The DE81-04971A is the OEM high limit thermostat (thermal cutout) for Samsung microwaves, rated at 220°F (104°C). This safety component monitors the internal temperature of the microwave cavity and magnetron area. If the temperature exceeds the rated threshold — due to a blocked vent, failed cooling fan, or extended heavy use — the thermostat opens the circuit and cuts power to prevent damage or fire. A failed or tripped thermostat that won’t reset will cause the microwave to stop heating entirely. Replacing it with the correct OEM part restores safe, reliable operation.

✓ Model-Specific Repair Pages

We are building dedicated repair guides for the most popular Samsung microwave models compatible with this thermostat. Don’t see your model? Contact us and we’ll confirm compatibility for your specific microwave.

✓ Common Symptoms Fixed

• Microwave stops heating mid-cycle and won’t restart
• Microwave turns on but produces no heat
• Microwave shuts off after a short period of use
• Microwave trips repeatedly during extended cooking sessions
• No heat after the microwave was used heavily or vents were blocked
• Microwave appears dead — no response — after an overheating event

✓ Key Features & Specifications

• Part number: DE81-04971A
• Type: High limit thermostat / thermal cutout
• Temperature rating: 220°F (104°C)
• Compatible brand: Samsung
• Appliance type: Over-the-range and countertop microwave
• OEM part — exact factory replacement
• IMPORTANT: Microwaves store lethal high-voltage charge in the capacitor even when unplugged. Always discharge the capacitor before servicing. If you are not experienced with microwave repair, hire a qualified technician.

✓ Buying Options

OEM / New: The original Samsung-manufactured DE81-04971A high limit thermostat. Guaranteed factory specifications including the correct 220°F trip temperature. Using the correct temperature-rated thermostat is critical for safe microwave operation — do not substitute with a different rating.

✓ Replacement Part Numbers

OEM SKU: DE81-04971A

✓ Installation Tips

• Unplug the microwave and discharge the high-voltage capacitor before touching any internal components — the capacitor can hold a lethal charge even after unplugging
• Remove the outer cabinet to access the thermostat — typically located near the magnetron or on the cavity wall
• Before replacing, check whether the existing thermostat has simply tripped (some are resettable) — test with a multimeter for continuity
• If the thermostat has failed open (no continuity), replace it
• Note the wire terminal orientation before disconnecting
• Ensure the new thermostat makes firm contact with the mounting surface for accurate temperature sensing
• Investigate and resolve the root cause of overheating (blocked vents, failed fan) before returning the microwave to service

✓ Compatible Models

This thermostat is compatible with select Samsung over-the-range and countertop microwave models. Check your microwave’s model number (found on the label inside the door frame or on the back panel) or contact us to verify compatibility.

✓ Frequently Asked Questions

How do I know if my high limit thermostat has failed?
Test it with a multimeter set to continuity. A good thermostat at room temperature should show continuity (closed circuit). If it reads open (no continuity) at room temperature, it has failed and needs replacement.

Can I reset a tripped high limit thermostat?
Some high limit thermostats are one-time-use thermal fuses that cannot be reset — they must be replaced once tripped. Others are resettable bimetallic types. Test with a multimeter to determine which type you have.

Why did my thermostat fail?
Most failures are caused by restricted airflow (blocked vents or a failed cooling fan) causing the microwave to overheat. Always inspect and clear the vents and test the cooling fan before replacing the thermostat, or it may fail again.

Is it safe to repair a microwave myself?
Microwaves contain a high-voltage capacitor that can store a lethal charge even when unplugged. If you are not experienced with discharging capacitors and working with high-voltage components, hire a qualified appliance technician.

Do you ship to the United States?
Yes, we ship across Canada and the USA. Visit our shipping policy page for rates and delivery times.