Samsung · Refrigerator error code

OF OF / O FF / OFF OFFCooling Off (demo/showroom) mode

Cross-checked Power off, standard tools

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Demo (showroom) mode runs lights and display with cooling off. It's a key combination, not a repair. If it returns after exit, the panel may be faulty.

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Rule out settings, demo/cooling-off mode and airflow first, then confirm whether the compressor and condenser fan run. If the compressor is running but nothing gets cold, or it won't start even though the start components and power check out, it's a sealed-system problem and goes to an EPA 608-certified tech.

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LG linear/inverter compressor fridge not cooling

Rule out demo mode, airflow, fans and defrost first, then use LG's forced-run diagnostic to see whether the compressor runs. If the compressor runs but doesn't cool, or won't start with a good board, it's a sealed-system failure: refer it to LG service or an EPA 608-certified technician and check the compressor warranty.

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