If your Samsung AI washer dryer combo displays a TC7 error code, it indicates a problem with the Evaporator In temperature sensor. This sensor monitors the internal temperature to ensure proper drying performance. When it malfunctions, the machine may stop mid-cycle or display error codes such as TC5, TC7, TC8, TCA, TCD, or TCF.
Symptoms
- TC* error code displayed (TC5, TC7, TC8, TCA, TCD, TCF).
- Dryer not heating or drying properly.
- The unit stops or pauses unexpectedly during drying.
What the Samsung Washer Dryer Combo TC7 Error Mean*
These error codes occur when:
- The sensor’s data value exceeds the designated upper limit.
- The sensor’s data value does not reach the lower limit.
- The measured temperature is outside the sensor’s normal range.
Related Parts
- Temperature sensor (Evaporator In).
- Main PBA (Main PCB board).
- Wire harness connecting the components.
Possible Causes
- Faulty or damaged temperature sensor.
- Loose or poor wire connections, or the sensor not seated correctly.
- Main PCB failure affecting sensor signal processing.
- Freezing temperatures causing the sensor to malfunction.
- Damaged components, including the wire harness or PBA.
Troubleshooting Steps
- Inspect all wire connections between the sensor and the PCB.
- Check sensor placement — ensure it’s firmly attached and positioned correctly.
- Examine related parts for visible damage or incorrect assembly.
- Measure sensor resistance using a multimeter.
- Sensor: Assy Thermistor IN (DB95-05011D)
- Expected resistance: 10 kΩ ±3% at 25 °C (77 °F)
- Acceptable range: 9.7 kΩ – 10.3 kΩ at room temperature
If the resistance reading is outside this range, replace the sensor.
💡 Note: If the resistance value is within spec but the error persists, test the dryer operation or check for noise interference or PCB issues.
Environmental Factors
This error may also appear due to:
- Electrical noise causing temporary false readings.
- Extreme cold (below –20 °C / –4 °F) at the installation site.
Sensor Specifications
- Sensing range: –20 °C to 100 °C (–4 °F – 212 °F)
- Resistance specification: 10 kΩ ± 3% @ 25 °C (77 °F)
Conclusion
A TC7 error on a Samsung AI Combo Washer Dryer typically points to a temperature sensing issue. By checking the wiring, resistance, and environmental conditions, you can often identify whether the sensor or main control board is at fault.
If replacement parts are needed, ensure you use OEM components for reliable performance and longevity.
I am a master Appliance Repair technician with over 35 years of experience in the field. I am passionate about helping people troubleshoot their appliances and fix common problems. My website, appliancemode.com, provides a wealth of information on troubleshooting common appliance issues and deciphering error codes. This website aims to empower people to tackle appliance repairs themselves and save money on service calls.
