Samsung Microwave Error Codes: 7777, E13, E24 & SE Meaning + Fixes

Struggling with a Samsung microwave showing 7777? This guide explains what that code means, how to reset your microwave, and also breaks down key errors like E13 (sensor issue), E24 (over-temperature) and SE (keypad short) — with easy-to-follow troubleshooting.

Samsung Microwave 7777 Message – What It Means

• The 7777 message isn’t listed in official Samsung error code materials and is considered non-standard.
• Most commonly it suggests a faulty control/circuit board when the microwave becomes unresponsive. Usually, none of the buttons are responsive. The circuit board controls everything.
• Temporary fix: Unplug the microwave for 2–5 minutes to reset electronics.
• Real solution: If 7777 returns, the control board likely needs replacement by a technician.
• Always check your warranty before calling a technician.
• If you are a technician, you can try testing the board for continuity (see the end)

Microwaves on Boats: The “7777” Error

Note: The 650-watt Samsung model is a staple in marine kitchens due to its compact size, but boat owners frequently report a recurring 7777 error code. This is often caused by unstable power outlets or electrical fluctuations unique to marine environments. Many owners inadvertently “fix” the issue by moving the unit to their home for testing—this acts as a temporary reset, but the error typically returns once the microwave is reinstalled on the vessel. If you encounter this code, a permanent electrical inspection of the boat’s circuitry may be necessary.

🛠️ Most Common Samsung Microwave Problems

Here’s what usually goes wrong, based on repairs and user reports:

🔘 1. Touchpad / Button Issues

Buttons stick, act like they’re pressed when they’re not, or don’t respond.
Cause: Moisture, grime, or wear in the keypad / membrane / control board.

📟 2. Control Board Communication Errors

Displays codes like C-F0 / E-83 / TE when the main control board can’t talk to sub-boards.
Cause: Faulty control board or connection ribbon.

🌡️ 3. Temperature & Sensor Failures

Temperature or humidity sensors fail, especially on models with steam/air fryer features.
Cause: Aging sensors or wiring issues

🚪 4. Door Latch & Safety Errors

Errors such as C-d0 / E-36 when the microwave thinks the door isn’t fully shut.
Cause: Faulty latch, misalignment, or sensor problem.

🔄 5. Overheating / Over Temperature

Errors like E-24 / C-21 when the unit overheats (too long, poor ventilation).
Cause: Vent blockage, too long cooks, or failing internal safety cutoffs.

🍲 6. Unexpected Power Cycling / Shut-off

Microwave stops mid-cycle, resets clock or turns off unexpectedly.
Cause: Thermal cutout trips (overheat), turntable motor overload, or internal sensor issue. (commonly reported by users)

🧠 Quick Troubleshooting Before Calling Support

Try these before a professional visit:

1. Power Reset: Unplug for ~1–5 minutes, then plug back in.
2. Clean Panel & Buttons: Especially if steam or spills got inside.
3. Check Ventilation: Leave space around the unit so it cools properly.
4. Observe Patterns: Does it only happen with certain foods / steam? That gives clues.

Many error codes (especially C-F0, C-F2, SE, TE) can be caused by moisture or electrical glitches that a simple reset fixes — but persistent codes usually require service.

Read: Microwave Blown Fuse Symptoms

🛠️ Understanding the Samsung Microwave “E13” Error Code

The E13 error code is a specialized alert typically found on over-the-range or convection models. It stands for a “T1 Max Time” error, which means the microwave has failed to reach the required temperature within a specific timeframe (usually 30 minutes) during a convection or preheating cycle.

Common Causes and Solutions

• Preheating Failure: The most frequent cause is a faulty convection heating element or a malfunctioning grill heater. If these elements are burnt out or broken, the oven cannot generate enough heat to satisfy the sensor.
• Sensor Issues: A defective gas sensor or temperature sensor may be misreading the internal environment, sending an incorrect signal to the control board that the unit isn’t heating fast enough.
• Airflow Obstructions: If the internal convection fan is stuck or the vent is blocked, heat won’t circulate properly, leading to a slow rise in temperature that triggers the code.
• Electronic Glitch: Sometimes, moisture or a brief power surge can cause the control board to “freeze” or misinterpret data from the sensors.

How to Fix It

1. The Hard Reset: Unplug the microwave or shut off the circuit breaker for at least 60 seconds. This is often enough to clear a “ghost” error caused by a temporary communication lag.
2. Check for Moisture: If you have been boiling water or creating heavy steam on the stovetop below, let the microwave dry out completely before trying the convection setting again.
3. Inspect the Convection Fan: Ensure the fan can spin freely. If it’s clogged with grease or debris, it may prevent the unit from heating efficiently.
4. Professional Diagnostic: Because the E13 code often involves testing the heating elements or the main control board with a multimeter, it is recommended to contact a licensed technician if a simple reset doesn’t work.

• Pro Tip: To avoid this error, ensure your over-the-range microwave has proper clearance and that the grease filters are cleaned regularly to maintain optimal airflow.

