Samsung Refrigerator Error Code 50 E — What It Means & How to Fix It

What Does This Error Mean?

The 50 E error on a Samsung refrigerator points to a defrost system fault. Samsung refrigerators automatically defrost the evaporator coils on a regular schedule. If the defrost heater, defrost thermostat, or defrost sensor fails, ice builds up on the evaporator and eventually blocks airflow — causing the fridge to warm up. Addressing defrost faults early prevents the more serious secondary problem of complete cooling loss.

Affected Models

RF28R6201SR
RF23M8070SR
RF23J9011SR
RF27T5241SR
RF28HFEDBSR
Most Samsung French door and side-by-side refrigerators with automatic defrost systems

Common Causes

Defrost heater has burned out and the evaporator coils are icing over without being defrosted
Defrost thermostat (bi-metal thermostat) has failed — the heater cannot turn on without its signal
Defrost temperature sensor is sending incorrect readings — the control board does not initiate defrost at the right time
Main control board defrost relay has failed — the board cannot activate the defrost heater
Defrost drain is blocked — melted ice cannot drain away and refreezes at the base of the evaporator, triggering a sensor fault

How to Fix It

Try a forced defrost cycle first. On most Samsung refrigerators, press and hold the Energy Saver and Fridge buttons together for 8 seconds to enter Fd (forced defrost) mode. Allow the cycle to run for 20 to 30 minutes until you hear a beep or see the display return to normal.

After forced defrost completes, wait 30 minutes for the fridge to cool back to temperature. If it cools normally, forced defrost confirmed that ice buildup was the immediate cause.
Unplug the refrigerator and remove all freezer contents. Remove the back panel inside the freezer compartment — this covers the evaporator. Inspect the evaporator coils for heavy ice buildup. A solid block of ice around the coils confirms the defrost system has been failing.

Use a hair dryer on low heat to manually defrost the coils if found heavily iced. Do not use sharp tools to chip ice — the coils are fragile.
Test the defrost heater resistance with a multimeter. Disconnect the heater wires and measure across the heater terminals. A healthy heater shows a resistance in the range specified for your model (typically 20 to 100 ohms). An open reading (infinite resistance) confirms the heater has burned out.

The defrost heater looks like a glass tube or metal rod running alongside the evaporator coils.
Test the defrost thermostat. This is a small bi-metal device clipped onto the evaporator. At room temperature it should show continuity (closed). A thermostat that shows open at room temperature has failed and is preventing the heater from activating.

The thermostat opens at high temperature as a safety cutout and closes again at low temperature. A permanently open thermostat means defrost can never complete.
Check the defrost drain. Located at the bottom of the evaporator, the drain hole should be clear of ice and debris. Pour a small amount of warm water through it — it should drain freely. A blocked drain causes defrost water to refreeze and build up under the evaporator.

A blocked drain often causes a loud cracking sound as sheets of ice shift inside the freezer compartment — a common symptom before 50 E appears.

When to Call a Professional

Defrost system repair involves accessing the evaporator behind the back panel of the freezer compartment. The repair requires partial disassembly of the freezer interior. Expect $150 to $350 for defrost heater, thermostat, or sensor replacement at a shop.

Frequently Asked Questions

How often should a Samsung refrigerator defrost automatically?

Most Samsung models defrost every 6 to 12 hours, depending on usage and model. The defrost cycle typically runs for 20 to 30 minutes. You may notice the compressor stopping and the fridge becoming slightly quieter during defrost — this is normal.

Can I prevent 50 E from coming back after fixing it?

If the defrost heater was the cause, replacing it should prevent recurrence for many years. If the defrost drain was blocked, cleaning it and adding a drain cap heater prevents refreezing. Some Samsung models have a known history of defrost issues — ask your technician if a defrost kit or upgraded parts are available for your model.

Does 50 E mean my food will spoil?

Not immediately — the fridge may still be cooling for now. But if the defrost system is failing, ice will continue to accumulate on the evaporator. Eventually airflow will be blocked completely and the fridge will warm up. Act within a day or two of seeing 50 E.