De Dietrich Overheating / Temperature Regulation Failure

Dryer runs but clothes come out very hot and sometimes wrinkled or slightly scorched.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Stuck heater relay, Failed cycling thermostat stuck closed, Blocked exhaust reducing airflow, Faulty NTC temperature sensor reading low

How to Fix / Troubleshooting

Safety first: Stop using the dryer until the overheating issue is resolved to avoid fire risk. Unplug before inspection.

  • Clean airflow: Ensure lint filter, exhaust duct, and condenser (if present) are clean and unobstructed.
  • Test cycling thermostat: Access the thermostat on the heater housing or exhaust duct. Test for continuity at room temperature and compare to specifications. Replace if stuck closed or out of range.
  • Check NTC sensor: Measure the resistance of the drum or exhaust NTC sensor. Replace if readings are incorrect.
  • Control board relay: If sensors and thermostats are good, the heater relay on the main PCB may be stuck on. Board replacement is required and should be done by a technician.
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Repair Difficulty

Hard 4/5

Required Part

Cycling Thermostat
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