Samsung Microwave E-61 Error — What It Means
The E-61 error code on Samsung microwaves indicates an open humidity sensor error. The control board is not receiving the expected signal from the humidity sensor circuit, registering it as an open or incomplete electrical path. This sensor monitors moisture levels during cooking, and when the circuit is open the microwave cannot operate normally. The fault can be a failed sensor, disconnected or damaged wiring, or occasionally a control board issue if the sensor and harness test good.
Common Causes
- Failed humidity sensor The sensor itself has failed internally and reads as an open circuit to the control board.
- Disconnected or loose wiring harness The connector between the humidity sensor and the control board has come loose, corroded, or separated.
- Damaged sensor wiring Wires in the humidity sensor circuit are broken, pinched, or melted from heat exposure.
- Moisture or steam buildup Temporary moisture inside the control area can trigger a false open sensor reading until the unit dries out.
- Control board fault The main control board incorrectly reports an open circuit even when the sensor and wiring are intact.
Step-by-Step Fix
- Unplug the microwave or turn off the circuit breaker and wait at least 60 seconds to allow the control board to reset and any moisture to settle.
- Restore power and run a brief test cycle. If the E-61 code does not return, the issue was temporary moisture or a momentary glitch.
- If the code reappears, unplug the unit again and remove the outer cabinet panels to access the humidity sensor and its wiring harness.
- Inspect the humidity sensor connector and all associated wiring for loose terminals, corrosion, heat damage, or visible breaks in the wire insulation.
- Test the humidity sensor resistance using a multimeter if you have access to the service manual specifications for your model. If the sensor reads open or far outside spec, replace it.
- Check the control board connector pins and traces for damage or burn marks if the sensor and wiring test normal, as the board may be reporting a false open condition.
- Reassemble the microwave, restore power, and verify the error does not return during a normal cook cycle.
Parts Often Needed
| Part | Notes |
|---|---|
| Humidity sensor | Amazon | Order by your Samsung microwave model number for exact fit. |
| Sensor wiring harness | Amazon | Needed if wires are cut, melted, or connector terminals are damaged beyond repair. |
| Main control board | Amazon | Replace only after confirming the sensor and all wiring test correctly. |
When to Call a Pro
If you are not comfortable discharging the high-voltage capacitor and working inside a microwave cabinet, call a qualified appliance technician. Microwaves retain lethal voltage even when unplugged. A professional has the training, discharge tools, and model-specific service data to safely diagnose the humidity sensor circuit, test components to exact specifications, and replace the sensor, harness, or control board as needed. If the error returns immediately after a power reset or you see evidence of arcing or burnt components, do not attempt further troubleshooting and schedule a service call.