Bosch dryer displays E20 and may not heat or may shut down.

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.

Possible Causes

Open thermal cutoff, Failed exhaust thermostat, Overheating due to blocked airflow, Loose thermostat wiring

Safety first: Disconnect power before accessing the rear panel.

Access thermostats: Remove the rear panel to locate the exhaust thermostat and thermal cutoff mounted on the exhaust duct or heater housing.
Test for continuity: Use a multimeter to check each thermostat and cutoff. Replace any that are open.
Correct airflow issues: Clean the lint filter, exhaust duct, and internal lint passages to prevent future overheating.

After replacing safety devices, run a test cycle and monitor exhaust temperature and airflow.

Medium 3/5

Thermal Cutoff

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