🌡️ Solving the Samsung Microwave “E-24” Error Code

The E-24 error code (or C-21 on some models) is a safety alert indicating that the microwave is overheating. This code typically appears when the internal temperature of the unit exceeds safe operating limits, often triggered by a sensor that detects potential fire risks.

Common Causes and Troubleshooting

• Inadequate Ventilation: This is the most common cause, especially for over-the-range or built-in models. Ensure the vents are not blocked by grease, dust, or cabinetry.
• Extended Use: If you have been running the microwave for a very long period, it may simply need a break to cool down.
• Faulty Temperature Sensor: If the error appears immediately or when the microwave is cold, the thermal sensor or “thermistor” may be defective and sending a false signal to the control board.
• Circuit Board Glitch: Occasionally, a communication error between the sensor and the main board causes a “ghost” E-24 code.

How to Fix It

1. Cool Down: Immediately stop cooking, open the door, and let the unit sit for at least 30 minutes.
2. Hard Reset: Unplug the microwave or flip the circuit breaker for 60 seconds. This allows the internal computer to clear the error state once the temperature has dropped.
3. Clean the Vents: Check the grease filters and air intake vents. If they are clogged, the microwave cannot pull in enough cool air to regulate its internal temperature.
4. Professional Repair: If the code persists after the unit is cool and has been reset, the temperature sensor or control board likely needs replacement.

Safety Reminder: If you smell smoke or see sparks along with this code, keep the unit unplugged and do not attempt to use it until it has been inspected by a licensed technician.

🔢 SE Code — Keypad / Touchpad Short (5E)

The SE error code (frequently misread as “5E”) is one of the most common issues with Samsung microwaves, signaling a key-short error. This occurs when the control board detects that a button is being held down or “shorted” for more than 60 seconds. Because this error can occasionally cause a microwave to start on its own—posing a fire risk—it should be addressed immediately.

• How to Fix It
  • Touchpad Glitch: Unplug for ~60 seconds to up to 10 minutes to clear the “brain” of the control board and restart.
  • Stuck or Dirty Buttons: Gently clean the control pad (allow to dry thoroughly). Do not spray liquid directly onto the panel
  • Ribbon Cable Issues: The flexible ribbon cable connecting the keypad to the control board can become loose or corroded. Some DIYers find success by cleaning the copper connectors with a pencil eraser and rubbing alcohol.
  • Hardware Failure: If cleaning and resetting do not work, the membrane keypad or the electronic control board has likely failed and will require professional replacement.

Read: Top Reasons Why Microwave Is Not Heating

🔧 Testing Microwave Circuit Board for Continuity

Warning: Working on internal microwave components is extremely dangerous; the high-voltage capacitor can hold a lethal charge of 4,000 volts even when the unit is unplugged. While a voltmeter can be used to test a circuit board for continuity once it is removed, the complexity and risk involved make this a job for a licensed service technician. Since the capacitor is full of voltage even if unplugged, you cannot work on any of the internal components without first discharging the capacitor. 

Because identifying specific failed components on a board is difficult, the most reliable solution is a full board replacement by a professional. If you proceed with a repair, ask your technician if they offer a discount for your old board, as they can often be refurbished and resold.

Samsung Microwave Repair & Troubleshooting FAQ

Is my Samsung microwave worth repairing?

It depends on the model’s value and age. If you have a high-end or over-the-range model (which can cost up to $600), a repair is often worth it to extend its life. However, for entry-level models, replacement might be cheaper. Also, consider your kitchen layout; if you have a custom or tight space (like in a boat or specific cabinetry), repairing your current unit avoids the headache of finding a new one that fits.

How much does it cost to replace the control board?

The part itself typically ranges from $125 to $145, depending on your specific model. When you factor in professional labor, you can expect a total repair bill of approximately $200. Before paying out of pocket, check your warranty and purchase date, as the control board may still be covered.

Read: 5 Possible Issues When Microwave Turntable Is Not Turning

What are the signs that I need a new microwave?

You should consider a replacement if your unit is over 10 years old or exhibiting dangerous symptoms like:

• Unresponsive keypads or inconsistent cooking power
• Smoke, sparks, or burning smells.
• A door that no longer seals properly.
• Excessive noise during operation.

How do I reset my Samsung microwave?

Samsung microwaves do not have a dedicated reset button. To perform a reset, unplug the unit from the wall, wait a few minutes for the electrical charge to dissipate, and plug it back in. This can often clear “Error” or “Code” messages that appear on the display.

What do “Error” or “Code” messages mean?

• “Error”: Usually triggered if the door is opened too early during a cycle. A simple reset should clear it.
• “Code”: This is a safety feature that prevents the microwave from running when a fault is detected. Usually, this is accompanied by a number; if no number appears, try a hard reset (unplugging the unit).
• “Beep 7”: This is an unusual display error. Try a reset or run a test cycle: place a cup of water inside for 20 seconds, then press stop/clear to see if the system recalibrates.

Samsung Microwave Error Codes Explained (Table)