Samsung Oven Error Code E-27

Samsung Oven Error Code E-27 — What It Means

The Samsung oven error code E-27 typically indicates a problem with the oven’s temperature sensing or communications related to temperature control. When the range or wall oven cannot read a valid temperature signal (or detects a short/open in the sensor circuit), the control board will display E-27 and may stop normal cooking functions. This error can occur intermittently or persistently and often leads to inconsistent baking, longer or shorter cook times, inaccurate displayed temperature, or the oven refusing to heat. In some cases a temperature-sensor fault can present a safety risk—if the oven can’t monitor or control actual temperature it could overheat or fail to shut off properly—so prompt diagnosis and repair are recommended.

Common Causes

• Faulty oven temperature sensor (NTC thermistor) — open, shorted, or out-of-spec
• Loose, damaged, or corroded wiring/connectors between sensor and main board
• Failed or failing main control board (PCB) or its sensor input circuit
• Software/firmware glitch requiring a power reset or control board reset
• Physical damage to the sensor from high heat, spill infiltration or impact
• Intermittent ground or neutral issues affecting sensor voltage reference

Troubleshooting Steps

1. Power cycle the oven: turn off power at the breaker for 60 seconds, then restore power. Watch if E-27 returns — this can clear transient faults.
2. Inspect the sensor and wiring visually: remove the oven racks and check for obvious damage, loose connectors, burn marks, or melted insulation around the sensor wiring.
3. Safely disconnect power, then test the sensor with a multimeter for continuity and resistance. If it is open or shorted, or far outside the expected range, the sensor should be replaced. Refer to the service manual for the correct resistance range for your model.
4. Check connectors at the main control board for corrosion or loose pins. Reseat any multi-pin connectors and ensure a firm connection.
5. If the sensor and wiring measure OK, try swapping the sensor harness connection (if another identical plug is available) or inspect the control board for visible damage or burnt components.
6. Look for error history/reset options in the oven’s user menu; on some models you can run a diagnostics mode that returns specific sensor or board fault codes.
7. Replace the temperature sensor first if it fails testing — it’s a common and relatively inexpensive fix. After replacement, power on and verify normal operation and accurate temperature control.
8. If a new sensor does not fix the error, the main control board may be defective. At that point consider professional diagnosis because board replacement and firmware calibration can be complex.
9. For gas ovens: if you suspect the problem ties into ignition or gas control, stop using the appliance and consult a qualified technician immediately—safety is paramount.

Maintenance / Prevention Tips

• Keep the oven interior clean and avoid spills that can reach the sensor or wiring.
• Avoid slamming the oven door or placing heavy items that can impact the sensor probe.
• Periodically check the sensor wiring and connector for corrosion or chafing.
• Use oven-safe pans and avoid direct contact between oversized pans and the sensor probe area.
• Inspect and replace worn door gaskets to ensure proper temperature stability and reduce stress on components.
• Perform a soft power reset after storms or brownouts to clear transient errors.
• Follow the manufacturer’s recommended cleaning methods; harsh chemicals can damage wiring insulation and sensors.
• Have the oven serviced periodically by a qualified technician to test electrical connections and safety systems.
• Don’t attempt repairs without disconnecting power; always isolate the circuit first.
• If you live in a humid or coastal area, inspect electrical connections more frequently for corrosion.
• Use the oven within recommended temperature ranges; repeated extreme baking at maximum temps can stress sensors.
• Replace OEM parts with manufacturer-approved components to ensure compatibility.
• Keep manuals and wiring diagrams for your model handy for reference during troubleshooting.
• Note error patterns (time of occurrence, after particular cycles) to help technicians diagnose intermittent faults.
• Have surge protection on your kitchen circuits to help protect sensitive electronics on the control board.

FAQs

Q: Can I keep using the oven when E-27 appears?

A: It depends. If the oven still heats but displays E-27, you risk inaccurate temperatures and inconsistent cooking. If the oven won’t heat or the error is persistent, stop using it until the issue is diagnosed—especially for gas ovens. Safety first.

Q: How much does it cost to fix an E-27 error?

A: Costs vary. Replacing a temperature sensor is typically low to moderate (parts are usually inexpensive, plus labor). If the main control board needs replacement, costs are higher due to the price of the PCB and labor. Get a diagnostic quote from an authorized technician for an accurate estimate.

Q: Is E-27 covered under warranty?

A: It depends on your appliance warranty. If the oven is still under the manufacturer’s warranty and the fault is due to a defective part, Samsung or the retailer may cover repairs. Keep proof of purchase and check your warranty terms.

Q: Can I replace the sensor myself?

A: If you are comfortable working safely with appliance power isolated and can access the sensor, replacing it is often a straightforward DIY job. Follow model-specific instructions and disconnect power first. If unsure, contact a professional.

Conclusion / Safety Notice

Errors that affect temperature sensing should be treated seriously. If you are comfortable with basic electrical diagnosis (power isolation, connector checks, and multimeter tests), start by testing the sensor and wiring. However, if the fault persists after replacing the sensor, if you find damaged wiring, or if the main control board appears compromised, call a certified appliance technician. For gas ovens or any sign of burning, smell of gas, or unsafe conditions, stop using the appliance immediately and get professional help.

For reliable repairs and to protect your warranty and safety, contact an authorized Samsung service center or a licensed appliance repair professional when in doubt.