or occasionally by a power surge that resets the board's memory.
How long does it take for the fridge to cool after clearing the code?
Once the OF code is cleared, you should hear the compressor engage within 1 to 2 minutes. It will take 12 to 24 hours for the compartments to fully stabilize at the set temperatures.
Need help with OF?
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