Modern refrigerators are essentially computers with compressors attached, and when something goes wrong they tell you about it — usually with a blinking code on the display or dispenser. Below we translate the most common Samsung, LG, and Whirlpool refrigerator error codes into plain English, tell you what (if anything) you can safely try yourself, and flag the ones that mean it's time to call a technician.

A Sacramento note: our long stretches of 100°F-plus heat make refrigerators run harder, so defrost and fan-related codes tend to spike here in summer. And because Sacramento-area water is hard (roughly 75–150 ppm), the scale that builds up in ice-maker and water lines is a frequent trigger behind ice-maker and water-related fault codes. Read a code as a starting clue, not a diagnosis — the same code can have several root causes.

Samsung Refrigerator Error Codes

Samsung codes appear on the front panel or the water/ice dispenser display. A quick way to clear a false alarm is a power-cycle: unplug the fridge for 2–3 minutes, plug it back in, and see if the code returns. If it comes right back, note the code and call for service.

22E / 22 C: Ice-maker fan or ice-room fan fault. Often the fan is iced over because of a defrost problem in the ice compartment. This usually needs a technician to clear the ice and address the defrost cause.
5E / 5C: A defrost sensor fault. The sensor that manages the defrost cycle isn't reporting correctly, which can lead to frost buildup and warming. Requires diagnosis and typically sensor replacement.
OF OF (or "OFF OFF"): This one fools a lot of people — it's not a fault at all. It means the fridge is in Demo/Cooling Off mode (common on floor-model units). Holding the correct button combination (often Energy Saver + Fridge, or Power Freeze + Power Cool, for several seconds) exits it. Check your model's manual for the exact combo.
1E / SE: A sensor or communication error. Try a power-cycle first; if it persists, the control board or a sensor needs attention.
PC ER / CE: A communication error between the main board and the panel — usually a wiring or board issue that needs a pro.

LG Refrigerator Error Codes

LG displays error codes on the dispenser or main display, and many LG models use a smart-diagnosis feature you can run through the ThinQ app. Here are the common ones:

OF F (or "OF"): Like Samsung's version, this is often not a malfunction — it indicates the display or demo mode is active. Pressing and holding the designated buttons returns the unit to normal cooling. Confirm the button combination for your model.
Er FF / Er IF: These point to the freezer fan (evaporator fan) circuit — frequently a fan iced over or a failed fan motor. The freezer may stop getting cold. This is a service call.
Er rF: Refrigerator fan (condenser or evaporator) circuit error — similar cause and similar fix path.
Er dH: Defrost heater fault. The defrost system isn't clearing frost properly, which snowballs into cooling problems. Needs diagnosis.
Er 1F / Er IF: Ice-maker fan fault, often tied to ice buildup — common in our climate and worth addressing before it stops ice production entirely.
Er CO: A communication error between the display and main PCB — typically a board or wiring issue.

Whirlpool Refrigerator Error Codes

Whirlpool (and its sibling brands like Maytag, KitchenAid, and Amana) tends to use letter-and-number combinations on newer models with a digital display. Older units may just flash the temperature display instead.

PO (Power Outage alert): Not a fault — it's telling you the fridge lost power and the interior warmed past a safe threshold. Press the appropriate button to clear it, and check that food is still safe.
E0 / E1 / E2: Sensor faults (often the freezer or fresh-food thermistor). These affect temperature regulation and usually require sensor replacement.
ER (or flashing temp display): A general error indication — the control has detected an out-of-range condition. Power-cycle first; if it returns, get it diagnosed.
6 / SY EF: Evaporator fan fault on some models — the freezer fan circuit needs attention, frequently due to ice or a failed motor.
dr / door alerts: Indicates a door was left open or a door switch has failed. Check that the door seals fully; if the alert persists with the door shut, the switch may be bad.

Safe First Steps for Any Fridge Error Code

Power-cycle the unit: unplug for 2–3 minutes, then restore power. This clears transient faults and false demo-mode triggers.
Rule out demo/display mode: Samsung "OF OF," LG "OF F," and Whirlpool "PO" are frequently not failures.
Confirm the door seals and nothing is blocking a vent inside — poor airflow mimics fan faults.
Write the exact code down before it clears. It saves diagnostic time and helps us bring the right parts.

When to Call a Professional

Fan-circuit codes (iced-over evaporator or condenser fans), defrost-system faults, sensor and thermistor errors, and control-board communication errors all require proper diagnosis — the displayed code narrows things down but rarely names the exact failed part. Guessing and swapping parts on a modern fridge gets expensive fast. If a power-cycle doesn't clear the code, or the fridge isn't holding temperature, it's time for a technician. A warm refrigerator is also a food-safety clock, especially during a Sacramento summer, so don't wait it out.

Related Guides & Services

Sacramento refrigerator repair — same-day diagnosis of error codes, no-cool faults, and ice-maker issues on all brands.
Samsung appliance repair — dedicated service for Samsung refrigerators and their fan and defrost fault codes.
LG appliance repair — help with LG Er FF, Er IF, and OF F codes and smart-diagnosis results.
Whirlpool appliance repair — sensor, defrost, and control-board repairs for Whirlpool-family fridges.
5 reasons your refrigerator isn't cooling — the mechanical causes behind many of these codes.

Samsung, LG & Whirlpool Refrigerator Error Codes Explained